Hemming device for skirt edge of pot blank

Abstract

The utility model belongs to the technical field of hemming of pot blank skirts, and discloses a hemming device of a pot blank skirt, the bottom of a hydraulic cylinder I is fixed on a fixing plate, and a placing disc is used for fixedly placing a pot blank; the guide mechanism is fixedly arranged in the center of the upper part of the bracket; the supporting columns are vertically fixed to the four corners of the upper portion of the support respectively. Outer threads are formed in the upper ends of the supporting columns. The upper part and the lower part of the supporting plate are screwed and fixed by two fixing nuts; the stamping and curling mechanism is fixedly arranged in the center of the upper part of the supporting plate and is used for curling the skirt edge of the upper part of the pot blank; the pot blank is placed in the upper center of the placing disc. The utility model has the benefits as follows: the problem of radial run-out of high-speed rotation during the hemming operation of the pot blank in the prior art is thoroughly solved, the precision of the hemming operation of the pot blank is improved, and the working efficiency of the hemming operation of the pot blank is improved at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of pot blank skirt curling, and particularly relates to a pot blank skirt curling device. Background Art

[0002] The pot blank forming process involves placing a circular sheet on the press platform, aligning the die with the center of the sheet, and then using a hydraulic cylinder to push the die into the circular sheet, forming a cylindrical shape with an open top and a closed bottom. This forms the semi-finished pot blank. This semi-finished pot blank has a raised skirt at the opening. Further processing of the semi-finished pot blank requires curling the skirt to create a smooth edge.

[0003] In the prior art, the pot blank skirt is typically crimped by placing the pot blank on a rotating platform. As the pot blank rotates at high speed, a circular roller or a smooth spherical crimping member contacts the edge of the pot blank skirt. Simultaneously, a lifting mechanism is used to elevate the roller or spherical crimping member, thereby completing the crimping process on the semi-finished pot blank. The main technical issues with this process for crimping the pot blank skirt are that, because the crimping process requires the rotation of the pot blank itself and the coordination of the contact distance and height of the circular roller or spherical crimping member, radial runout occurs during rotation, directly reducing the accuracy of the crimping process. Furthermore, the entire crimping process takes a long time, resulting in low efficiency. Based on the aforementioned technical shortcomings of the prior art, the inventors have developed a pot blank skirt crimping device that effectively addresses these technical issues. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a curling device for the skirt of a pot blank, which has a simple structure and a scientific and reasonable design. The utility model can solve the problem of the accuracy of the curling operation of the pot blank skirt, and at the same time solves the problem that the entire curling operation process takes a long time, resulting in low efficiency of the curling operation of the entire pot blank skirt.

[0005] The technical solution adopted by the present invention is: a hemming device for the skirt of a pot blank, comprising a bracket 1, an intermediate frame 2, and a supporting square steel 3. The bracket 1 is a rectangular parallelepiped frame welded from square steels. The intermediate frame 2 is fixedly arranged at the upper middle position of the bracket 3. The supporting square steels 3 are combined into a T-shape and welded to the upper part of the intermediate frame 2; a fixing plate 4 is fixed to the upper right position of the supporting square steel 3, and the fixing plate 4 is used to fix a hydraulic cylinder 5; the bottom of the hydraulic cylinder 5 is fixed on the fixing plate 4, and the telescopic rod of the hydraulic cylinder 5 passes through the upper part of the bracket 1 and is fixed to the bottom center of the placement plate 6, and the placement plate 6 is used to fix and place the pot blank 12; a guide mechanism 7 It is fixedly arranged at the upper center position of the bracket 1, and the guide mechanism 7 cooperates with the telescopic rod of the hydraulic cylinder 5 to guide the lifting and lowering of the placement plate 6; four support columns 8 are provided, and the support columns 8 are vertically fixed at the four corners of the upper part of the bracket 1, and the upper ends of the support columns 8 are provided with external threads; the support plate 10 passes through the upper part of the support column 8, and the upper and lower parts of the support plate 10 are tightened and fixed with two fixing nuts 9; the stamping and curling mechanism 11 is fixedly arranged at the upper center position of the support plate 10, and the stamping and curling mechanism 11 is used to curl the upper skirt of the pot blank 12; the pot blank 12 is placed at the upper center of the placement plate 6.

