Pneumatic positioning bending machine hold-down mechanism

Abstract

The utility model discloses a pneumatic positioning bending machine hold-down mechanism which comprises a pressing die, a mounting seat, a positioning mechanism and a driving device, the mounting seat is provided with a positioning cavity with an opening in the lower end, and the pressing die is arranged at the lower end of the mounting seat and located on the lower side of the positioning cavity; the positioning mechanism comprises a positioning piece, an air bag and an inflation and exhaust device, the positioning piece is movably arranged in the positioning cavity and is exposed out of the positioning cavity from the lower end opening, the air bag is arranged at the upper end of the positioning piece, the mounting seat is provided with an avoiding opening, the inflation and exhaust device is provided with an air pipe, the air pipe enters the positioning cavity from the avoiding opening and is connected with the air bag, and the pressing die is provided with a groove; thus, through the design of the positioning mechanism, the air bag is inflated and expanded to push the positioning piece to press and position the pressing die, the positioning piece and the pressing die are matched and positioned through the arrangement of the positioning groove, it is guaranteed that the mounting position of the pressing die is accurate, the assembling effect of the pressing die on the mounting base is guaranteed, the use stability of the mechanism is improved, and practicability is high; the application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of bending machines, and in particular to a pneumatically positioned bending machine holding mechanism. Background Technology

[0002] Currently, with economic development and the continuous improvement of living standards, the application of sheet metal is becoming increasingly widespread. Sheet metal products are widely used in people's lives, from automotive parts to computer cases, and from network communications to home appliances. Sheet metal structures are diverse. Moreover, sheet metal processing requires multiple bending and shaping of sheet metal according to product needs, making dimensional control difficult and the process complex. At the same time, sheet metal processing usually uses bending machines for bending operations. A bending machine is a machine that can bend sheet metal. Traditional bending machines are manual, with complex machine structures, heavy operation, low production efficiency, long processing time, and high costs, which cannot meet the needs of users.

[0003] Later, an automatic bending machine appeared on the market. It typically includes a positioning table, a pressing device, and a bending device. The sheet metal is placed on the positioning table, pressed and fixed by the pressing device, and then bent by the bending device. Since the pressing and positioning lengths of workpieces of different lengths are different, the pressing device needs to assemble multiple dies corresponding to the length of the workpiece to ensure that the pressing device applies uniform pressure to the workpiece, thereby ensuring the bending quality of the workpiece. However, the existing bending machine pressing device has a poor structural design. Multiple dies are installed one by one on the pressing device, which causes the assembly displacement of some dies to deviate from the assembly position of other dies. This results in the dies with misaligned positions not pressing the workpiece well, affecting the forming quality of the workpiece. Furthermore, dies with misaligned positions may also fall off the pressing device, reducing the stability of the pressing device and making it impractical and limited in application.

[0004] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology and its main objective is to provide a pneumatic positioning bending machine pressing mechanism. It utilizes an inflatable airbag to push the positioning component to press and position the die. With the addition of a positioning groove, it facilitates the matching and positioning between the positioning component and the die, ensuring the accurate installation position of the die, guaranteeing the assembly effect of the die on the mounting base, improving the stability of the mechanism, and demonstrating strong practicality and wide applicability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pneumatically positioned bending machine pressing and holding mechanism includes a pressing die, a mounting base, and a driving device; a plurality of pressing dies are provided, and the plurality of pressing dies are detachably mounted on the lower end of the mounting base; the driving device is driven and connected to the mounting base to control the raising or lowering of the mounting base, thereby realizing the pressing and positioning of the workpiece by the pressing die; characterized in that:

[0008] It also includes a positioning mechanism, which includes a positioning element, an airbag, and an inflation / deflation device;

[0009] The mounting base has a positioning cavity with an opening at the lower end, and the pressing mold is located below the positioning cavity; the outer side of the pressing mold has a first mounting part that extends laterally toward the mounting base, and the mounting base has a corresponding first mounting groove, with the first mounting part laterally positioned within the first mounting groove; the outer side of the mounting base has a second mounting part that extends laterally toward the pressing mold, and the upper end of the pressing mold has a second mounting groove, with the second mounting part laterally positioned within the second mounting groove, the first mounting groove being located below the second mounting part, and the positioning cavity being located between the first mounting groove and the second mounting part;

[0010] The airbags are positioned at the upper end of the positioning member and are all located within the positioning cavity. The positioning member is movable up and down, with its lower end protruding from the positioning cavity through an opening. Both ends of the positioning member have limiting portions for limiting its up and down movement within the positioning cavity. The inner wall of the positioning cavity is provided with a positioning step, and the lower end of the limiting portion contacts the upper end of the positioning step to limit the movement of the positioning member within the positioning cavity. The inflation and deflation device is located outside the mounting base, and the outer side of the mounting base is provided with a clearance opening corresponding to the positioning cavity. The inflation and deflation device has an air pipe that enters the positioning cavity through the clearance opening and connects to the airbag. The lower end of the positioning member is provided with a positioning portion, and the upper end of the molding is provided with a groove. When the airbag is inflated, it pushes the positioning member downward, causing the positioning portion to enter the groove.

