Curved Panel Pressure-holding and Shaping Fixture Based on Oscillating Pressure Roller Assembly

Abstract

The present invention discloses a pressure-holding and shaping fixture for a curved panel based on a swinging pressure roller assembly, which includes a detachable and replaceable shaping block, pressure-holding assemblies symmetrically arranged on both sides of the shaping block, a leveling assembly that can swing left and right in a cycle, and a distance sensor for monitoring the height difference between the two ends of the product to be pressure-held and shaped. The pressure-holding assembly includes a pressure-holding cylinder fixed on a support plate, a limit slide rail, a sliding plate, and a pressure-holding block. The leveling assembly includes a forward and reverse motor, a swinging frame, a leveling plate, a leveling cylinder, and a leveling flat plate fixedly connected to the top rod of the leveling cylinder. This pressure-holding and shaping fixture uses the pressure-holding assemblies at both left and right ends to position and clamp the curved panel, and uses the leveling assembly that continuously swings left and right to tightly roll the curved panel on the surface of the shaping block with a standard cylindricity. The leveling assembly and the pressure-holding assembly cooperate to fully flatten the curved panel and perform pressure-holding and shaping. After the leveling assembly undergoes multiple cycles of rolling and leveling actions, the cylindricity of the curved panel can be fully guaranteed, improving the forming quality of the curved panel.

Description

Technical Field

[0001] The present invention relates to the technical field of jig equipment, and particularly relates to a curved panel pressure-holding and shaping jig based on a swing roller assembly. Background Art

[0002] There is a communication device housing with a cylindrical curved surface design, and a high cylindricity of the curved surface is required. In the existing sheet metal process, the precision control is not high. In particular, there are very few processes for controlling the cylindricity, and there are almost no pressure-holding, shaping, and sizing jigs for sheet metal parts. In order to ensure that the sheet metal housing obtains a qualified cylindricity of the curved surface, it is necessary to specifically design a jig that can continuously hold the pressure of the sheet metal housing and effectively flatten and size it, so as to fill the technical gap and improve the forming quality of the sheet metal housing. Summary of the Invention

[0003] Object of the present invention: In view of the technical requirements in the background art, we design a curved panel pressure-holding and shaping jig based on a swing roller assembly, which can position and clamp the curved panel by the pressure-holding components at both ends, and use the leveling components that swing left and right continuously to tightly roll the curved panel on the surface of the sizing block with a standard cylindricity. The leveling components and the pressure-holding components cooperate to fully flatten the curved panel and hold the pressure for sizing. After multiple cyclic operations, the cylindricity of the curved panel surface can be fully ensured, and the forming quality of the curved panel can be improved.

[0004] The technical solution adopted to solve the above problems is:

[0005] A curved panel pressure-holding and shaping jig based on a swing roller assembly includes a detachable and replaceable sizing block fixed on a workbench, pressure-holding components symmetrically arranged on both sides of the sizing block, a leveling component that can swing left and right cyclically arranged at the rear of the sizing block, and a distance sensor for monitoring the height difference between the two ends of the product to be pressure-holding and shaped.

[0006] The sizing block is provided with different radius size specifications according to the inner curved surface shape of the product to be pressure-holding, shaped, and sized, and is fixedly connected to the workbench by bolts.

[0007] The pressure-holding component includes a pressure-holding cylinder fixed on a support plate, a limit slide rail, a sliding plate, and a pressure-holding block. The top rod of the pressure-holding cylinder is fixedly connected to the outer side surface of the pressure-holding block. The lower end of the pressure-holding block is fixedly connected to the sliding plate. The sliding plate is positioned and limited by the limit slide rail to achieve left and right sliding movements. The inner side surface of the pressure-holding block is provided with a curved surface that closely fits the outer surface of the product to be pressure-holding and shaped, and presses the product tightly on the sizing block.

[0008] The leveling assembly includes a forward and reverse motor, a swing frame, a leveling plate, a leveling cylinder, and a leveling board fixed under the ejector rod of the leveling cylinder. The forward and reverse motor is fixed at the lower end of the workbench, and the main shaft of the forward and reverse motor is fixedly connected to the swing frame, driving the swing frame to make a reciprocating left and right swinging motion. The leveling plate is fixedly connected to the upper end of the swing frame and is parallel to the outer curved surface of the product to be pressure-maintained and leveled. The leveling cylinder is fixedly connected to the leveling plate, driving the leveling board to perform an up and down pressing action, which can tightly press the leveling board against the outer curved surface of the product to be pressure-maintained and leveled, realizing the leveling of the product, and tightly fitting the product with the shaping block, cooperating with the pressure-maintaining blocks on both left and right sides to completely fit the inner curved surface of the product on the surface of the shaping block, and maintaining the pressure for a certain period of time, and the swing frame makes a reciprocating left and right motion to further level the product.

[0009] Further, leveling rollers are evenly arranged at intervals on the lower curved surface of the leveling board, and the leveling rollers are connected by pin shafts and pin holes.

