Covering sheet cutting device

Abstract

This utility model relates to a sheet metal cutting device for can lid making, including an upper cutting die and a lower cutting die arranged opposite to each other. The upper cutting die includes a liftable upper die base plate, and a wave-shaped cutting upper die is arranged at the bottom of the upper die base plate, which is longitudinally oriented. The lower cutting die includes a fixed lower die base plate, and a wave-shaped cutting lower die is arranged at the top of the lower die base plate, which is longitudinally oriented and adapted to fit with the wave-shaped cutting upper die. During operation, the rectangular sheet metal to be cut is conveyed from left to right between the upper and lower cutting dies. The upper die base plate drives the wave-shaped cutting upper die to move downward. Through the cooperation of the wave-shaped cutting upper die and the wave-shaped cutting lower die, the sheet metal is wave-shaped, so that the end of the sheet metal is wavy. This can effectively reduce the material waste of sheet metal when punching out the can lid blank in the later stage and reduce production loss.

Description

Technical Field

[0001] This utility model relates to a device for cutting sheet metal for making lids. Background Technology

[0002] During the can lid forming process, the entire roll of sheet metal needs to be cut using a flat cutter. The resulting sheet metal blocks are then fed into a punch press to cut out the can lid blanks. To conserve material, each sheet metal block is typically stamped in a staggered arrangement, such as... Figure 1 As shown. However, when the sheet metal is cut into blocks, a flat cutter is used, resulting in straight ends. When using staggered arrangement of the can lid blanks, this leads to significant material waste at both ends of the sheet metal. Therefore, it is necessary to improve this technical problem. Utility Model Content

[0003] This utility model addresses the problems existing in the prior art by providing a device for cutting sheet metal for making lids.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a sheet metal cutting device for making covers, comprising an upper cutting die and a lower cutting die arranged opposite to each other, wherein the upper cutting die includes a liftable upper die base plate, and a wave-shaped cutting upper die is provided at the bottom of the upper die base plate, the wave-shaped cutting upper die being arranged longitudinally; the lower cutting die includes a fixed lower die base plate, and a wave-shaped cutting lower die is provided at the top of the lower die base plate for adapting to the wave-shaped cutting upper die.

[0005] Furthermore, the peaks and troughs of the waveform trimming upper and lower molds are both trapezoidal in shape.

[0006] Furthermore, the lower mold base plate is provided with a liftable unloading plate.

[0007] Furthermore, a sheet metal conveying mechanism is provided on the left side between the upper and lower cutting dies, which conveys the sheet metal from left to right between the upper and lower cutting dies.

[0008] Furthermore, the sheet metal conveying mechanism includes multiple sheet metal conveying rollers that are evenly spaced laterally, and the sheet metal conveying rollers are arranged longitudinally.

[0009] Furthermore, a top limiting assembly is provided above the multiple sheet metal conveying rollers. The top limiting assembly includes a pair of transverse support frames distributed in front and behind. Each transverse support frame has multiple pressure rollers evenly distributed in the transverse direction installed at its lower end. The pressure rollers roll in cooperation with the top of the sheet metal.

[0010] Furthermore, the top limiting assembly is symmetrically provided with side limiting assemblies on the front and rear sides. Each side limiting assembly includes a pair of guide limiting wheels distributed on the left and right. The axis of the guide limiting wheels is arranged vertically, and the peripheral side of the guide limiting wheels is used to contact the side of the sheet metal. The top limiting assembly and the side limiting assemblies on the front and rear sides are used to limit the sheet metal in the front and rear.

[0011] Furthermore, the guide wheel has an annular groove on its circumferential side, which facilitates the insertion of the side of the sheet metal.

[0012] Furthermore, a longitudinal connecting rod is fixed between the middle of the top surfaces of a pair of transverse support frames.

[0013] Furthermore, it also includes a worktable, with the lower mold base plate fixedly installed on the top of the worktable.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention is reasonably designed and can cut the end of the iron sheet into a wavy shape, which can effectively reduce the material waste of the iron sheet when punching out the rough blank of the can lid and reduce production loss. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the traditional sheet metal stamping process to produce the rough blank of the can lid;

[0016] Figure 2 This is a schematic diagram of the state of the iron sheet after cutting in an embodiment of this utility model;

[0017] Figure 3 yes Figure 2 A schematic diagram of the structure of the rough blank for the can lid cut by punching;

[0018] Figure 4 This is a schematic diagram of the main structure of an embodiment of this utility model;

[0019] Figure 5 This is a top view of an embodiment of the present invention.

