A three-step press module and method for an automotive door cover

Abstract

The application discloses a three-step pressing module and method for a car door cover, which comprises a fixed frame, a vertical sliding group, a horizontal sliding group and an inlay assembly; the position of the fixed frame is fixed; the vertical sliding group comprises a vertical movable frame and a vertical driving assembly; the vertical movable frame is slidably connected with the fixed frame along a vertical direction; the vertical driving assembly is used for driving the vertical movable frame to slide along the vertical direction relative to the fixed frame; the horizontal sliding group comprises a guide groove seat, a sliding plate and a horizontal driving piece; the guide groove seat is fixedly connected at the top end of the vertical movable frame, and the sliding plate is arranged in the guide groove seat; the horizontal driving piece is used for driving the sliding plate to slide in the guide groove seat along a horizontal direction; the inlay assembly comprises a mounting seat, a final pressing inlay and a pre-pressing inlay; the final pressing inlay and the pre-pressing inlay are fixedly connected on the top surface of the sliding plate through the mounting seat; and the pre-pressing inlay is provided with a first pre-pressing working surface and a second pre-pressing working surface. The three-step pressing of a large-angle opening on a part can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of hemming of inner and outer panels of a vehicle body-in-white door cover, and in particular to a three-step pressing module and method for a vehicle door cover. Background Art

[0002] Currently, dedicated press-fit technology is widely used in major automotive body-in-white (BIW) door hood production lines for the press-fit and hemming of inner and outer panels. This technology primarily targets left and right front doors, left and right rear doors, front and rear lids, and other components. It offers advantages such as stable processes and high production speeds. However, door hood press-fit technology and production equipment are subject to high costs and difficulties in technical improvement. Furthermore, the flange opening angles of certain locations on the outer panels of four doors and two lids are relatively large, requiring a three-step press-fit process to achieve a complete seal.

[0003] In order to reduce production costs, improve the use value of equipment, and avoid adding additional equipment for pre-pushing corners or pre-pushing edges, the present application invents a device that can achieve three-step pressing. Summary of the Invention

[0004] In order to solve at least one aspect of the above problems, the present invention provides a three-step pressing module for automobile door covers that has high stability, high precision, high working efficiency and can achieve three-step pressing.

[0005] The technical solution adopted by the present invention is that: the present invention provides a three-step pressing module for a car door cover, which is used on a three-step pressing special machine, including a fixed frame, a vertical sliding group, a horizontal sliding group and an insert assembly; the position of the fixed frame is fixed; the vertical sliding group includes a vertical movable frame and a vertical driving assembly; the vertical movable frame is slidably connected to the fixed frame in the vertical direction; the vertical driving assembly is connected between the fixed frame and the vertical movable frame for driving the vertical movable frame to slide relative to the fixed frame in the vertical direction; the horizontal sliding group includes a guide slot seat, a slide plate and a horizontal driving member; the guide slot seat is fixed to the top end of the vertical movable frame, the slide plate is arranged in the guide slot seat and is slidably connected with the guide slot seat in the horizontal direction; the horizontal driving member is connected to the slide plate for driving the slide plate to slide horizontally in the guide slot seat; the insert assembly includes a mounting seat, a final pressing insert and a pre-pressing insert; the mounting seat is fixedly connected to the first end of the top surface of the slide plate; the final pressing insert and the pre-pressing insert are arranged up and down, and are both fixedly connected and a second pre-pressing working surface and a second pre-pressing working surface are provided on the bottom end of the pre-pressing insert, and the inclination of the first pre-pressing working surface is greater than the inclination of the second pre-pressing working surface; the horizontal sliding group drives the insert assembly to reciprocate horizontally between the first pressing starting position and the pre-pressing preparation position, between the second pressing starting position and the pre-pressing and preparation position, and between the final pressing starting position and the final pressing preparation position; the vertical sliding group drives the insert assembly to reciprocate vertically between the first pressing starting position and the first pressing end position, between the second pressing starting position and the second pressing end position, between the final pressing starting position and the final pressing end position, and between the pre-pressing preparation position and the final pressing preparation position; when the insert assembly moves from the first pressing starting position to the first pressing end position, the part to be pressed contacts the first pre-pressing working surface; when the insert assembly moves from the second pressing starting position to the second pressing end position, the part to be pressed contacts the second pre-pressing working surface.

[0006] Preferably, it also includes a first stop assembly and a second stop assembly, the first stop assembly is used to mechanically protect and limit the insert assembly at the first step pressing start position and the first step pressing end position and the positions therebetween, and the second stop assembly is used to mechanically protect and limit the insert assembly at the second step pressing start position and the second step pressing end position and the positions therebetween, and the final pressing start position and the final pressing end position and the positions therebetween.

