A double-station skirt automatic forming machine and forming method

Abstract

The present invention relates to a dual-station automatic skirt forming machine, comprising a frame, processing stations disposed on both sides of the frame, an oven disposed on the frame that can slide between the processing stations on both sides, symmetrically disposed sliding seats that can slide, a connecting seat rotatably connected to the sliding seat, a connecting plate disposed between the connecting seats on both sides, a plurality of connecting plates that are connected to each other, adjacent connecting plates that are rotatably connected to each other, and a spring disposed between adjacent connecting plates, a placement area formed between the connecting plates and the connecting seats, a clamping device disposed on the placement area for clamping a thermoplastic plate, a skirt mold that can be lifted below the placement area, and a pressure device disposed above the placement area for applying pressure to the thermoplastic plate after the skirt mold is lifted. The present invention has the following advantages and effects: pressure can be applied to the thermoplastic plate during the process of the skirt mold lifting the thermoplastic plate, thereby automatically discharging air between the thermoplastic plate and the skirt mold, thereby improving the convenience of operation.

Description

Technical Field

[0001] The present invention relates to the technical field of skirt forming equipment, and in particular to a double-station skirt automatic forming machine and a forming method. Background Art

[0002] The skirt forming machine is a forming equipment that uses the vacuum forming process to heat the thermoplastic plate, and then lifts the thermoplastic plate upward through the mold so that the thermoplastic plate can be adsorbed on the mold. After cooling, it can be processed into a curved skirt plate.

[0003] At present, in order to ensure that the thermoplastic plate can fully absorb the mold, workers need to rotate the pressing frame to press the thermoplastic plate absorbed on the mold to squeeze out the excess air between the thermoplastic plate and the mold, thereby ensuring the final molding quality of the skirt plate. Therefore, after the mold lifts the thermoplastic plate, the worker needs to rotate the pressing frame so that the pressing frame and the thermoplastic plate are fitted together, and then repeatedly press the pressing frame to ensure that the air between the mold and the thermoplastic plate is squeezed out. Therefore, there are certain inconveniences during the operation. Summary of the Invention

[0004] To address the shortcomings of the existing technology, the present invention aims to provide a dual-station automatic skirt forming machine that applies pressure to the thermoplastic sheet as the skirt mold lifts it, automatically venting air between the sheet and the skirt mold, thereby improving operational convenience. Another object of the present invention is to provide a dual-station skirt forming method that improves forming efficiency.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a double-station skirt automatic forming machine, comprising a frame, processing stations are provided on both sides of the frame, an oven is provided on the frame that can slide between the processing stations on both sides, a sliding seat is symmetrically provided in the processing station, a connecting seat is rotatably connected to the sliding seat, a connecting plate is provided between the connecting seats on both sides, the connecting plates are multiple and connected to each other, adjacent connecting plates are rotatably connected to each other, and spring sheets for applying pressure are detachably connected between adjacent connecting plates, a placement area for placing thermoplastic plates is formed between the connecting plates and the connecting seat, a plurality of clamping devices arranged around the placement area are provided on the placement area, the clamping device is used to clamp the thermoplastic plate, a skirt mold that can be lifted is provided below the placement area, and a pressure device for applying pressure to the thermoplastic plate after the skirt mold is lifted is provided above the placement area.

[0006] The present invention is further configured as follows: an outwardly offset coupling portion is provided on the periphery of the skirt mold; a coupling wheel is rotatably connected to the bottom of the connecting plate; the coupling portion can be coupled to the coupling wheel to drive relative rotation between adjacent connecting plates.

[0007] The present invention is further configured as follows: the pressure device includes a pressure cylinder, the pressure cylinder is fixed to the frame, the output end of the pressure cylinder is fixed with a pressure frame seat, the pressure frame seat is connected to the pressure frame, and the pressure frame is opposite to the coupling part.

