A manual hemming device for automobile body-in-white stamping parts

Abstract

The present invention discloses a manual hemming device for automobile body-in-white stamping parts, comprising a frame, a workpiece membrane arranged on the frame, at least one rolling trolley arranged on the workpiece membrane, and a hemming roller arranged on the rolling trolley accordingly. The frame is provided with a supporting positioning structure for stably positioning the workpiece, the workpiece membrane is provided with a roller for guiding the rolling trolley, the rolling trolley is provided with a trolley handle, and the roller angle of the hemming roller is consistent with the angle of the workpiece to be hemmed. The hemming roller is installed on the rolling trolley through a self-locking mechanism. The number of rolling trolleys and hemming rollers with different roller angles of the present invention can be equipped according to the requirements of the processing procedures, the structure is simple, the operation is convenient, and it is easy to install and adjust. The rolling trolley can be reused, and running along the track saves time and labor, reduces processing costs, and is more suitable for flexible processing of small batch stamping parts of multiple models.

Description

Technical Field

[0001] The invention relates to a manual hemming device for automobile body-in-white stamping parts, belonging to the technical field of automobile stamping part processing. Background Art

[0002] The closed parts in the automobile body-in-white stamping parts are usually composed of an outer panel wrapping an inner panel. After the inner panel is placed, the outer panel's flange or folded edge is rolled. Rolling is one of the commonly used processing technologies for automobile body-in-white stamping parts. Currently, a press is used for rolling. The upper mold of the press presses the lower mold, and the folded edge is pressed tightly by the mold closing to achieve the bending of the folded edge, so that the outer panel wraps the inner panel to achieve the purpose of assembly. Although this method can achieve the purpose of assembling the inner and outer panels, the press is expensive and the investment cost is high.

[0003] There is also an existing method of using a robot to carry a rolling tool for rolling. The robot drives the roller to roll the folded edge of the outer plate 141 of the stamping workpiece 14 and wrap the inner plate 142. It can also ensure a small working area and flexible manufacturing, especially in the hemming of some small batch parts. However, this type of rolling adds an additional robot. In addition, the robot-linked rolling debugging takes a very long time. Therefore, whether it is a press or a robot for rolling, the initial investment cost is too high, resulting in high processing costs for stamping parts. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a manual hemming device for automobile body-in-white stamping parts which has a simple structure, is easy to operate, has a low processing cost and is particularly suitable for hemming processing of small batches of parts.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A manual hemming device for automobile body-in-white stamping parts, comprising a frame, a workpiece membrane arranged on the frame, at least one rolling trolley arranged on the workpiece membrane and a rolling roller correspondingly arranged on the rolling trolley, the frame is provided with a supporting positioning structure for stably positioning the workpiece, the workpiece membrane is provided with a roller for guiding the rolling trolley, the rolling trolley is provided with a trolley handle, and the roller angle of the rolling roller is consistent with the angle of the workpiece to be rolled.

[0006] The beneficial effects of the present invention are as follows: first, according to the angle of the workpiece before flanging or folding, determine how many processes the stamping part will be rolled. No matter how many processes are used, it is only necessary to select a rolling roller with a corresponding angle and install the rolling roller on a rolling trolley. The workpiece to be rolled is stably placed on the workpiece membrane under the action of the support and positioning structure. Since the workpiece membrane is made according to the workpiece, the workpiece can be completely fitted with the membrane when placed on the workpiece membrane. The rolling trolley is embedded in the rolling track of the workpiece membrane. The rolling roller acts on the folding of the workpiece. The worker holds the trolley handle and drives the rolling trolley to walk along the rolling track. The folding of the workpiece can be rolled by the rolling roller. A rolling track is added to the side of the membrane. The rolling trolley is used to unify the rolling track and the trolley can be reused. The use efficiency of the trolley is improved and the cost is reduced. The number of rolling trolleys and rolling rollers with different roller angles can be equipped according to the requirements of the processing procedures. In short, the present invention has a simple structure, is easy to operate, and is convenient to install and adjust. The roller trolley can be reused, and running along the track saves time and effort, reduces processing costs, and is more suitable for flexible processing of small batch stamping parts of multiple models.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the hemming roller is installed on the rolling track trolley through a self-locking mechanism.