[0006] The placing plate 6 includes a placing plate body 61, which is circular. A groove 62 for fixing and limiting the pot blank 12 is opened on the upper part of the placing plate body 61. The diameter of the groove 62 is larger than the outer diameter of the bottom of the pot blank 12. The groove 62 is precisely fixed and limited with the pot blank 12.

[0007] The guide mechanism 7 includes a guide ring 71, which is ring-shaped. Four guide protrusions 72 are cross-symmetrically arranged on the circumferential outer side of the guide ring 71, and a guide hole 73 is opened at the center position of the guide protrusion 72; a guide column 74 is cross-symmetrically fixedly arranged on the upper part of the bracket 1, the guide column 74 passes through the guide hole 73 of the guide ring 71, and a limit plate 75 is fixedly arranged on the upper part of the guide column 74; four connecting columns 76 are provided, and the connecting columns 76 are cross-symmetrically fixedly arranged on the inner wall of the guide ring 71, and the connecting columns 76 and the guide holes 73 are radially corresponding.

[0008] The guide hole 73 on the guide ring 71 can slide up and down along the guide post 74 ; the diameter of the limiting plate 75 is larger than the diameter of the guide post 74 .

[0009] The placement plate body 61 is disposed at the center of the guide ring 71 , and the outer side wall of the placement plate body 61 is fixedly connected to the inner side end of the connecting column 76 of the guide ring 71 .

[0010] The fixing nut 9 is engaged and installed on the upper part of the support column 8. Two fixing nuts 9 are provided on each support column 8, one is provided on the upper position of the support plate 10, and the other is provided on the lower position of the support plate 10.

[0011] The stamping and curling mechanism 11 includes a second hydraulic cylinder 111, which is vertically fixed at the upper center position of the fixed square plate 112. Four columns 113 are provided, and the columns 113 are respectively fixed at the four corners of the bottom of the fixed square plate 112. The telescopic rod 114 of the second hydraulic cylinder 111 passes through the bottom of the support plate 10, and the connecting head 115 is fixed at the bottom center of the telescopic rod 114. The lower end surface of the connecting head 115 is provided with an external thread; an internal threaded hole is provided at the upper center of the fixed boss 116, and the internal threaded hole on the upper part of the fixed boss 116 is tightened and fixedly installed with the lower end of the connecting head 115; a stamping die 117 is fixed at the bottom position of the fixed boss 116, and the stamping die 117 is a hollow frustum with a closed upper part and an open lower part.

[0012] The bottom of the pot blank 12 is placed in the groove 62 on the upper part of the placing plate body 61; the diameter of the lower opening of the stamping die 117 is larger than the diameter of the upper skirt of the pot blank 12.

[0013] The hydraulic cylinder 1 5 and the hydraulic cylinder 2 111 are fixedly connected to the proportional distribution valve of the hydraulic station through a high-pressure oil pipe. The proportional distribution valve is used to synchronously provide hydraulic oil for the extension and contraction actions to the hydraulic cylinder 1 5 and the hydraulic cylinder 2 111.

[0014] The operation process of the curling device of the pot blank skirt is as follows: first, the bottom of the pot blank 12 is placed in the groove 62 on the upper part of the placing plate body 61, and the hydraulic station and the proportional distribution valve are turned on at the same time; then the operator starts the control switches of hydraulic cylinder 15 and hydraulic cylinder 2 111, and distributes the same proportion of hydraulic oil to hydraulic cylinder 15 and hydraulic cylinder 2 111 through the proportional distribution valve of the hydraulic station, and the telescopic rod of hydraulic cylinder 15 begins to extend, pushing the placing plate body 61 of the placing plate 6 and the guide ring 71 of the guide mechanism 7 to move upward. In the process of moving upward, the telescopic rod of hydraulic cylinder 15 passes through the upper center of the bracket 1, and the guide block 72 on the circumferential outer wall of the guide ring 71 moves upward. The punching die 117 moves upward toward the hole 73 along the guide column 74. At the same time, the hydraulic cylinder 2 111 of the stamping and curling mechanism 11 extends the telescopic rod of the hydraulic cylinder 2 111 at the same speed. The telescopic rod of the hydraulic cylinder 2 111 passes through the support plate 10, pushing the fixed boss 116 and the punching die 117 to move downward. When the lower end opening of the punching die 117 contacts the upper skirt of the pot blank 12, the punching die 117 is sleeved on the upper part of the pot blank 12. As the placing plate body 61 and the punching die 117 continue to move synchronously relative to each other, the upper skirt of the pot blank 12 is curled by utilizing the structure of the gradually decreasing cone-shaped diameter of the punching die 117, forming a smooth edge of the upper opening of the pot blank 12.