[0008] The present invention is further configured as follows: the spring sheet includes an elastic part and connecting parts located on both sides of the elastic part, the connecting plate is provided with an embedding groove adapted to the connecting part, the embedding groove is provided with a first locking hole, the connecting part is provided with a second locking hole opposite to the first locking hole, a bracket is fixed to the connecting plate, a first guide cavity is provided at the center of the bracket, a slidable transmission rod is provided in the first guide cavity, second guide cavities opposite to the embedding groove are provided on both sides of the bracket, an extension rod extending toward the embedding groove is provided on the outer periphery of the transmission rod, a locking rod is fixed on the extension rod, the locking rod can slide in the second guide cavity, and the locking rod can be inserted into the first locking hole and the second locking hole to form a limit fit between the connecting plate and the connecting part.

[0009] The present invention is further configured as follows: a first guide flange is fixedly mounted on the outer periphery of the transmission rod, the first guide flange is adapted to the first guide cavity, a first spring is provided between the first guide flange and the first guide cavity, and a second guide flange is fixedly mounted on the outer periphery of the locking rod, the second guide flange is adapted to the second guide cavity, and a second spring is provided between the second guide flange and the second guide cavity.

[0010] The present invention is further configured as follows: the extension rod is sleeved on the transmission rod, the bracket is provided with a clearance hole connected to the second guide cavity, the clearance hole includes a vertical part and a horizontal part, and the first guide flange is provided with a detachable positioning rod, and the positioning rod can slide in the clearance hole.

[0011] The present invention is further configured as follows: a transmission gear is rotatably connected to the machine body, a transmission chain is sleeved between the transmission gears on both sides, the transmission chain is meshed with the transmission gear, a contact rod extending toward the transmission chain is provided on the outside of the oven, and pushing blocks are symmetrically fixed on the transmission chain, the pushing blocks are located on both sides of the contact rod, the pushing blocks include a mounting portion and a pushing portion, a mounting groove with a notch facing the contact rod is provided in the mounting portion, a guide groove connected to the mounting groove is provided on the inner wall of the mounting portion, a guide block adapted to the guide groove is provided on the outer wall of the pushing portion, the guide block is adapted to the guide groove and can constitute a guiding fit between the two, a pressure spring is connected between the pushing portion and the mounting groove, and the pushing portion is provided with a contact arc groove on the side facing the contact rod.

[0012] The present invention is further configured as follows: the clamping device includes a driving cylinder, the output end of the driving cylinder is rotatably connected to a driving rod, the driving rod is located at one end away from the driving cylinder and extends toward the placement area and is connected to a clamping pressure plate, a base is fixed on the driving cylinder, a pull rod is provided between the base and the driving rod, one end of the pull rod is rotatably connected to the base, and the other end is rotatably connected to the driving rod.

[0013] Another object of the present invention is to provide a double-station skirt forming method, comprising the following steps:

[0014] S1 places the thermoplastic plate into the placement area of ​​the processing station;

[0015] S2 clamps the thermoplastic plate by a clamping device;

[0016] S3 moves the oven to a position vertically opposite to the thermoplastic plate, and heats and softens the thermoplastic plate with the oven;

[0017] S4 After the thermoplastic sheet is fully softened, repeat steps S1 to S3 for another processing station, and move the oven to a position vertically opposite to the thermoplastic sheet in another placement area;

[0018] S5 lifts the skirt mold below the heated and softened thermoplastic plate, driving the heated thermoplastic plate to be adsorbed on the skirt mold;

[0019] S6: The pressure applying device applies pressure to the thermoplastic plate lifted by the skirt mold until the skirt is formed on the thermoplastic plate;

[0020] S7 The pressure device is reset, and the clamping device releases the thermoplastic plate. Then, a worker takes the thermoplastic plate with the skirt formed from the placement area.

[0021] S8 repeats steps S5 to S7 to complete the skirt molding of the thermoplastic plate in another placement area, and then loops back to step S1.