[0009] The beneficial effect of adopting the above further scheme is that the rolling trolley can be first installed on the rolling track through the self-locking mechanism, and the hemming roller can be flipped outward and away from the workpiece membrane through the clamp to facilitate the placement of the workpiece on the membrane. After the workpiece is placed, the hemming roller is flipped inward by the clamp to achieve the hemming of the workpiece; the hemming roller is installed on the rolling trolley through the self-locking mechanism. On the one hand, it ensures that the hemming roller can be locked by the self-locking mechanism to ensure the installation stability of the hemming roller, and on the other hand, it facilitates the connection between the hemming roller and the rolling trolley, ensuring that the roller angle of the hemming roller corresponds to the required folding angle.

[0010] Furthermore, the track of the raceway is adapted to the track of the folded edge of the workpiece to be processed.

[0011] The beneficial effect of adopting the above further solution is to ensure that the hemming roller can always perform hemming operations on the folded edges of the workpiece under the action of the roller carriage moving along the roller track, thereby ensuring the hemming quality of the workpiece.

[0012] Furthermore, a workpiece conforming surface for supporting the workpiece is provided on the top of the workpiece fetal membrane, and the vertical spacing between the raceway and the workpiece conforming surface is equal.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that when the workpiece is placed on the workpiece membrane, the workpiece can keep in close contact with the workpiece conforming surface, and the vertical distance between the raceway and the workpiece conforming surface is equal everywhere. On the one hand, it ensures the smooth movement of the raceway trolley in the raceway, and at the same time ensures the pressure of the rolling roller on the folding of the outer plate during rolling, thereby ensuring the quality of the folding.

[0014] Furthermore, the rolling trolley includes an inner mounting plate, an outer mounting plate, a first transverse surface roller arranged between the inner and outer mounting plates, a second transverse surface roller, a second vertical surface roller arranged on the inner mounting plate, a third vertical surface roller, a first vertical surface roller arranged on the outer mounting plate, a fourth vertical surface roller and the trolley handle connected to the outer mounting plate, and adjustment bolts are respectively provided between the first vertical surface roller and the second vertical surface roller and between the third vertical surface roller and the fourth vertical surface roller.

[0015] The beneficial effect of adopting the above further scheme is that a trolley mounting block for mounting the self-locking mechanism is provided on the trolley handle. The first vertical roller and the second vertical roller are respectively positioned on the outer and inner sides of the upper rib of the raceway, the third vertical roller and the fourth vertical roller are respectively positioned on the inner and outer sides of the lower rib of the raceway, the first transverse roller support is positioned at the bottom of the upper rib of the raceway, and the second transverse roller support is positioned at the top of the lower baffle of the raceway. The spacing between the corresponding rollers is stable, unique and accurate, and the function of the adjusting bolt is to adjust the spacing between the inner and outer mounting plates, thereby adjusting the spacing between the vertical rollers. The specific adjusting bolt has threads at both ends, one end is a right-handed thread, and the other end is a left-handed thread, so as to achieve adjustment of the raceway trolley, thereby achieving stable positioning of the raceway trolley in the raceway. The raceway trolley is provided with six rollers, each of which will be in close contact with the surface of the raceway, thereby ensuring that the running track of the raceway trolley is unique.

[0016] Furthermore, the raceway includes a raceway positioning cavity and an upper rib and a lower rib arranged at the opening of the raceway positioning cavity, the upper rib includes a first vertical surface, a second vertical surface and a first transverse surface connecting the first and second vertical surfaces, the lower rib includes a third vertical surface, a fourth vertical surface and a second transverse surface connecting the third and fourth vertical surfaces, the first transverse surface and the second transverse surface are respectively parallel to the workpiece following surface, and the first vertical surface is parallel to the second vertical surface, the third vertical surface, and the fourth vertical surface.