[0011] As a preferred embodiment, the positioning part is a V-shaped structure that gradually decreases in size from top to bottom, and correspondingly, the groove is a V-shaped groove.

[0012] As a preferred embodiment, the height of the groove is less than that of the positioning part.

[0013] As a preferred embodiment, the positioning element has a T-shaped structure.

[0014] As a preferred embodiment, several positioning elements and several airbags are provided, and the positioning elements and several airbags are arranged at intervals along the length extension direction of the positioning cavity.

[0015] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly uses the design of the positioning mechanism to push the positioning component to press and position the mold by inflating the airbag. With the setting of the positioning groove, the positioning component and the mold are matched and positioned to ensure that the installation position of the mold is accurate and that the mold is assembled on the mounting base. The structure is ingenious and reasonable, which improves the stability of the mechanism and makes it highly practical and widely applicable.

[0016] Secondly, the positioning part is designed to facilitate the matching and positioning between the positioning part and the groove. At the same time, both the positioning part and the groove are V-shaped structures. When the positioning part is located on the side of the groove, it can also be guided into the groove during the downward movement to facilitate the positioning of the mold on the mounting base. This further ensures that the installation position of the mold is accurate and has good usability.

[0017] Furthermore, the setting of the limiting part and the positioning step is conducive to limiting the movement of the positioning part in the positioning cavity, ensuring the use of the positioning part.

[0018] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0020] Figure 2 This is a three-dimensional schematic diagram of another embodiment of the present utility model;

[0021] Figure 3 This is a cross-sectional view of an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached diagram:

[0023] 11. Press mold 111. First mounting part

[0024] 112. Second mounting slot; 113. Groove

[0025] 12. Mounting base 121. Positioning cavity

[0026] 122. Lower opening; 123. First mounting slot

[0027] 124. Second installation section; 125. Positioning step

[0028] 126. Clearance opening; 131. Positioning component

[0029] 132. Airbag; 133. Positioning unit

[0030] 134. Limiting part. Detailed Implementation

[0031] Please refer to Figures 1 to 3 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0032] A pneumatically positioned bending machine pressing mechanism includes a pressing die 11, a mounting base 12, a positioning mechanism, and a driving device (not shown in the figure). The mounting base 12 has a positioning cavity 121 with a lower opening 122. Several pressing dies 11 are provided, detachably mounted on the lower end of the mounting base 12 and located below the positioning cavity 121. The positioning mechanism includes a positioning element 131, an airbag 132, and an inflation / deflation device (not shown in the figure). The positioning element 131 is vertically movable within the positioning cavity 121, with its lower end protruding from the lower opening 122. The airbag 132 is positioned above the positioning element 131. Located inside the positioning cavity 121, the inflation and deflation device is disposed outside the mounting base 12. The outer side of the mounting base 12 is provided with a clearance opening 126 corresponding to the positioning cavity. The inflation and deflation device has an air pipe (not shown in the figure). The air pipe enters the positioning cavity 121 from the clearance opening 126 and connects to the airbag 132. The upper end of the pressure mold 11 is provided with a groove 113 for matching the positioning component. The driving device is connected to the mounting base 12 to control the mounting base 12 to rise or fall, thereby realizing the pressure mold 11 to press and position the workpiece. Preferably, a plurality of positioning components 131 and airbags 132 are provided, and the plurality of positioning components 131 and airbags 132 are arranged at intervals along the length extension direction of the positioning cavity 121.

[0033] In use, the mold is installed on the mounting base. The inflation and deflation device delivers gas into the airbag, which inflates to push the positioning component downwards, passing through the lower opening into the groove to hold and position the mold. To remove it, the inflation and deflation device sucks out the gas from the airbag, causing it to deflate and loosen the positioning component, thus unlocking the mold. The mold can then be disassembled. In this way, the inflation and expansion of the airbag pushes the positioning component to hold and position the mold. The positioning groove facilitates the matching and positioning between the positioning component and the mold, ensuring accurate installation of the mold and guaranteeing the assembly effect of the mold on the mounting base. The ingenious and reasonable structural design improves the stability of the mechanism, making it highly practical and widely applicable.

[0034] In this embodiment, the lower end of the positioning member 131 is provided with a positioning part 133 for contacting the groove. The positioning part 133 is a V-shaped structure that gradually decreases in size from top to bottom. Correspondingly, the groove 113 is a V-shaped groove, and the height of the groove 113 is less than that of the positioning part 133. Thus, the setting of the positioning part is conducive to the matching and positioning between the positioning member and the groove. At the same time, since both the positioning part and the groove are V-shaped structures, when the positioning part is located on the side of the groove, it can also be guided to extend into the groove during the downward movement, so as to facilitate the matching and positioning of the mold on the mounting base, further ensuring that the installation position of the mold is accurate and has good usability.