[0020] Figure 6 yes Figure 5 A diagram illustrating the usage status;

[0021] Figure 7 This is a bottom view schematic diagram of the upper cutting mold in an embodiment of this utility model;

[0022] Figure 8 This is a top view schematic diagram of the cutting lower mold in an embodiment of this utility model.

[0023] In the picture:

[0024] 1-Upper cutting die; 2-Lower cutting die; 3-Upper die base plate; 4-Wave pattern cutting upper die; 5-Lower die base plate; 6-Wave pattern cutting lower die; 7-Sheet metal; 8-Unloading plate; 9-Sheet metal conveying mechanism; 10-Sheet metal conveying roller; 11-Transverse support frame; 12-Pressure roller; 13-Guide limiting roller; 14-Annular groove; 15-Longitudinal connecting rod; 16-Workbench; 17-Hole after stamping out the can lid blank; 18-Wave pattern cutting section. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figures 2-8 As shown, this utility model discloses a sheet metal cutting device for making covers, comprising an upper cutting die 1 and a lower cutting die 2 arranged opposite to each other. The upper cutting die 1 includes a liftable upper die base plate 3, and a wave-shaped cutting upper die 4 is arranged at the bottom of the upper die base plate 3, the wave-shaped cutting upper die 4 being arranged longitudinally. The lower cutting die 2 includes a fixed lower die base plate 5, and a wave-shaped cutting lower die 6 is arranged at the top of the lower die base plate 5, the wave-shaped cutting lower die 6 being arranged longitudinally and used to adapt to the wave-shaped cutting upper die 4. During operation, the rectangular sheet metal 7 to be cut is conveyed from left to right between the upper cutting die 1 and the lower cutting die 2. The upper die base plate 3 drives the wave-shaped cutting upper die 4 to move downward. Through the cooperation of the wave-shaped cutting upper die 4 and the wave-shaped cutting lower die 6, the sheet metal is wave-shaped, so that the end of the sheet metal is wavy. Figure 2 As shown, this effectively reduces material waste of sheet metal during the subsequent punching of the can lid blank, thus reducing production losses.

[0028] In this embodiment, the upper mold base plate can be driven to rise and fall by a hydraulic cylinder vertically positioned above it.

[0029] In this embodiment, the peaks and troughs of the waveform cutting upper die 4 and the waveform cutting lower die 6 are both trapezoidal in shape, that is, the ends of the sheet metal after cutting are in a continuous concave-convex form, and both the concave and convex positions are trapezoidal in shape.

[0030] In this embodiment, the lower mold base plate 5 is provided with a liftable unloading plate 8. After cutting, the cut sheet metal is lifted upward by the lifting of the unloading plate to avoid leaving it on the lower mold of the wave cutting.

[0031] In this embodiment, a sheet metal conveying mechanism 9 is provided on the left side between the upper cutting die 1 and the lower cutting die 2. The sheet metal conveying mechanism 9 conveys the sheet metal 7 from left to right between the upper cutting die 1 and the lower cutting die 2. Specifically, the sheet metal conveying mechanism 9 includes multiple sheet metal conveying rollers 10 evenly spaced laterally. The sheet metal conveying rollers 10 are arranged longitudinally, and the multiple sheet metal conveying rollers are driven to rotate by a motor and a chain assembly. Preferably, the sheet metal conveying rollers 10 include a longitudinally arranged roller shaft, and a number of evenly spaced rollers are installed axially on the outer surface of the roller shaft. The outer circumferential surface of the rollers is used to contact the bottom surface of the sheet metal.

[0032] In this embodiment, a top limiting component is provided above the multiple sheet metal conveying rollers 10. The top limiting component limits the sheet metal 7 from above, preventing the front and rear ends from tilting upwards during conveying. Specifically, the top limiting component includes a pair of transverse support frames 11 distributed front and rear. Each transverse support frame 11 has multiple pressure rollers 12 evenly distributed laterally at its lower end. The axis of the pressure rollers extends in the front and rear direction, and the pressure rollers 12 roll in contact with the top of the sheet metal 7. By providing pressure rollers at the lower ends of the transverse support frames distributed front and rear, and by having the pressure rollers contact the top surfaces of the front and rear ends of the sheet metal and form a rolling contact, the front and rear ends of the sheet metal are effectively prevented from tilting upwards when conveyed from left to right, ensuring that the sheet metal is fed into the cutting upper and lower cutting dies in a straight state.