[0010] Further, the shaping block is arranged in a segmented manner, including a left shaping block, a right shaping block, and an upper shaping block, so as to reduce the weight and volume of a single shaping block.

[0011] Further, the pressure-maintaining cylinders of the pressure-maintaining assembly include a left pressure-maintaining cylinder and a right pressure-maintaining cylinder, and both pressure-maintaining cylinders can be independently controlled by a PLC for telescopic actions.

[0012] Further, distance sensors are respectively arranged on the outer sides of the left shaping block and the right shaping block.

[0013] The beneficial effects of the present invention are:

[0014] 1. The curvilinear panel pressure-maintaining and shaping fixture based on the swing pressure roller assembly uses the pressure-maintaining assemblies at both left and right ends to position and clamp the curvilinear panel, and uses the leveling assembly that continuously swings left and right to tightly roll and press the curvilinear panel on the surface of the shaping block with a standard cylindricity. The leveling assembly and the pressure-maintaining assembly cooperate to fully flatten the curvilinear panel and perform pressure-maintaining and shaping;

[0015] 2. The shaping blocks arranged in a segmented manner can be replaced with different specification models according to needs, and also reduce the weight and volume of a single shaping block;

[0016] 3. By using the distance sensors, the height difference at both ends of the curvilinear panel can be monitored, so as to utilize the rolling friction of the leveling rollers of the leveling assembly and compensate for the height difference in the reverse direction;

[0017] 4. After the leveling assembly performs multiple cycles of rolling and leveling actions, the cylindricity of the curved surface of the curvilinear panel can be fully guaranteed, and the forming quality of the curvilinear panel can be improved. Description of the Drawings

[0018] Figure 1This is a schematic structural diagram of a pressing and shaping fixture for a curved panel based on a swinging roller assembly in this embodiment;

[0019] Figure 2 This is a front view of a pressing and shaping fixture for a curved panel based on a swinging roller assembly in this embodiment;

[0020] Figure 3 This is a schematic diagram of the state where the curved panel in this embodiment is under pressure and flattened;

[0021] Figure 4 is Figure 3 a partial enlarged view of part A in

[0022] Figure 5 This is a schematic diagram of the swinging state of the flattening assembly in this embodiment;

[0023] Wherein, 1 - left pressure - maintaining block, 2 - curved panel, 3 - swinging frame, 4 - flattening cylinder, 5 - calibration plate, 6 - flattening plate, 7 - right pressure - maintaining block, 8 - right pressure - maintaining cylinder, 9 - support plate, 10 - limit slide rail, 11 - workbench, 12 - right shaping block, 13 - upper shaping block, 14 - left shaping block, 15 - left pressure - maintaining cylinder, 16 - forward - reverse motor, 17 - left distance sensor, 18 - right distance sensor, 19 - flattening roller, 20 - pin shaft, 21 - sliding plate. Specific Embodiment

[0024] Next, the technical solution of the present invention will be clearly and completely described by way of embodiments in conjunction with the accompanying drawings.

[0025] Please refer to Figures 1-5 , this embodiment provides a pressing and shaping fixture for a curved panel 2 based on a swinging roller assembly, including a detachable and replaceable shaping block fixed on the workbench 11, pressure - maintaining assemblies symmetrically arranged on both sides of the shaping block, a flattening assembly that can swing left and right in a cycle arranged at the rear of the shaping block, and distance sensors for monitoring the height difference between both ends of the product to be pressed and shaped.

[0026] Specifically, the shaping block is set with different radius size specifications according to the inner curved surface shape of the product to be pressed, shaped, and fixed, and is fixedly connected to the workbench 11 by bolts.

[0027] Refer to Figure 1 and Figure 2, the pressure-holding assembly includes a pressure-holding cylinder fixed on the support plate 9, a limit slide rail 10, a sliding plate 21 and a pressure-holding block. The pressure-holding block includes a left pressure-holding block 1 and a right pressure-holding block 7. The pressure-holding cylinder includes a left pressure-holding cylinder 15 and a right pressure-holding cylinder 8. The ejector rod of the pressure-holding cylinder is fixedly connected to the outer side surface of the pressure-holding block. The lower end of the pressure-holding block is fixedly connected to the sliding plate 21. The sliding plate 21 is positioned and limited by the limit slide rail 10 to realize the left and right sliding movement. The inner side surface of the pressure-holding block is provided with a curved surface that closely fits the outer surface of the product to be pressure-formed and held, and presses the curved panel product tightly against the shaping block.

[0028] Refer to Figure 1 , Figure 2 and Figure 4 , the leveling assembly includes a forward and reverse motor 16, a swing frame 3, a leveling plate 5, a leveling cylinder 4 and a leveling plate 6 fixedly connected to the ejector rod of the leveling cylinder 4. The forward and reverse motor 16 is fixed at the lower end of the workbench 11. The main shaft of the forward and reverse motor 16 is fixedly connected to the swing frame 3 to drive the swing frame 3 to make a cyclic left and right swinging movement. The leveling plate 5 is fixedly connected to the upper end of the swing frame 3 and is parallel to the outer curved surface of the product to be pressure-held and leveled. The leveling cylinder 4 is fixedly connected to the leveling plate 5 to drive the leveling plate 6 to perform an up and down pressing action, and can press the leveling plate 6 tightly against the outer curved surface of the product to be pressure-held and leveled, so as to level the product, and closely fit the product with the shaping block, cooperate with the pressure-holding blocks on both left and right sides to completely fit the inner curved surface of the product on the surface of the shaping block, and maintain the pressure for a certain period of time, and the swing frame 3 makes a cyclic left and right movement to further level the product.