[0035] Specifically, the outer side of the mold 11 has a first mounting portion 111 that extends laterally toward the mounting base, and the mounting base 12 is provided with a first mounting groove 123 that matches the first mounting portion. The first mounting portion 111 is laterally positioned in the first mounting groove 123.

[0036] The outer side of the mounting base 12 has a second mounting portion 124 that extends laterally toward the mold. The upper end of the mold 11 is provided with a second mounting groove 112 that matches the second mounting portion. The second mounting portion 124 is laterally positioned in the second mounting groove 112. The first mounting groove 123 is located below the second mounting portion 124. The positioning cavity 121 is located between the first mounting groove 123 and the second mounting portion 124.

[0037] Furthermore, the positioning member 131 has a T-shaped structure, and both ends of the positioning member 131 have limiting portions 134 for limiting its vertical movement within the positioning cavity. The inner wall of the positioning cavity 121 is provided with a positioning step 125. The lower end of the limiting portion 134 contacts the upper end of the positioning step 125 to limit the movement of the positioning member within the positioning cavity. This facilitates the limiting of the movement of the positioning member within the positioning cavity and ensures the usability of the positioning member.

[0038] The key design feature of this utility model is that it utilizes the design of a positioning mechanism, which uses an inflatable airbag to push the positioning component to press and position the mold. Combined with the setting of the positioning groove, it facilitates the matching and positioning between the positioning component and the mold, ensuring the accurate installation position of the mold and guaranteeing the assembly effect of the mold on the mounting base. The structure is ingenious and reasonable, improving the stability of the mechanism, making it highly practical and widely applicable.

[0039] Secondly, the positioning part is designed to facilitate the matching and positioning between the positioning part and the groove. At the same time, both the positioning part and the groove are V-shaped structures. When the positioning part is located on the side of the groove, it can also be guided into the groove during the downward movement to facilitate the positioning of the mold on the mounting base. This further ensures that the installation position of the mold is accurate and has good usability.

[0040] Furthermore, the setting of the limiting part and the positioning step is conducive to limiting the movement of the positioning part in the positioning cavity, ensuring the use of the positioning part.

[0041] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A pneumatically positioned bending machine pressing and holding mechanism, comprising a pressing die, a mounting base, and a driving device; a plurality of pressing dies are provided, and the plurality of pressing dies are detachably mounted on the lower end of the mounting base; the driving device is driven and connected to the mounting base to control the raising or lowering of the mounting base, thereby realizing the pressing and positioning of the workpiece by the pressing die; characterized in that: It also includes a positioning mechanism, which includes a positioning element, an airbag, and an inflation / deflation device; The mounting base has a positioning cavity with an opening at the lower end, and the pressing mold is located below the positioning cavity; the outer side of the pressing mold has a first mounting part that extends laterally toward the mounting base, and the mounting base has a corresponding first mounting groove, with the first mounting part laterally positioned within the first mounting groove; the outer side of the mounting base has a second mounting part that extends laterally toward the pressing mold, and the upper end of the pressing mold has a second mounting groove, with the second mounting part laterally positioned within the second mounting groove, the first mounting groove being located below the second mounting part, and the positioning cavity being located between the first mounting groove and the second mounting part; The airbags are positioned at the upper end of the positioning member and are all located within the positioning cavity. The positioning member is movable up and down, with its lower end protruding from the positioning cavity through an opening. Both ends of the positioning member have limiting portions for limiting its up and down movement within the positioning cavity. The inner wall of the positioning cavity is provided with a positioning step, and the lower end of the limiting portion contacts the upper end of the positioning step to limit the movement of the positioning member within the positioning cavity. The inflation and deflation device is located outside the mounting base, and the outer side of the mounting base is provided with a clearance opening corresponding to the positioning cavity. The inflation and deflation device has an air pipe that enters the positioning cavity through the clearance opening and connects to the airbag. The lower end of the positioning member is provided with a positioning portion, and the upper end of the molding is provided with a groove. When the airbag is inflated, it pushes the positioning member downward, causing the positioning portion to enter the groove.

2. The pneumatically positioned bending machine pressing mechanism according to claim 1, characterized in that: The positioning part is a V-shaped structure that gradually decreases in size from top to bottom, and correspondingly, the groove is a V-shaped groove.

3. The pneumatically positioned bending machine pressing mechanism according to claim 2, characterized in that: The height of the groove is less than that of the positioning part.

4. The pneumatically positioned bending machine pressing mechanism according to claim 1, characterized in that: The positioning element has a T-shaped structure.

5. The pneumatically positioned bending machine pressing mechanism according to claim 1, characterized in that: The positioning element and the airbag are provided in several quantities, and the positioning element and the airbag are arranged at intervals along the length extension direction of the positioning cavity.

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