[0015] The beneficial effects of the present invention are as follows: through the arrangement of the hydraulic cylinder, the placement plate, the guide mechanism and the stamping and curling mechanism, the radial runout of the pot blank during the high-speed rotation of the curling operation in the prior art is completely solved, the accuracy of the curling operation of the pot blank is improved, and the work efficiency of the curling operation of the pot blank is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a structural diagram of the support, hydraulic lifting mechanism, and guide mechanism of the utility model;

[0018] Figure 3 It is a cross-sectional view of the punching die of the utility model;

[0019] Markings in the figure: 1. bracket, 2. middle frame, 3. supporting square steel, 4. fixed plate, 5. hydraulic cylinder 1, 6. placement plate, 61. placement plate body, 62. groove, 7. guide mechanism, 71. guide ring, 72. guide protrusion, 73. guide hole, 74. guide column, 75. limit plate, 76. connecting column, 8. support column, 9. fixing nut, 10. support plate, 11. stamping and curling mechanism, 111. hydraulic cylinder 2, 112. fixed square plate, 113. column, 114. telescopic rod, 115. connector, 116. fixed boss, 117. stamping die, 12. pot blank. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0021] The utility model provides a curling device for the skirt of a pot blank:

[0022] like Figure 1 or Figure 2 As shown, the bracket 1 is a rectangular parallelepiped frame welded from square steel. The intermediate frame 2 is fixedly mounted in the upper center of the bracket 3. The supporting square steels 3 are assembled into a T-shape and welded to the upper portion of the intermediate frame 2. A fixing plate 4 is fixed to the upper right side of the supporting square steels 3 and is used to secure hydraulic cylinder 1 5. This arrangement of the bracket 1 provides stable support for hydraulic cylinder 1 5, the placement plate 6, the guide mechanism 7, the support columns 8, the support plate 10, and the stamping and crimping mechanism 11. The intermediate frame 2 and the supporting square steels 3 provide space for the fixing plate 4 to be fixedly mounted.

[0023] like Figure 1 or Figure 2As shown, the bottom of the hydraulic cylinder 5 is fixed to the fixed plate 4, and the telescopic rod of the hydraulic cylinder 5 passes through the upper part of the bracket 1 and is fixed to the bottom center of the placement plate 6. The placement plate 6 is used to fix and place the pot blank 12. Through the above arrangement of the hydraulic cylinder 5, the telescopic action of the hydraulic cylinder 5 telescopic rod is used to achieve the up and down movement of the placement plate 6.

[0024] like Figure 1 As shown in FIG. 2 , the placement tray 6 is used to securely place the pot blank 12. The placement tray 6 includes a placement tray body 61. The placement tray body 61 is circular, and a groove 62 is provided on the upper portion of the placement tray body 61 for securing and limiting the pot blank 12. The diameter of the groove 62 is greater than the outer diameter of the bottom of the pot blank 12, and the groove 62 precisely and securely fits the pot blank 12. By providing the groove 62 on the upper portion of the placement tray body 61 and utilizing the tight fit between the groove 62 and the bottom of the pot blank 12, the pot blank 12 is securely placed, and the pot blank 12 is secured, thereby ensuring that the pot blank 12 always remains concentric with the stamping die 117 of the stamping and curling mechanism 11.

[0025] like Figure 1 、 2 As shown, the guide mechanism 7 is fixedly arranged at the upper center position of the bracket 1, and the guide mechanism 7 cooperates with the telescopic rod of the hydraulic cylinder 5 to guide the lifting and lowering of the placement plate 6; the guide mechanism 7 includes a guide ring 71, which is a ring shape, and four guide protrusions 72 are cross-symmetrically arranged on the circumferential outer side of the guide ring 71, and the guide hole 73 is opened at the center position of the guide protrusion 72; the guide column 74 is cross-symmetrically fixedly arranged on the upper part of the bracket 1, the guide column 74 passes through the guide hole 73 of the guide ring 71, and the limit plate 75 is fixedly arranged on the upper part of the guide column 74; four connecting columns 76 are provided, and the connecting columns 76 are cross-symmetrically fixedly arranged on the inner wall of the guide ring 71, and the connecting columns 76 are radially corresponding to the guide holes 73.