[0007] Preferably, the first stop assembly includes a stop cylinder, a first stop block and a second stop block; a through hole is provided on the slide; the stop cylinder is fixedly connected to the slide, the piston rod of the stop cylinder is passed through the through hole and moves in the vertical direction, and the first stop block is fixedly connected to the free end of the piston rod of the stop cylinder; the second stop block is fixedly connected to the top surface of the guide groove seat, and the direction from the first stop block to the second stop block is the same as the sliding direction of the slide; when the first stop block is connected to the second stop block, the insert assembly is in the first step pressing start position or the first step pressing end position or a position between the first step pressing start position and the first step pressing end position.

[0008] Preferably, the second stop assembly includes a third stop block and a fourth stop block, which are respectively fixedly connected to both sides of the first end of the guide groove seat and both correspond to the first end of the slide, and the distance between the third stop block and the fourth stop block is smaller than the dimension of the slide along a direction perpendicular to its sliding direction; when the two sides of the first end of the slide are respectively connected to the third stop block and the fourth stop block, the insert assembly is in the second step pressing starting position, or the second step pressing ending position, or a position between the second step pressing starting position and the second step pressing ending position, or the final pressing starting position, or the final pressing ending position, or a position between the final pressing starting position and the final pressing ending position.

[0009] Preferably, it also includes a first limiting component and a second limiting component. The first limiting component is used to mechanically protect and limit the insert component at the first step pressing end position and the second step pressing end position; the second limiting component is used to mechanically protect and limit the insert component at the final pressing end position.

[0010] Preferably, the first limit block includes a first limit block and a second limit block, the first limit block is fixedly connected to the first end of the bottom surface of the slide, and the second limit block is fixedly connected to the top of the fixed frame or the outer side wall of the bottom mold of the three-step pressing machine; when the insert assembly moves from the first step pressing starting position to the first step pressing ending position and from the second step pressing starting position to the second step pressing ending position, the first limit block is located directly above the second limit block, and when the first limit block is connected to the second limit block, the insert assembly is at the first step pressing ending position or the second step pressing ending position.

[0011] Preferably, the second limit block includes a third limit block and a fourth limit block, the third limit block is fixedly connected to the top of the vertical movable frame, and the fourth limit block is fixedly connected to the top of the fixed frame; when the insert assembly moves from the final pressing start position to the final pressing end position, the third limit block is located directly above the fourth limit block, and when the third limit block is connected to the fourth limit block, the insert assembly is in the final pressing end position.

[0012] Preferably, a plurality of position sensors are installed on the guide groove seat for detecting the position of the slide relative to the guide groove seat and transmitting signals to the control system of the three-step pressing machine.

[0013] Preferably, the vertical drive assembly includes a motor, a driving wheel, a driven wheel, a belt, a screw, and a nut; the motor is fixedly connected to the vertical movable frame; the driving wheel is coaxially fixedly connected to the output shaft of the motor, the driven wheel and the driving wheel are on the same horizontal plane, and the belt is simultaneously sleeved between the driving wheel and the driven wheel; the screw is vertically arranged, the screw is rotationally connected to the vertical movable frame, and the driven wheel is coaxially fixedly connected to the screw; the nut is sleeved on the screw and threadedly connected to the screw, and the nut is fixedly connected to the fixed frame.

[0014] The present application also provides a three-step pressing method for a car door cover, which is used in any of the above-mentioned three-step pressing modules for a car door cover, comprising the following steps:

[0015] Step 1: Place the outer panel parts and the inner panel parts on the bottom mold, move the pressing plate to contact the inner panel parts and apply pressing force, at this time the insert assembly is in the pre-pressing preparation position;

[0016] Step 2: driving the horizontal driving member to move the insert assembly from the pre-pressing preparation position to the first pressing start position;

[0017] Step 3: Operate the vertical drive assembly to move the insert assembly downward from the first pressing start position to the first pressing end position. During this process, the first pre-pressing working surface of the pre-pressing insert contacts the outer panel part and causes it to deform. When the insert assembly is at the first pressing end position, the outer panel part reaches the first expected deformation, and the vertical drive assembly is stopped.

[0018] Step 4: operating the vertical drive assembly to move the insert assembly upward from the first pressing end position to the first pressing start position;

[0019] Step 5: driving the horizontal driving member to move the insert assembly to the second pressing start position;

[0020] Step 6: Operate the vertical drive assembly to move the insert assembly downward from the second pressing start position to the second pressing end position. During this process, the second pre-pressing working surface of the pre-pressing insert contacts and deforms the outer panel part after the deformation in step 3. When the insert assembly is at the second pressing end position, the outer panel part reaches the second expected deformation, and the vertical drive assembly is stopped.