[0022] By adopting the above-mentioned skirt forming method, the efficiency of skirt forming of thermoplastic plates can be improved.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] Since a plurality of connecting plates are arranged which are interconnected and rotatable with each other, and a plurality of interconnected connecting plates are connected to a slidable sliding seat through a connecting seat, when the skirt mold is lifted and the heated thermoplastic plate is adsorbed on the skirt mold, the connecting plates can be driven to rotate, so that the curvature between the interconnected connecting plates is adapted to the curvature of the skirt mold, thereby facilitating that the thermoplastic plate can fit the skirt mold, and when the adjacent connecting plates are driven to rotate, the spring sheet can be deformed, and the force generated by the deformation of the spring sheet can act on the thermoplastic plate, thereby enabling the thermoplastic plate to be deformed. After the plate is adsorbed on the skirt mold, pressure is applied to the thermoplastic plate. In addition, through the provided pressure-applying device, pressure can be further applied to the thermoplastic plate after the thermoplastic plate is adsorbed on the skirt mold, thereby effectively discharging the air between the skirt mold and the thermoplastic plate. Therefore, the technical problem of the prior art requiring manual operation to discharge the air between the skirt mold and the thermoplastic plate is effectively solved, thereby realizing automatic discharge of the air between the thermoplastic plate and the skirt mold, improving the convenience of operation, and ensuring that the thermoplastic plate and the skirt mold can be closely fitted to ensure the final molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the top view of the structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the longitudinal cross-sectional structure of the present invention;

[0028] Figure 4 Schematic diagram of the installation structure of the connection between the spring sheet and the connecting plate in the present invention (1);

[0029] Figure 5 Schematic diagram of the installation structure of the connection between the spring sheet and the connecting plate in the present invention (II);

[0030] Figure 6 This is a schematic diagram of the internal structure of the connection between the spring sheet and the connecting plate in the present invention;

[0031] Figure 7 A schematic diagram of a connection structure for connecting adjacent connecting plates in the present invention;

[0032] Figure 8 It is a structural schematic diagram of the clamping device of the present invention when it is released;

[0033] Figure 9 It is a schematic diagram of the local structure of the oven that is driven to move in the present invention. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] like Figures 1 to 9 As shown, the present invention discloses a double-station skirt automatic forming machine, comprising a frame 1, processing stations are provided on both sides of the frame 1, an oven 2 that can slide between the processing stations on both sides is provided on the frame 1, a slidable sliding seat 3 is symmetrically provided in the processing station, a connecting seat 4 is rotatably connected to the sliding seat 3, a connecting plate 5 is provided between the connecting seats 4 on both sides, the connecting plates 5 are multiple and connected to each other, adjacent connecting plates 5 are rotatably connected to each other, and spring sheets 6 for applying pressure are detachably connected between adjacent connecting plates 5, a placement area for placing a thermoplastic plate 200 is formed between the connecting plate 5 and the connecting seat 4, a plurality of clamping devices 7 arranged around the placement area are provided on the placement area, the clamping device 7 is used to clamp the thermoplastic plate 200, a skirt mold 8 that can be lifted is provided below the placement area, and a pressure device for applying pressure to the thermoplastic plate 200 after the skirt mold 8 is lifted is provided above the placement area;

[0037] When the skirt mold 8 is lifted and the heated thermoplastic plate 200 is adsorbed on the skirt mold 8, the connecting plates 5 can be driven to rotate, so that the curvature of the interconnected connecting plates 5 is adapted to the curvature of the skirt mold 8, thereby facilitating the thermoplastic plate 200 to fit the skirt mold 8. Since the multiple interconnected connecting plates 5 are connected to the slidable sliding seat 3 through the connecting seat 4, when the connecting plates 5 rotate accordingly, the sliding seat 3 can slide, so that the curvature of the connecting plates 5 is adapted to the curvature of the skirt mold 8. The sliding structure of the sliding seat 3 mainly adopts the form of a slider and a slide rail.