[0017] The beneficial effect of adopting the above further scheme is that the curvature of the workpiece following the profile surface of the roller and the tire membrane changes in a consistent manner, the vertical surface and the following profile surface always remain perpendicular, and the outer contour line of the following profile surface is consistent with the folding contour line of the workpiece, and the vertical surface of the roller can always maintain a consistent spacing with the outer contour line. No matter how the workpiece following profile surface changes, the spacing between the first vertical surface and the second vertical surface is unique and accurate and remains unchanged, the spacing between the third vertical surface and the fourth vertical surface is also the same and remains unchanged, the transverse surface and the following profile surface always remain parallel, and no matter how the following profile surface changes, the spacing between the first and second transverse surfaces is constant and accurate, that is, the spacing between the two is the same everywhere and always remains consistent, thereby ensuring the pressure of the hemming roller on the folding of the outer plate during hemming, thereby ensuring the quality of the hemming.

[0018] Furthermore, the self-locking mechanism includes a clamp seat, a clamp connecting rod, a clamp rocker arm and a clamp handle, the inner end of the clamp handle is hinged to the clamp seat, the middle part of the clamp handle is hinged to one end of the clamp connecting rod through a hinge pin, the clamp seat is provided with a positioning groove matched with the other end of the clamp connecting rod, one end of the clamp rocker arm is hinged to the clamp seat, and the other end is connected to the wheel frame of the hemming roller.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that when the clamp connecting rod is in the positioning groove, a dead point is formed when the hinge pin and the hinge fulcrum of the clamp handle are in the same straight line. At this time, no matter how much force the roller is subjected to, the clamp rocker arm will not flip outward, thereby ensuring the hemming effect. When the clamp handle is manually flipped outward, the clamp rocker arm will flip, and the clamp connecting rod will leave the positioning groove. The hemming roller can be turned up, and then the workpiece can be placed on the fetal membrane. The hemming roller will not hinder the placement of the workpiece. After the workpiece is placed, the clamp handle can be flipped inward, the clamp connecting rod is embedded in the positioning groove, and the clamp rocker arm with the hemming roller can apply force to the folding edge of the outer panel of the workpiece for hemming.

[0020] Furthermore, a gasket is provided between the clamp rocker arm and the wheel frame of the hemming roller.

[0021] The beneficial effect of adopting the above further solution is that the height of the hemming roller can be better adjusted by using the gasket, the clamp rocker arm is connected to the wheel frame bracket through the positioning pin and the locking bolt, and a shoulder is provided in the middle of the clamp rocker arm. One pin and one shoulder can accurately position the wheel frame of the roller, ensuring the relative position of the roller is accurate.

[0022] Furthermore, the supporting and positioning structure includes a workpiece pressing block for pressing the workpiece.

[0023] The beneficial effect of adopting the above further solution is that the pressing block can ensure the position accuracy of the inner panel, and at the same time assist and ensure the positioning accuracy of the outer panel, thereby ensuring the hemming quality of the workpiece.

[0024] Furthermore, a plurality of the workpiece pressing blocks are mounted on a pressing block mounting frame.

[0025] The beneficial effect of adopting the above further solution is that it facilitates the workpiece pressing block to quickly and efficiently press the workpiece, thereby improving the positioning efficiency of the workpiece.

[0026] Furthermore, the supporting and positioning structure also includes at least one suction cup for adsorbing the workpiece, and the suction cup is arranged on the frame through a suction cup mounting frame.

[0027] The beneficial effect of adopting the above further scheme is that the workpiece is placed on the fetal membrane, the fetal membrane and the workpiece are fitted accordingly, and then the outer panel of the workpiece can be fixed by suction cups to ensure that the outer panel does not move when deformed by force, thereby avoiding affecting the hemming quality and hemming effect of the workpiece.

[0028] Furthermore, the support positioning structure also includes at least one workpiece positioning block, and the workpiece positioning block is arranged on the frame through a positioning block mounting frame.