[0021] Step 7: operating the vertical drive assembly to move the insert assembly upward from the second pressing end position to the second pressing start position; driving the horizontal drive member to move the insert assembly from the second pressing start position to the pre-pressing preparation position;

[0022] Step 8: Operate the vertical drive assembly to move the insert assembly from the pre-pressing preparation position to the final pressing preparation position;

[0023] Step 9: driving the horizontal driving member to move the insert assembly from the final pressing preparation position to the final pressing start position;

[0024] Step 10: The vertical drive assembly is operated to move the insert assembly downward from the final pressing start position to the final pressing end position. During this process, the final pressing working surface of the final pressing insert contacts and deforms the outer panel part after deformation in step 6. When the insert assembly is at the final pressing end position, the outer panel part reaches the final expected deformation, and the vertical drive assembly is stopped.

[0025] Step 11: operating the vertical drive assembly to move the insert assembly upward from the final pressing end position to the final pressing start position; driving the horizontal drive member to move the insert assembly from the final pressing start position to the final pressing preparation position;

[0026] Step 12: Operate the vertical drive assembly to move the insert assembly from the final pressing preparation position to the pre-pressing preparation position.

[0027] The three-step pressing module and method for automobile door covers of the present invention have the following beneficial effects:

[0028] (1) By designing a vertical sliding group on a fixed frame, arranging a horizontal sliding group on the vertical sliding group, designing an insert assembly on the horizontal sliding group, designing final pressing inserts and pre-pressing inserts distributed up and down in the insert assembly, and designing a first pre-pressing working surface and a second pre-pressing working surface on the pre-pressing insert, it is achieved that under the cooperative drive of the vertical sliding group and the horizontal sliding group, the first pre-pressing working surface of the pre-pressing insert, the second pre-pressing working surface of the pre-pressing insert and the final pressing working surface of the final pressing insert are pressed with the parts to be pressed in turn, and the three-step pressing of the parts can be achieved without adding other equipment, with high stability, high precision, high work efficiency and good pressing effect.

[0029] (2) By setting the matching first stop block and the second stop block, the matching third stop block and the fourth stop block, the matching first limit block and the second limit block and the matching third limit block and the fourth limit block, the operation of the vertical sliding group and the horizontal sliding group is limited and positioned, which improves the stability and accuracy of the operation of the module of the present application, helps to protect the insert assembly, and extends the service life of the module of the present application.

[0030] (3) By designing the vertical sliding group as a motor driving the active wheel, the belt driving the driven wheel, and then the screw-nut pair transmission to realize the movement of the insert assembly in the vertical direction, it has the characteristics of simple structure, stable and reliable transmission, strong buffering performance, and strong vibration absorption performance, which can effectively alleviate the impact of the force generated by the pressing process on the equipment; the horizontal sliding group is designed as a driving cylinder to drive the insert assembly to move in the horizontal direction through the guide groove seat and the slide plate. The structure is simple and direct, and the speed is fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To better understand the above and other objects, features, advantages, and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. Like reference numerals in the accompanying drawings refer to like components. Those skilled in the art should understand that the accompanying drawings are intended to schematically illustrate preferred embodiments of the present invention and have no limiting effect on the scope of the present invention. The components in the drawings are not drawn to scale.

[0032] Figure 1 A schematic structural diagram from a first angle of a three-step pressing module for a car door cover according to an embodiment of the present invention is shown;

[0033] Figure 2 A schematic structural diagram from a second angle of a three-step pressing module for a car door cover according to an embodiment of the present invention is shown;

[0034] Figure 3 A schematic structural diagram from a third angle of a three-step pressing module for a car door cover according to an embodiment of the present invention is shown;

[0035] Figure 4 A cross-sectional view of a three-step pressing module for an automobile door cover according to an embodiment of the present invention is shown;

[0036] Figure 5 A simplified structural diagram of a three-step pressing machine for automobile door covers according to an embodiment of the present invention is shown;

[0037] Figure 6 A schematic diagram showing a process of a three-step pressing method for an automobile door cover according to an embodiment of the present invention is shown;

[0038] Figure 7 Shown Figure 6 Partially enlarged views of Figures d, i, and n.

[0039] Description of reference numerals:

[0040] 11. Fixed frame; 111. Dust shield; 112. Travel scale; 121. Vertical movable frame; 1211. Pointer; 122. Motor; 123. Driving wheel; 124. Driven wheel; 125. Belt; 126. Screw; 127. Nut; 128. Guide rail; 129. Slider; 1210. Mounting box; 131. Guide groove seat; 132. Slide plate; 133. Driving cylinder; 134. Connecting seat; 135. Cover plate; 136. Friction plate; 137. Connecting plate; 141. Mounting seat; 14 11. Mounting plate; 1412. Mounting frame; 142. Final pressing insert; 143. Pre-pressing insert; 1431. First pre-pressing working surface; 1432. Second pre-pressing working surface; 151. Stop cylinder; 152. First stop block; 153. Second stop block; 161. Third stop block; 162. Fourth stop block; 171. First limit block; 172. Second limit block; 181. Third limit block; 182. Fourth limit block; 19. Position sensor; 2. Pressing plate; 3. Bottom mold; 4. Base. DETAILED DESCRIPTION