[0026] By arranging the guide ring 71, guide protrusion 72, guide hole 73, guide column 74, limit plate 75 and connecting column 76 of the above-mentioned guide striking mechanism 7, in cooperation with the telescopic action of the hydraulic cylinder 5, the pot blank 12 on the upper part of the placement plate 6 can, on the one hand, always maintain the vertical movement upward or downward during the lifting process; on the other hand, the arrangement of the limit plate 75 can prevent the guide ring 71 from falling off due to excessive extension of the telescopic rod of the hydraulic cylinder 5.

[0027] The size of the placement tray 6 can be manufactured according to the specific size of the pot blank 12, and the placement tray 6 can only adapt to a specific pot blank size.

[0028] like Figure 1As shown, four support columns 8 are provided, each of which is vertically fixed at the four corners of the upper portion of the bracket 1. The upper ends of the support columns 8 are provided with external threads. A support plate 10 passes through the upper portion of the support columns 8 and is secured with two fixing nuts 9 at the upper and lower portions of the support plate 10. By configuring the support columns 8, support plates 10, and fixing nuts 9, and adjusting the positions of the upper and lower fixing nuts 9 of the support plate 10, the height of the support plate 10 relative to the upper portion of the bracket 1 can be adjusted. This, on the one hand, provides more space for placing pot blanks 12 of different heights; on the other hand, it provides a platform for the fixed installation of the stamping and crimping mechanism 11.

[0029] like Figure 1 and 3 As shown, the stamping and curling mechanism 11 includes a hydraulic cylinder 111, which is vertically fixed at the upper center of the fixed square plate 112. Four columns 113 are provided, and the columns 113 are respectively fixed at the four corners of the bottom of the fixed square plate 112. The telescopic rod 114 of the hydraulic cylinder 111 passes through the bottom of the support plate 10, and the connecting head 115 is fixed at the bottom center of the telescopic rod 114. The lower end surface of the connecting head 115 is provided with an external thread; an internal threaded hole is provided at the upper center of the fixed boss 116, and the internal threaded hole on the upper part of the fixed boss 116 is tightened and fixed with the lower end of the connecting head 115; a stamping die 117 is fixed at the bottom position of the fixed boss 116, and the stamping die 117 is a hollow cone with a closed upper part and an open lower part.

[0030] The telescopic rod 114 of the hydraulic cylinder 2 111 passes through the bottom of the support plate 10. Under the push of the telescopic rod of the hydraulic cylinder 2 111, the fixed boss 116 and the stamping die 117 are moved downward. By utilizing the structure in which the inner cavity diameter of the stamping die 117 gradually becomes smaller, and with the cooperation of the telescopic rod of the hydraulic cylinder 1 5 pushing the placement plate 6 upward, the upper skirt of the pot blank 12 can be curled.

[0031] The diameter of the inner cavity of the above-mentioned stamping die 117 can be designed and manufactured according to the specific size of the pot blank 12. The stamping die 117 can only adapt to the pot blank 12 of a specific size.

[0032] like Figure 1-3As shown, the operation process of the curling device for the skirt of the pot blank is as follows: first, the bottom of the pot blank 12 is placed in the groove 62 on the upper part of the placing plate body 61, and the hydraulic station and the proportional distribution valve are turned on at the same time; then the operator starts the control switches of the hydraulic cylinder 15 and the hydraulic cylinder 2 111, and distributes the same proportion of hydraulic oil to the hydraulic cylinder 15 and the hydraulic cylinder 2 111 through the proportional distribution valve of the hydraulic station, and the telescopic rod of the hydraulic cylinder 15 begins to extend, pushing the placing plate body 61 of the placing plate 6 and the guide ring 71 of the guide mechanism 7 to move upward. During the upward movement, the telescopic rod of the hydraulic cylinder 15 passes through the upper center of the bracket 1, and the guide ring 71 is moved on the guide block 72 on the outer wall of the guide ring 71. The guide hole 73 moves upward along the guide column 74. At the same time, the hydraulic cylinder 2 111 of the stamping and curling mechanism 11 extends the telescopic rod of the hydraulic cylinder 2 111 at the same speed. The telescopic rod of the hydraulic cylinder 2 111 passes through the support plate 10, pushing the fixed boss 116 and the stamping die 117 to move downward. When the lower end opening of the stamping die 117 contacts the upper skirt of the pot blank 12, the stamping die 117 is sleeved on the upper part of the pot blank 12. As the placing plate body 61 and the stamping die 117 continue to move synchronously relative to each other, the upper skirt of the pot blank 12 is curled by utilizing the structure of the gradually decreasing cone-shaped diameter of the stamping die 117, forming a smooth edge of the upper opening of the pot blank 12.