[0029] The beneficial effect of adopting the above further scheme is that the suction cup is a ring structure, and when the suction cup adsorbs the workpiece, the workpiece is easy to sink, while the setting of the workpiece positioning block can stably support the workpiece and prevent the workpiece from sinking, thereby ensuring the positioning accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 This is a schematic structural diagram of the fetal membrane of the workpiece of the present invention;

[0032] Figure 3 for Figure 2 The cross-sectional view along the AA direction;

[0033] Figure 4 for Figure 2 The cross-sectional view along the BB direction;

[0034] Figure 5 It is a schematic diagram of the three-dimensional structure of the fetal membrane of the workpiece of the present invention;

[0035] Figure 6 It is a structural schematic diagram of the rolling track trolley of the present invention;

[0036] Figure 7 It is a schematic diagram of the split structure of the rolling track trolley of the present invention;

[0037] Figure 8 It is a structural schematic diagram of the locking mechanism of the present invention;

[0038] Fig. 9 It is a three-dimensional structural schematic diagram of the locking mechanism of the present invention;

[0039] Fig.10 It is a structural schematic diagram of the locking mechanism of the present invention in a released state;

[0040] Fig.11 It is a structural schematic diagram of an angle hemming roller of the present invention;

[0041] Fig.12 It is a structural schematic diagram of another angle hemming roller of the present invention;

[0042] Fig.13 It is a schematic diagram of the three-dimensional structure of the workpiece of the present invention;

[0043] Fig.14 It is a schematic diagram of the cross-sectional structure of a workpiece of the present invention;

[0044] Fig.15 for Fig.14 A partial enlarged view of point C in the middle;

[0045] Fig.16 It is a structural schematic diagram of the hemming roller of the present invention in an outwardly turned state;

[0046] Fig.17 It is a structural schematic diagram of the hemming roller of the present invention in the hemming state;

[0047] Fig.18 It is a structural schematic diagram of the first rolling edge state of the present invention;

[0048] Fig.19 for Fig.18 A partial enlarged view of point D in the middle;

[0049] Fig. 20 It is a structural schematic diagram of the second rolling edge state of the present invention;

[0050] Fig.21 for Fig. 20 A partial enlarged view of point E in the middle;

[0051] In the figure, 1, frame; 2, fetal membrane; 201, roller; 202, follow-up surface; 203, roller positioning cavity; 204, upper rib; 205, lower rib; 3, roller trolley; 301, trolley handle; 302, inner mounting plate; 303, outer mounting plate; 304, first transverse roller; 305, second transverse roller; 306, second vertical roller; 307, third vertical roller; 308, first vertical roller; 309, fourth vertical roller; 310, adjusting screw Bolt; 311, trolley mounting block; 4, self-locking mechanism; 401, clamp seat; 402, clamp connecting rod; 403, clamp rocker arm; 404, clamp handle; 405, hinge pin; 406, positioning groove; 407, shoulder; 5, hemming roller; 6, positioning pin; 7, locking bolt; 8, suction cup; 9, suction cup mounting frame; 10, workpiece positioning block; 11, positioning block mounting frame; 12, workpiece pressure block; 13, pressure block mounting frame; 14, workpiece; 141, outer plate; 142, inner plate. DETAILED DESCRIPTION

[0052] The principles and features of the present invention are described below in conjunction with examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0053] like Figure 1-Figure 21 As shown, a manual hemming device for automobile body-in-white stamping parts comprises a frame 1, a workpiece membrane 2 arranged on the frame, at least one rolling trolley 3 arranged on the workpiece membrane and a hemming roller 5 correspondingly arranged on the rolling trolley, the frame is provided with a supporting positioning structure for stably positioning the workpiece, the workpiece membrane 2 is provided with a rolling track 201 for guiding the rolling trolley, the rolling trolley 3 is provided with a trolley handle 301, and the roller angle of the hemming roller is consistent with the angle of the workpiece to be rolled.

[0054] The hemming roller is installed on the rolling trolley through the self-locking mechanism 4. The rolling trolley can be installed on the rolling track through the self-locking mechanism, and the hemming roller is turned outwards away from the workpiece membrane through the clamp to facilitate the placement of the workpiece on the membrane. After the workpiece is placed, the hemming roller is turned inwards through the clamp to achieve the hemming of the workpiece; the hemming roller is installed on the rolling trolley through the self-locking mechanism, which ensures that the hemming roller can be locked by the self-locking mechanism to ensure the installation stability of the hemming roller, and facilitates the connection between the hemming roller and the rolling trolley, ensuring that the roller angle of the hemming roller corresponds to the required hemming angle.