[0041] The following description of exemplary embodiments of the present disclosure is made in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding. These details should be considered as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0042] As used herein, the term "including" and its variations represent open inclusion, i.e., "including but not limited to." Unless otherwise stated, the term "or" means "and / or." The term "based on" means "based at least in part on." The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "first," "second," etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0043] In order to at least partially solve one or more of the above problems and other potential problems, the embodiments of the present disclosure provide a three-step pressing module for automobile door covers, which is used on a three-step pressing machine, such as Figures 1 to 5 As shown, it includes a fixed frame 11, a vertical sliding group, a horizontal sliding group and an insert assembly; the fixed frame 11 is used to be installed on the base 4 of the three-step pressing machine and is fixed in position during the pressing process.

[0044] The vertical sliding group includes a vertical movable frame 121 and a vertical driving assembly; the vertical movable frame 121 is slidably connected to the fixed frame 11 along the vertical direction; the vertical driving assembly is connected between the fixed frame 11 and the vertical movable frame 121, and is used to drive the vertical movable frame 121 to slide relative to the fixed frame 11 along the vertical direction; specifically, the vertical driving assembly includes a motor 122, a driving wheel 123, a driven wheel 124, a belt 125, a screw 126, and a nut 127; the motor 122 adopts a servo variable frequency motor 122 equipped with an absolute encoder, and the motor 122 is fixedly connected to the vertical movable frame 121; the driving wheel 123, the driven wheel 124 The wheel 124 and the belt 125 are both installed in the installation box 1210, the output shaft of the motor 122 passes through the top surface of the installation box 1210, and is coaxially fixedly connected to the driving wheel 123, the driven wheel 124 and the driving wheel 123 are on the same horizontal plane, and the belt 125 is simultaneously sleeved between the driving wheel 123 and the driven wheel 124; the screw 126 is vertically arranged, the bottom end of the screw 126 passes through the top surface of the installation box 1210, and is coaxially fixedly connected to the driven wheel 124, the screw 126 is rotatably connected to the vertical movable frame 121; the nut 127 is sleeved on the screw 126 and is threadedly connected to the screw 126, and the nut 127 is fixedly connected to the fixed frame 11.

[0045] In a preferred embodiment, a sliding assembly is provided between the vertical movable frame 121 and the fixed frame 11. Preferably, two sets of sliding assemblies are provided, each comprising a guide rail 128 and a slider 129. The guide rails 128 in each set of sliding assemblies are vertically arranged and fixedly connected to opposite sides of the vertical movable frame 121. The sliders 129 in each set of sliding assemblies are fixedly connected to opposite locations of the fixed frame 11. The sliders 129 and the guide rails 128 in the same set slide vertically. Preferably, dust shields 111 are fixedly connected to opposite locations of the fixed frame 11. The two dust shields 111 respectively cover the guide rails 128 in each set of sliding assemblies and slide vertically with the corresponding guide rails 128. Preferably, corresponding travel scales 112 and pointers 1211 are provided on the vertical movable frame 121 and the fixed frame 11, respectively, for position correction during mechanism debugging.

[0046] The horizontal sliding group includes a guide groove seat 131, a slide plate 132 and a horizontal driving member; the guide groove seat 131 is horizontally arranged and fixedly connected to the top of the vertical movable frame 121; the slide plate 132 matches the guide groove seat 131, and the slide plate 132 is horizontally arranged in the guide groove seat 131 and is connected to the guide groove seat 131 along the horizontal direction. Preferably, a friction plate 136 is connected between the bottom surface of the guide groove seat 131 and the bottom surface of the slide plate 132, and the top of the two side walls of the guide groove seat 131 are respectively fixedly connected to the horizontally arranged cover plate 1 35, the extension direction of the cover plate 135 is the same as the extension direction of the guide groove seat 131; the horizontal driving member is connected to the slide plate 132, and is used to drive the slide plate 132 to slide horizontally in the guide groove seat 131. Specifically, the horizontal driving member adopts a driving cylinder 133, and the driving cylinder 133 is fixedly connected to the top of the vertical movable frame 121 through the connecting seat 134. A connecting piece 137 is fixedly connected to the bottom surface of the slide plate 132, and the end of the piston rod of the driving cylinder 133 is fixedly connected to the connecting piece 137.