[0029] A further implementation scheme is, refer to Figure 4 , evenly spaced leveling rollers 19 are arranged on the lower curved surface of the leveling plate 6, and the leveling rollers 19 are connected by pin shafts 20 through shaft-hole cooperation.

[0030] A further implementation scheme is, refer to Figure 1 and Figure 2 , the shaping block is arranged in a segmented manner, including a left shaping block 14, a right shaping block 12 and an upper shaping block 13, so as to reduce the weight and volume of a single shaping block.

[0031] A further implementation scheme is, distance sensors are respectively arranged on the outer sides of the left shaping block 14 and the right shaping block 12, including a left distance sensor 17 and a right distance sensor 18.

[0032] A further implementation scheme is, the telescopic actions of the two pressure-holding cylinders of the pressure-holding assembly can be independently controlled by a PLC. In particular, the left distance sensor 17 and the right distance sensor 18 are used to monitor the height difference at both ends of the curved panel. When one side is higher and the other side is lower, the leveling assembly is used to reversely push and correct the attitude of the curved panel, and the ejector thrust of the pressure-holding cylinder is contracted for convenient adjustment.

[0033] The working principle is as follows: when the leveling component swings to the left, the pressure-holding cylinder on the right tightly pushes against the right end of the curved panel to fully flatten the curved panel; when the leveling component swings to the right, the pressure-holding cylinder on the left tightly pushes against the left end of the curved panel to fully flatten the curved panel. By repeating this cycle, the curved panel can be continuously flattened, and the pressure-holding shaping effect is excellent.

[0034] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes, modifications, substitutions, and variations can be made without departing from the gist of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressing and shaping fixture for curved panels based on a swinging pressure roller assembly, characterized in that: It includes a detachable and replaceable shaping block fixed on the workbench, pressure-holding components symmetrically arranged on both sides of the shaping block, a leveling component that can swing left and right cyclically and is arranged at the rear of the shaping block, and a distance sensor for monitoring the height difference between the two ends of the product being pressure-held and shaped. The shaping block is set with different radius size specifications according to the inner curved surface shape of the product to be pressure-held, shaped, and finalized, and is fixedly connected to the workbench by bolts. The pressure-holding component includes a pressure-holding cylinder fixed on the support plate, a limit slide rail, a sliding plate, and a pressure-holding block. The ejector rod of the pressure-holding cylinder is fixedly connected to the outer side surface of the pressure-holding block. The lower end of the pressure-holding block is fixedly connected to the sliding plate. The sliding plate is positioned and limited by the limit slide rail to achieve left and right sliding movements. The inner side surface of the pressure-holding block is provided with a curved surface that closely fits the outer surface of the product being pressure-held and shaped, and presses the product tightly on the shaping block. The leveling component includes a forward and reverse motor, a swing frame, a leveling plate, a leveling cylinder, and a leveling plate fixedly connected to the ejector rod of the leveling cylinder. The lower curved surface of the leveling plate is evenly provided with leveling rollers, and the leveling rollers are connected by pin shafts and holes in a matching manner. The forward and reverse motor is fixed at the lower end of the workbench, and the main shaft of the forward and reverse motor is fixedly connected to the swing frame, driving the swing frame to make cyclic left and right swing movements. The leveling plate is fixedly connected to the upper end of the swing frame and is parallel to the outer curved surface of the product to be pressure-held and leveled. The leveling cylinder is fixedly connected to the leveling plate, driving the leveling plate to make up and down pressing actions, and can tightly press the leveling plate on the outer curved surface of the product to be pressure-held and leveled, realizing the leveling of the product, and closely fitting the product with the shaping block, cooperating with the pressure-holding blocks on both sides to completely fit the inner curved surface of the product on the surface of the shaping block, and maintaining pressure for a certain time, and the swing frame makes cyclic left and right movements to further level the product. The shaping block is set in a segmented manner, including a left shaping block, a right shaping block, and an upper shaping block.

2. The pressure-holding and shaping fixture for curved panels based on the swing pressure roller assembly according to claim 1, characterized in that: The pressure-holding cylinders of the pressure-holding component include a left pressure-holding cylinder and a right pressure-holding cylinder, and both pressure-holding cylinders are independently controlled by a PLC for telescopic actions.

3. The pressure maintaining and shaping fixture for curved panels based on the swinging pressure roller assembly according to claim 1, characterized in that: Distance sensors are respectively arranged on the outer sides of the left shaping block and the right shaping block.

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