[0055] The track of the rolling track is adapted to the track of the folded edge of the workpiece to be processed, so that the rolling roller can always perform the rolling operation on the folded edge of the workpiece under the action of the rolling track trolley traveling along the rolling track, thereby ensuring the quality of the rolling edge of the workpiece.

[0056] The top of the workpiece membrane is provided with a workpiece following surface 202 for supporting the workpiece, and the vertical spacing between the roller and the workpiece following surface is equal. When the workpiece is placed on the workpiece membrane, the workpiece can be kept in contact with the workpiece following surface, and the vertical distance between the roller and the workpiece following surface is equal everywhere, which ensures the smooth movement of the roller trolley in the roller, and at the same time ensures the pressure of the roller wheel on the folding of the outer plate during the folding, thereby ensuring the quality of the folding.

[0057] The roller trolley 3 comprises an inner mounting plate 302, an outer mounting plate 303, a first horizontal roller 304 and a second horizontal roller 305 arranged between the inner and outer mounting plates, a second vertical roller 306 and a third vertical roller 307 arranged on the inner mounting plate, a first vertical roller 308 and a fourth vertical roller 309 arranged on the outer mounting plate, and the trolley handle 301 connected to the outer mounting plate, and adjustment bolts 310 are respectively arranged between the first vertical roller and the second vertical roller and between the third vertical roller and the fourth vertical roller. The trolley handle is provided with a trolley mounting block 311 for mounting the self-locking mechanism. The first vertical roller and the second vertical roller are positioned on the outer and inner sides of the upper rib of the raceway, respectively. The third vertical roller and the fourth vertical roller are positioned on the inner and outer sides of the lower rib of the raceway, respectively. The first transverse roller support is positioned at the bottom of the upper rib of the raceway, and the second transverse roller support is positioned at the top of the lower baffle of the raceway. The spacing between the corresponding rollers is stable, unique and precise. The function of the adjusting bolt is to adjust the spacing between the inner and outer mounting plates, thereby adjusting the spacing between the vertical rollers. The specific adjusting bolt has threads at both ends, one end is a right-handed thread, and the other end is a left-handed thread, to achieve adjustment of the raceway trolley, thereby achieving stable positioning of the raceway trolley in the raceway. The raceway trolley is provided with six rollers, each of which will fit in contact with the surface of the raceway, thereby ensuring that the running track of the raceway trolley is unique.

[0058] The raceway includes a raceway positioning cavity 203 and an upper rib 204 and a lower rib 205 arranged at the opening of the raceway positioning cavity, the upper rib includes a first vertical surface, a second vertical surface and a first transverse surface connecting the first and second vertical surfaces, the lower rib includes a third vertical surface, a fourth vertical surface and a second transverse surface connecting the third and fourth vertical surfaces, the first transverse surface and the second transverse surface are parallel to the workpiece following surface respectively, the first vertical surface is parallel to the second vertical surface, the third vertical surface and the fourth vertical surface. The curvature change of the raceway and the workpiece following surface on the tire membrane is consistent, the vertical surface and the following surface are always kept perpendicular, and the outer contour line of the following surface is consistent with the folding contour line of the workpiece, and the vertical surface of the raceway can always keep a consistent spacing with the outer contour line. No matter how the workpiece conforming surface changes, the spacing between the first vertical surface and the second vertical surface is unique and precise and remains unchanged. The spacing between the third vertical surface and the fourth vertical surface is also the same and remains unchanged. The transverse surface and the conforming surface always remain parallel. No matter how the conforming surface changes, the spacing between the first and second transverse surfaces is constant and precise, that is, the spacing between the two is the same everywhere and always remains consistent, thereby ensuring the pressure of the rolling roller on the folding of the outer panel during rolling, thereby ensuring the quality of the folding.