[0047] The insert assembly includes a mounting seat 141, a final pressing insert 142 and a pre-pressing insert 143; the mounting seat 141 is fixedly connected to the first end of the top surface of the slide 132, specifically, the mounting seat 141 includes a mounting plate 1411 and a mounting frame 1412, the bottom surface of the mounting frame 1412 is fixedly connected to the top surface of the slide 132, the mounting plate 1411 is vertically arranged at the first end of the top surface of the slide 132, and the mounting plate 1411 is fixed to the side of the mounting frame 1412. Connection; the final pressing insert 142 and the pre-pressing insert 143 are arranged up and down, and are both fixedly connected to the side of the mounting plate 1411 away from the mounting frame 1412; the bottom end of the pre-pressing insert 143 is provided with a first pre-pressing working surface 1431 and a second pre-pressing working surface 1432, and the inclination of the first pre-pressing working surface 1431 is greater than the inclination of the second pre-pressing working surface 1432; the bottom end of the final pressing insert 142 is provided with a final pressing working surface.

[0048] The horizontal sliding group drives the insert assembly to reciprocate horizontally between the first pressing start position and the pre-pressing preparation position, between the second pressing start position and the pre-pressing and preparation position, and between the final pressing start position and the final pressing preparation position; the vertical sliding group drives the insert assembly to reciprocate vertically between the first pressing start position and the first pressing end position, between the second pressing start position and the second pressing end position, between the final pressing start position and the final pressing end position, and between the pre-pressing preparation position and the final pressing preparation position; when the insert assembly moves from the first pressing start position to the first pressing end position, the part to be pressed contacts the first pre-pressing working surface 1431; when the insert assembly moves from the second pressing start position to the second pressing end position, the part to be pressed contacts the second pre-pressing working surface 1432.

[0049] The module of this application can control the operation of the vertical sliding group and the horizontal sliding group through the control system of the three-step pressing machine, so that the insert assembly is respectively located at the pre-pressing preparation position, the first pressing start position, the first pressing end position, the second pressing start position, the second step pressing end position, the final pressing preparation position, the final pressing start position and the final pressing end position. In a preferred embodiment, the module of this application also includes a first stop assembly, a second stop assembly, a first limiting assembly and a second limiting assembly. The first stop assembly is used to mechanically protect the insert assembly at the first pressing start position and the first pressing end position and the positions therebetween. The second stop assembly is used to mechanically protect the insert assembly at the second pressing start position and the second pressing end position and the positions therebetween, and at the final pressing start position and the final pressing end position and the positions therebetween. The first limiting assembly is used to mechanically protect the insert assembly at the first pressing end position and the second pressing end position and the positions therebetween. The second limiting assembly is used to mechanically protect the insert assembly at the final pressing end position and the final pressing end position.

[0050] Specifically, the first stop assembly includes a stop cylinder 151, a first stop block 152 and a second stop block 153; a through hole is opened on the slide 132; the stop cylinder 151 is fixedly connected to the slide 132, and the piston rod of the stop cylinder 151 is passed through the through hole and moves along the vertical direction, and the first stop block 152 is fixedly connected to the free end of the piston rod of the stop cylinder 151; the second stop block 153 is fixedly connected to the top surface of the guide groove seat 131, and the direction from the first stop block 152 to the second stop block 153 is the same as the sliding direction of the slide 132; when the first stop block 152 is connected to the second stop block 153, the insert assembly is in the first step pressing start position or the first step pressing end position or a position between the first step pressing start position and the first step pressing end position. The second stop assembly includes a third stop block 161 and a fourth stop block 162, which are respectively fixedly connected to both sides of the first end of the guide groove seat 131, and both correspond to the first end of the slide 132, and the distance between the third stop block 161 and the fourth stop block 162 is smaller than the dimension of the slide 132 along a direction perpendicular to its sliding direction; when the two sides of the first end of the slide 132 are respectively connected to the third stop block 161 and the fourth stop block 162, the insert assembly is in the second step pressing start position, or the second step pressing end position, or a position between the second step pressing start position and the second step pressing end position, or the final pressing start position, or the final pressing end position, or a position between the final pressing start position and the final pressing end position.

[0051] The first limiting assembly includes a first limiting block 171 and a second limiting block 172. The first limiting block 171 is fixedly connected to the first end of the bottom surface of the slide 132, and the second limiting block 172 is fixedly connected to the top of the fixed frame 11 or the outer side wall of the bottom mold 3 of the three-step pressing machine; when the insert assembly moves from the first step pressing start position to the first step pressing end position and from the second step pressing start position to the second step pressing end position, the first limiting block 171 is located directly above the second limiting block 172, and when the first limiting block 171 is connected to the second limiting block 172, the insert assembly is at the first step pressing end position or the second step pressing end position. The second limit block includes a third limit block 181 and a fourth limit block 182. The third limit block 181 is fixedly connected to the top of the vertical movable frame 121, and the fourth limit block 182 is fixedly connected to the top of the fixed frame 11. When the insert assembly moves from the final pressing start position to the final pressing end position, the third limit block 181 is located directly above the fourth limit block 182, and when the third limit block 181 is connected to the fourth limit block 182, the insert assembly is in the final pressing end position.