[0033] Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be construed in the widest manner consistent with the principles and novel features disclosed herein.

Claims

1. A device for curling the skirt of a pot blank, comprising a bracket, an intermediate frame, and supporting square steels, wherein the bracket is a rectangular parallelepiped frame welded from square steels, the intermediate frame is fixedly disposed in the middle of the upper portion of the bracket, and the supporting square steels are assembled into a T-shape and welded to the upper portion of the intermediate frame; characterized in that: The fixing plate is fixed to the upper right position of the supporting square steel, and the fixing plate is used to fix the hydraulic cylinder 1; the bottom of the hydraulic cylinder 1 is fixed to the fixing plate, and the telescopic rod of the hydraulic cylinder passes through the upper part of the bracket and is fixed to the bottom center of the placing plate, and the placing plate is used to fix the pot blank; the guide mechanism is fixedly provided at the upper center position of the bracket, and the guide mechanism cooperates with the telescopic rod of the hydraulic cylinder 1 to guide the lifting and lowering of the placing plate; four support columns are provided, and the support columns are vertically fixed at the four corners of the upper part of the bracket, and the upper ends of the support columns are provided with external threads; the support plate passes through the upper part of the support column, and the upper and lower parts of the support plate are tightened and fixed with two fixing nuts; the stamping and curling mechanism is fixedly provided at the upper center position of the support plate, and the stamping and curling mechanism is used to curl the upper skirt of the pot blank; the pot blank is placed at the upper center of the placing plate.

2. The curling device for a pot skirt according to claim 1, characterized in that: The placing plate includes a placing plate body, which is circular. A groove for fixing and limiting the pot blank is opened on the upper part of the placing plate body. The diameter of the groove is larger than the outer diameter of the bottom of the pot blank, and the groove is precisely fixed and limited with the pot blank.

3. The curling device for a pot skirt according to claim 1, characterized in that: The guide mechanism includes a guide ring, which is ring-shaped, and has four guide protrusions arranged cross-symmetrically on the circumferential outer side of the guide ring, and a guide hole is opened at the center position of the guide protrusion; the guide column is fixedly arranged on the upper part of the bracket in a cross-symmetrical manner, the guide column passes through the guide hole of the guide ring, and the limit plate is fixedly arranged on the upper part of the guide column; four connecting columns are provided, and the connecting columns are fixedly arranged on the inner wall of the guide ring in a cross-symmetrical manner, and the connecting columns and the guide holes are radially corresponding.

4. The curling device for a pot skirt according to claim 3, characterized in that: The guide hole on the guide ring can slide up and down along the guide column; the diameter of the limiting disk is larger than the diameter of the guide column.

5. The curling device for the skirt of a pot blank according to claim 2, characterized in that: The placing plate body is arranged at the center of the guide ring, and the outer side wall of the placing plate body is fixedly connected to the inner side end of the connecting column of the guide ring.

6. The curling device for a pot skirt according to claim 1, characterized in that: The fixing nut is engaged and installed on the upper part of the support column. Two fixing nuts are arranged on each support column, one is arranged at the upper position of the support plate, and the other is arranged at the lower position of the support plate.

7. The device for curling the skirt of a pot blank according to claim 1, characterized in that: The stamping and curling mechanism includes a hydraulic cylinder 2, which is vertically fixed at the upper center position of the fixed square plate. There are four columns, which are respectively fixed at the four corners of the bottom of the fixed square plate. The telescopic rod of the hydraulic cylinder 2 passes through the bottom of the support plate, and the connecting head is fixed at the bottom center of the telescopic rod. The lower end surface of the connecting head is provided with an external thread; an internal threaded hole is provided at the upper center of the fixed boss, and the internal threaded hole on the upper part of the fixed boss is tightened and fixedly installed with the lower end of the connecting head; the stamping die is fixed at the bottom position of the fixed boss, and the stamping die is a hollow frustum with a closed upper part and an open lower part.

8. The device for curling the skirt of a pot blank according to claim 1, characterized in that: The bottom of the pot blank is placed in the groove on the upper part of the placing plate body; the diameter of the lower opening of the stamping die is larger than the diameter of the upper skirt of the pot blank.

Images