[0059] The self-locking mechanism 4 includes a clamp seat 401, a clamp connecting rod 402, a clamp rocker arm 403 and a clamp handle 404. The inner end of the clamp handle is hinged to the clamp seat, and the middle part of the clamp handle is hinged to one end of the clamp connecting rod through a hinge pin 405. The clamp seat is provided with a positioning groove 406 adapted to the other end of the clamp connecting rod. One end of the clamp rocker arm is hinged to the clamp seat, and the other end is connected to the wheel frame of the hemming roller. When the clamp connecting rod is in the positioning groove, and the hinge pin and the hinge fulcrum of the clamp handle are on the same line, as shown in FIG. Figure 8 A dead point is formed as shown. At this time, no matter how much force the roller is subjected to, the clamp rocker arm will not flip outward, thereby ensuring the hemming effect. When the clamp handle is manually flipped outward, the clamp rocker arm will flip, and the clamp connecting rod will leave the positioning groove. The hemming roller can be turned up, and then the workpiece can be placed on the fetal membrane. The hemming roller will not hinder the placement of the workpiece. After the workpiece is placed, the clamp handle can be flipped inward, the clamp connecting rod is embedded in the positioning groove, and the clamp rocker arm with the hemming roller can apply force to the folding edge of the outer panel of the workpiece for hemming.

[0060] A gasket is provided between the clamp rocker arm and the wheel frame of the hemming roller. The gasket is used to better adjust the height of the hemming roller. The clamp rocker arm is connected to the wheel frame bracket through a positioning pin 6 and a locking bolt 7. A shoulder 407 is provided in the middle of the clamp rocker arm. One pin and one shoulder can accurately position the wheel frame of the roller, ensuring the relative position of the roller is accurate.

[0061] The supporting and positioning structure further comprises a workpiece pressing block 12 for pressing the workpiece. The pressing block ensures the position accuracy of the inner plate, and assists and ensures the positioning accuracy of the outer plate, thereby ensuring the hemming quality of the workpiece.

[0062] A plurality of workpiece pressing blocks 12 are mounted on a pressing block mounting frame 13, so that the workpiece pressing blocks can quickly and efficiently press the workpieces, thereby improving the positioning efficiency of the workpieces.

[0063] The supporting and positioning structure includes at least one suction cup 8 for adsorbing the workpiece, and the suction cup is arranged on the frame through a suction cup mounting frame 9. The suction cup is arranged inside the fetal membrane of the workpiece, and the workpiece is placed on the fetal membrane, and the fetal membrane and the workpiece are correspondingly fitted, and then the outer plate of the workpiece can be adsorbed and fixed by the suction cup to ensure that the outer plate does not move when deformed by force, so as to avoid affecting the hemming quality and hemming effect of the workpiece.

[0064] The support and positioning structure further includes at least one workpiece positioning block 10, which is arranged on the frame through a positioning block mounting frame 11. The suction cup is an annular structure, and when the suction cup adsorbs the workpiece, the workpiece is prone to sink, while the setting of the workpiece positioning block can stably support the workpiece and prevent the workpiece from sinking, thereby ensuring the positioning accuracy of the workpiece.

[0065] The hemming roller is driven by a roller trolley. The roller is equipped with bearings inside, which makes the rolling smoother. Rollers with various angles can be provided according to the process requirements. For example, the thickness of the plate, the angle before folding, etc. are combined to determine the number of hemming steps, and then the number of roller trolleys is equipped. According to the angle before flanging, it is determined how many steps the stamping part will be rolled. Figure 18-Figure 21 As shown, to flatten a 90-degree flange to 0 degrees, the first roller can press 90 degrees to 45 degrees, and the second roller can press 45 degrees to 0 degrees. Fig.15 The figure shows the folding state of the outer panel after two rolling steps; of course, it can also be divided into three steps. In the first process, the roller with the corresponding angle can be used to press the 90-degree fold into a 60-degree fold, and in the second process, the roller with the corresponding angle can be used to press the 60-degree fold into 30 degrees. In the third process, the roller with the corresponding angle can be used to press the 30-degree fold into 0 degrees to complete the rolling of the workpiece; in short, if there are several rolling steps, several roller trolleys can be installed on the tire membrane, and the roller trolleys correspond to the rollers with corresponding angles.