[0052] Preferably, a plurality of position sensors 19 are installed on the guide groove seat 131 for detecting the position of the slide plate 132 relative to the guide groove seat 131 and transmitting signals to the control system of the three-step pressing machine.

[0053] The present application also provides a three-step pressing method for automobile door covers, such as Figure 6 and Figure 7 As shown, a three-step pressing module for a car door cover as described above is used, preferably, the three-step pressing module includes a stop cylinder 151, a first stop block 152, a second stop block 153, a third stop block 161, a fourth stop block 162, a first limit block 171, a second limit block 172, a third limit block 181 and a fourth limit block 182, including the following steps:

[0054] Step 1: Place the outer panel and inner panel on the bottom mold 3. Move the pressing plate 2 to contact the inner panel and apply a pressing force to prevent the inner and outer panel from moving during the subsequent process. At this time, the insert assembly is in the pre-pressing preparation position.

[0055] Preferably, step a is provided between step 1 and step 2, and step a comprises: operating the stop cylinder 151 so that the first stop block 152 extends out of the slide plate 132;

[0056] Step 2: Drive the horizontal driving member to move the insert assembly from the pre-pressing preparation position to the first pressing start position (at this time, the first stop block 152 is connected to the second stop block 153, and the first limit block 171 is located directly above the second limit block 172);

[0057] Step 3: Run the vertical drive assembly to move the insert assembly downward from the first pressing start position to the first pressing end position (at this time, the first stop block 152 is connected to the second stop block 153, and the first limit block 171 is connected to the second limit block 172). During this process, the first pre-pressing working surface 1431 of the pre-pressing insert 143 contacts the outer panel part and causes it to deform. When the insert assembly is in the first pressing end position, the outer panel part reaches the first expected deformation, and the vertical drive assembly is stopped. Figure 7 As shown in Figure A;

[0058] Step 4: operating the vertical drive assembly to move the insert assembly upward from the first pressing end position to the first pressing start position;

[0059] Preferably, step b is provided between step 4 and step 5, and step b comprises: driving the horizontal driving member to move the insert assembly from the first pressing start position to the pre-pressing preparation position; operating the stop cylinder 151 to retract the first stop block 152;

[0060] Step 5: Drive the horizontal drive member to move the insert assembly to the second pressing start position (at this time, both sides of the first end of the slide plate 132 are connected to the third stop block 161 and the fourth stop block 162 respectively, and the first limit block 171 is located directly above the second limit block 172);

[0061] Step 6: Run the vertical drive assembly to move the insert assembly downward from the second pressing start position to the second pressing end position (at this time, the two sides of the first end of the slide 132 are respectively connected to the third stop block 161 and the fourth stop block 162, and the first limit block 171 is connected to the second limit block 172). During this process, the second pre-pressing working surface 1432 of the pre-pressing insert 143 contacts the outer panel part deformed in step 3 and causes it to deform. When the insert assembly is in the second pressing end position, the outer panel part reaches the second expected deformation, and the vertical drive assembly is stopped. Figure 7 As shown in Figure B;

[0062] Step 7: operating the vertical drive assembly to move the insert assembly upward from the second pressing end position to the second pressing start position; driving the horizontal drive member to move the insert assembly from the second pressing start position to the pre-pressing preparation position;

[0063] Step 8: Operate the vertical drive assembly to move the insert assembly from the pre-pressing preparation position to the final pressing preparation position;

[0064] Step 9: Drive the horizontal drive member to move the insert assembly from the final pressing preparation position to the final pressing start position (at this time, both sides of the first end of the slide plate 132 are connected to the third stop block 161 and the fourth stop block 162 respectively, and the third limit block 181 is located directly above the fourth limit block 182);

[0065] Step 10: Run the vertical drive assembly to move the insert assembly downward from the final pressing start position to the final pressing end position (at this time, the two sides of the first end of the slide 132 are respectively connected to the third stop block 161 and the fourth stop block 162, and the third limit block 181 is connected to the fourth limit block 182). During this process, the final pressing working surface of the final pressing insert 142 contacts the outer panel part deformed in step 6 and causes it to deform. When the insert assembly is at the final pressing end position, the outer panel part reaches the final expected deformation, and the vertical drive assembly is stopped. Figure 7 As shown in Figure C;

[0066] Step 11: operating the vertical drive assembly to move the insert assembly upward from the final pressing end position to the final pressing start position; driving the horizontal drive member to move the insert assembly from the final pressing start position to the final pressing preparation position;

[0067] Step 12: Operate the vertical drive assembly to move the insert assembly from the final pressing preparation position to the pre-pressing preparation position.

[0068] While various embodiments of the present disclosure have been described above, the foregoing description is intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand this document.