[0033] In this embodiment, side limiting components are symmetrically arranged on the front and rear sides of the top limiting component. The side limiting components include a pair of left and right distributed guide limiting wheels 13. Each limiting wheel is located between two adjacent sheet metal conveying rollers. The axis of the guide limiting wheel 13 is arranged vertically. The peripheral side of the guide limiting wheel 13 is used to contact the side of the sheet metal. The side limiting components on the front and rear sides of the top limiting component are used to limit the sheet metal 7 in the front and rear, so as to avoid the sheet metal from deviating in the front and rear when it is conveyed from left to right.

[0034] In this embodiment, the guide limiting wheel 13 has an annular groove 14 on its circumferential side, which facilitates the side of the sheet metal 7 to extend into it.

[0035] In this embodiment, a longitudinal connecting rod 15 is fixed between the middle of the top surfaces of a pair of transverse support frames 11. In another embodiment, the longitudinal connecting rod can be driven to rise and fall by a lifting cylinder vertically mounted above it. The longitudinal connecting rod drives the pressure roller to rise and fall through a pair of transverse support frames, so as to adjust the degree of pressure on the sheet metal and facilitate the conveying and limiting of sheet metal of different thicknesses.

[0036] In this embodiment, a workbench 16 is also included, and the lower mold base plate 5 is fixedly installed on the top of the workbench 16.

[0037] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0038] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0039] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A cover sheet iron cutting device, comprising an upper cutting die and a lower cutting die arranged oppositely, characterized in that: The upper cutting die includes a liftable upper die base plate, and a waveform cutting upper die is provided at the bottom of the upper die base plate. The waveform cutting upper die is arranged longitudinally. The lower cutting die includes a fixed lower die base plate, and a waveform cutting lower die is provided at the top of the lower die base plate for matching the waveform cutting upper die.

2. The cover sheet cutting apparatus according to claim 1, wherein: The peaks and troughs of the waveform trimming upper and lower molds are both trapezoidal in shape.

3. The cover sheet cutting apparatus according to claim 1, wherein: The lower mold base plate is equipped with a liftable unloading plate.

4. The cover sheet cutting apparatus according to claim 1, wherein: A sheet metal conveying mechanism is provided on the left side between the upper and lower cutting dies. The sheet metal conveying mechanism conveys the sheet metal from left to right between the upper and lower cutting dies.

5. The cap sheet cutting apparatus according to claim 4, wherein: The sheet metal conveying mechanism includes multiple sheet metal conveying rollers that are evenly spaced laterally, and the sheet metal conveying rollers are arranged longitudinally.

6. The cap sheet cutting apparatus according to claim 5, wherein: A top limiting assembly is provided above multiple sheet metal conveying rollers. The top limiting assembly includes a pair of transverse support frames distributed in front and behind. Each transverse support frame has multiple pressure rollers evenly distributed in the transverse direction installed at its lower end. The pressure rollers roll in cooperation with the top of the sheet metal.

7. The cap stock cutting apparatus of claim 6, wherein: The top limiting component has symmetrically arranged side limiting components on its front and rear sides. Each side limiting component includes a pair of guide limiting wheels distributed on the left and right. The axis of the guide limiting wheels is arranged vertically, and the circumferential side of the guide limiting wheels is used to contact the side of the sheet metal. The top limiting component and the side limiting components on the front and rear sides are used to limit the sheet metal in the front and rear.

8. The cap stock cutting apparatus of claim 7, wherein: The guide wheel has an annular groove on its circumference, which facilitates the insertion of the side of the sheet metal.

9. The cap sheet cutting apparatus according to claim 6, wherein: A longitudinal connecting rod is fixed between the middle of the top surfaces of a pair of transverse support frames.

10. The cap sheet cutting apparatus according to claim 1, characterized by: It also includes a worktable, with the lower mold base plate fixedly installed on the top of the worktable.

Images