[0066] After the workpiece 14 is placed on the fetal membrane, the suction cup is adsorbed, and then the block mounting frame is placed on it. Fig.16As shown, before the workpiece is placed, the roller can be turned outward by the self-locking mechanism to avoid affecting the positioning of the workpiece on the fetal membrane. After the workpiece is positioned, the self-locking mechanism is turned inward and locked, and the hemming can begin. The worker follows the order, first uses the clamp handle of the self-locking mechanism to lock the hemming roller of the corresponding angle, and then holds the trolley handle to circle around the fetal membrane to drive the roller to rotate. After one circle, open the clamp handle, replace the next roller trolley, press the hemming roller on the clamp handle of the second round, and then hold the trolley handle and rotate it for one circle. When each trolley rotates one circle, the hemming is completed. After the inner plate 142 and the outer plate 141 of the workpiece are rolled together, the suction cup is deflated, the pressure block mounting frame is removed, and finally the workpiece with the hemming completed is taken out.

[0067] In order to save costs, only one trolley can be designed, and different rollers can be repeatedly disassembled and assembled on the trolley to complete the hemming.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A manual hemming device for automobile body-in-white stamping parts, characterized in that: It includes a frame, a workpiece membrane arranged on the frame, at least one rolling trolley arranged on the workpiece membrane, and a hemming roller arranged on the rolling trolley accordingly, the frame is provided with a supporting positioning structure for stably positioning the workpiece, the workpiece membrane is provided with a rolling track for guiding the rolling trolley, the rolling trolley is provided with a trolley handle, and the roller angle of the hemming roller is consistent with the angle of the workpiece to be rolled; The track of the raceway is adapted to the folding track of the workpiece to be processed; a workpiece following surface for supporting the workpiece is provided on the top of the workpiece tire membrane, and the vertical spacing between the raceway and the workpiece following surface is equal; the raceway trolley comprises an inner mounting plate, an outer mounting plate, a first transverse surface roller arranged between the inner mounting plate and the outer mounting plate, a second transverse surface roller, a second vertical surface roller arranged on the inner mounting plate, a third vertical surface roller, a first vertical surface roller arranged on the outer mounting plate, a fourth vertical surface roller and a trolley handle connected to the outer mounting plate, and adjusting bolts are respectively provided between the first vertical surface roller and the second vertical surface roller and between the third vertical surface roller and the fourth vertical surface roller; The hemming roller is installed on the rolling track trolley through a self-locking mechanism; the self-locking mechanism includes a clamp seat, a clamp connecting rod, a clamp rocker arm and a clamp handle, the inner end of the clamp handle is hinged to the clamp seat, the middle part of the clamp handle is hinged to one end of the clamp connecting rod through a hinge pin, the clamp seat is provided with a positioning groove adapted to the other end of the clamp connecting rod, one end of the clamp rocker arm is hinged to the clamp seat, and the other end is connected to the wheel frame of the hemming roller; The supporting and positioning structure comprises a workpiece pressing block for pressing the workpiece, and a plurality of the workpiece pressing blocks are mounted on a pressing block mounting frame.

2. The manual hemming device according to claim 1, characterized in that: The raceway includes a raceway positioning cavity, an upper rib and a lower rib arranged at the opening of the raceway positioning cavity, the upper rib includes a first vertical surface, a second vertical surface and a first transverse surface connecting the first and second vertical surfaces, the lower rib includes a third vertical surface, a fourth vertical surface and a second transverse surface connecting the third and fourth vertical surfaces, the first transverse surface and the second transverse surface are parallel to the workpiece following surface respectively, the first vertical surface is parallel to the second vertical surface, and the third vertical surface is parallel to the fourth vertical surface.

3. The manual hemming device according to claim 1, characterized in that: The supporting and positioning structure comprises at least one suction cup for adsorbing a workpiece, and the suction cup is arranged on the frame through a suction cup mounting frame.

4. The manual hemming device according to claim 1, characterized in that: The support and positioning structure further comprises at least one workpiece positioning block, and the workpiece positioning block is arranged on the frame via a positioning block mounting frame.

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