Claims

1. A three-step pressing module for automobile door covers, used on a three-step pressing machine, characterized by: It comprises a fixed frame (11), a vertical sliding group, a horizontal sliding group and an insert assembly; The position of the fixed frame (11) is fixed; The vertical sliding group includes a vertical movable frame (121) and a vertical driving assembly; the vertical movable frame (121) is connected to the fixed frame (11) in a sliding manner along the vertical direction; the vertical driving assembly is connected between the fixed frame (11) and the vertical movable frame (121) and is used to drive the vertical movable frame (121) to slide relative to the fixed frame (11) along the vertical direction; The horizontal sliding group includes a guide groove seat (131), a slide plate (132) and a horizontal driving member; the guide groove seat (131) is fixed to the top of the vertical movable frame (121); the slide plate (132) is arranged in the guide groove seat (131) and is connected to the guide groove seat (131) in a sliding manner along the horizontal direction; the horizontal driving member is connected to the slide plate (132) and is used to drive the slide plate (132) to slide in the guide groove seat (131) in the horizontal direction; The insert assembly comprises a mounting seat (141), a final pressing insert (142) and a pre-pressing insert (143); the mounting seat (141) is fixedly connected to the first end of the top surface of the slide plate (132); the final pressing insert (142) and the pre-pressing insert (143) are arranged up and down, and are both fixedly connected to the mounting seat (141); a first pre-pressing working surface (1431) and a second pre-pressing working surface (1432) are provided on the bottom end of the pre-pressing insert (143); the inclination of the first pre-pressing working surface (1431) is greater than the inclination of the second pre-pressing working surface (1432); The horizontal sliding group drives the insert assembly to reciprocate horizontally between the first pressing start position and the pre-pressing preparation position, between the second pressing start position and the pre-pressing and preparation position, and between the final pressing start position and the final pressing preparation position; The vertical sliding group drives the insert assembly to reciprocate vertically between the first step pressing start position and the first step pressing end position, between the second step pressing start position and the second step pressing end position, between the final pressing start position and the final pressing end position, and between the pre-pressing preparation position and the final pressing preparation position; when the insert assembly moves from the first step pressing start position to the first step pressing end position, the part to be pressed contacts the first pre-pressing working surface (1431); when the insert assembly moves from the second step pressing start position to the second step pressing end position, the part to be pressed contacts the second pre-pressing working surface (1432).

2. The three-step pressing module for automobile door cover according to claim 1, characterized in that: It also includes a first stop assembly and a second stop assembly. The first stop assembly is used to mechanically protect and limit the insert assembly at the starting position of the first pressing step, the ending position of the first pressing step, and the positions therebetween. The second stop assembly is used to mechanically protect and limit the insert assembly at the starting position of the second pressing step, the ending position of the second pressing step, and the positions therebetween, and the starting position of the final pressing step, the ending position of the final pressing step, and the positions therebetween.

3. The three-step pressing module for automobile door cover according to claim 2, characterized in that: The first stop assembly comprises a stop cylinder (151), a first stop block (152) and a second stop block (153); a through hole is provided on the slide plate (132); the stop cylinder (151) is fixedly connected to the slide plate (132), the piston rod of the stop cylinder (151) is inserted into the through hole and moves in a vertical direction, and the first stop block (152) is fixedly connected to the free end of the piston rod of the stop cylinder (151); the second stop block (153) is fixedly connected to the top surface of the guide groove seat (131), and the direction from the first stop block (152) to the second stop block (153) is the same as the sliding direction of the slide plate (132); when the first stop block (152) is connected to the second stop block (153), the insert assembly is at the first pressing start position or the first pressing end position or a position between the first pressing start position and the first pressing end position.

4. The three-step pressing module for automobile door cover according to claim 2, characterized in that: The second stop assembly includes a third stop block (161) and a fourth stop block (162), the third stop block (161) and the fourth stop block (162) are respectively fixedly connected to the two sides of the first end of the guide groove seat (131), and both correspond to the first end of the slide plate (132), and the distance between the third stop block (161) and the fourth stop block (162) is smaller than the dimension of the slide plate (132) along the direction perpendicular to the sliding direction thereof; when the two sides of the first end of the slide plate (132) are respectively connected to the third stop block (161) and the fourth stop block (162), the insert assembly is at the second step pressing start position, or the second step pressing end position, or a position between the second step pressing start position and the second step pressing end position, or the final pressing start position, or the final pressing end position, or a position between the final pressing start position and the final pressing end position.

5. The three-step pressing module for automobile door cover according to claim 1, characterized in that: It also includes a first limiting assembly and a second limiting assembly. The first limiting assembly is used to mechanically protect and limit the insert assembly at the first step pressing end position and the second step pressing end position; the second limiting assembly is used to mechanically protect and limit the insert assembly at the final pressing end position.

6. The three-step pressing module for automobile door cover according to claim 5, characterized in that: The first limiting assembly comprises a first limiting block (171) and a second limiting block (172), wherein the first limiting block (171) is fixedly connected to the first end of the bottom surface of the slide plate (132), and the second limiting block (172) is fixedly connected to the top of the fixed frame (11) or the outer side wall of the bottom mold (3) of the three-step pressing machine; when the insert assembly moves from the first step pressing start position to the first step pressing end position and from the second step pressing start position to the second step pressing end position, the first limiting block (171) is located directly above the second limiting block (172), and when the first limiting block (171) is connected to the second limiting block (172), the insert assembly is at the first step pressing end position or the second step pressing end position.

7. The three-step pressing module for automobile door cover according to claim 5, characterized in that: The second limiting assembly comprises a third limiting block (181) and a fourth limiting block (182), wherein the third limiting block (181) is fixedly connected to the top of the vertical movable frame (121), and the fourth limiting block (182) is fixedly connected to the top of the fixed frame (11); when the insert assembly moves from the final pressing start position to the final pressing end position, the third limiting block (181) is located directly above the fourth limiting block (182), and when the third limiting block (181) is connected to the fourth limiting block (182), the insert assembly is at the final pressing end position.

8. The three-step pressing module for automobile door cover according to claim 1, characterized in that: A plurality of position sensors (19) are installed on the guide groove seat (131) for detecting the position of the slide plate (132) relative to the guide groove seat (131) and transmitting signals to the control system of the three-step pressing machine.

9. The three-step pressing module for automobile door cover according to claim 1, characterized in that: The vertical drive assembly comprises a motor (122), a driving wheel (123), a driven wheel (124), a belt (125), a lead screw (126), and a nut (127); the motor (122) is fixedly connected to the vertical movable frame (121); the driving wheel (123) is coaxially fixedly connected to the output shaft of the motor (122); the driven wheel (124) and the driving wheel (123) are on the same horizontal plane; the belt (125) is simultaneously sleeved between the driving wheel (123) and the driven wheel (124); the lead screw (126) is vertically arranged, the lead screw (126) is rotationally connected to the vertical movable frame (121), and the driven wheel (124) is coaxially fixedly connected to the lead screw (126); the nut (127) is sleeved on the lead screw (126) and threadedly connected to the lead screw (126); and the nut (127) is fixedly connected to the fixed frame (11).

10. A three-step pressing method for automobile door covers, using the three-step pressing module for automobile door covers according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Place the outer panel part and the inner panel part on the bottom mold (3), and move the pressing plate (2) to contact the inner panel part and apply a pressing force. At this time, the insert assembly is in a pre-pressing preparation position; Step 2: driving the horizontal driving member to move the insert assembly from the pre-pressing preparation position to the first pressing start position; Step 3: operating the vertical drive assembly so that the insert assembly moves downward from the first pressing start position to the first pressing end position, during which the first pre-pressing working surface (1431) of the pre-pressing insert (143) contacts the outer panel part and causes it to deform, and when the insert assembly is at the first pressing end position, the outer panel part reaches the first expected deformation, and the vertical drive assembly stops operating; Step 4: operating the vertical drive assembly to move the insert assembly upward from the first pressing end position to the first pressing start position; Step 5: driving the horizontal driving member to move the insert assembly to the second pressing start position; Step 6: operating the vertical drive assembly so that the insert assembly moves downward from the second pressing start position to the second pressing end position. During this process, the second pre-pressing working surface (1432) of the pre-pressing insert (143) contacts the outer panel part deformed in step 3 and causes it to deform. When the insert assembly is at the second pressing end position, the outer panel part reaches the second expected deformation, and the vertical drive assembly is stopped. Step 7: operating the vertical drive assembly to move the insert assembly upward from the second pressing end position to the second pressing start position; driving the horizontal drive member to move the insert assembly from the second pressing start position to the pre-pressing preparation position; Step 8: Operate the vertical drive assembly to move the insert assembly from the pre-pressing preparation position to the final pressing preparation position; Step 9: driving the horizontal driving member to move the insert assembly from the final pressing preparation position to the final pressing start position; Step 10: operating the vertical drive assembly so that the insert assembly moves downward from the final pressing start position to the final pressing end position. During this process, the final pressing working surface of the final pressing insert (142) contacts the outer panel part deformed in step 6 and causes it to deform. When the insert assembly is at the final pressing end position, the outer panel part reaches the final expected deformation, and the vertical drive assembly is stopped. Step 11: operating the vertical drive assembly to move the insert assembly upward from the final pressing end position to the final pressing start position; Driving the horizontal driving member to move the insert assembly from the final pressing start position to the final pressing preparation position; Step 12: Operate the vertical drive assembly to move the insert assembly from the final pressing preparation position to the pre-pressing preparation position.

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