[0038] Moreover, when driving the adjacent connecting plates 5 to rotate, the spring sheet 6 can be deformed, and the force generated by the deformation of the spring sheet 6 can act on the thermoplastic plate 200, so that pressure can be applied to the thermoplastic plate 200 after the thermoplastic plate 200 is adsorbed on the skirt mold 8. In addition, through the provided pressure-applying device, the thermoplastic plate 200 can be further pressurized after the thermoplastic plate 200 is adsorbed on the skirt mold 8, so that the air between the skirt mold 8 and the thermoplastic plate 200 can be effectively discharged, thereby realizing the automatic discharge of the air between the thermoplastic plate 200 and the skirt mold 8, improving the convenience of operation, and ensuring that the thermoplastic plate 200 and the skirt mold 8 can be closely fitted to ensure the final molding quality.

[0039] In this embodiment, a coupling portion 81 offset outward is provided on the outer periphery of the skirt mold 8, and a coupling wheel 51 is rotatably connected to the bottom of the connecting plate 5. The coupling portion 81 can be coupled with the coupling wheel 51 to drive relative rotation between adjacent connecting plates 5. Through the arrangement of the coupling portion 81 and the coupling wheel 51, during the lifting of the skirt mold 8, the coupling portion 81 can push the coupling wheel 51 to cause rotation between adjacent connecting plates 5, so that the curvature formed between the interconnected connecting plates 5 is adapted to the curvature of the skirt mold 8, and the friction generated by the contact between the coupling portion 81 and the coupling wheel 51 is rolling friction, thereby reducing the friction suffered by the skirt mold 8 when the connecting plate 5 rotates as the skirt mold 8 is lifted.

[0040] In this embodiment, the specific structure of the pressure device includes a pressure cylinder 91, which is fixed to the frame 1. A pressure frame 93 seat 92 is fixed to the output end of the pressure cylinder 91. The pressure frame 93 seat 92 is connected to the pressure frame 93. The pressure frame 93 is opposite to the coupling portion 81. When pressure is applied to the thermoplastic plate 200 after the skirt mold 8 is lifted, the pressure cylinder 91 drives the pressure frame 93 to descend, so that the pressure frame 93 can press against the coupling portion 81 to further expel the air between the skirt mold 8 and the thermoplastic plate 200. In addition, the pressure frame 93 is opposite to the coupling portion 81, so as not to affect the adhesion of the thermoplastic plate 200 to the skirt mold 8.

[0041] In addition, the pressure frame 93 is connected to the pressure frame 93 seat 92 through a suspension rod 94. The inner wall of the pressure frame 93 seat 92 is fixed with a mounting plate 95. The mounting plates 95 are multiple and spaced apart from each other. The mounting plate 95 is provided with a limit opening 951 for the suspension rod 94 to pass through. The limit opening 951 is adapted to the suspension rod 94 so that the suspension rod 94 can be coupled with the limit opening 951. The inner wall of the pressure frame 93 seat 92 is rotatably connected to an adjusting screw 96. The outer periphery of the adjusting screw 96 is fixed with an adjusting seat 97. One side of the suspension rod 94 One end is connected to the adjustment seat 97, and the other end is connected to the pressure frame 93. Therefore, the adjusting screw 96 is driven to rotate by the corresponding motor, so that the adjusting seat 97, which is sleeved on the outer periphery of the adjusting screw 96 and forms a threaded fit with the adjusting screw 96, can move along the direction of the adjusting screw 96 under the limiting action formed between the limiting mouth 951 and the suspension rod 94. In this way, the position of the pressure frame 93 connected to the pressure frame 93 seat 92 through the suspension rod 94 can be adjusted, so that the pressure frame 93 can be opposite to the coupling part 81.

[0042] In this embodiment, the specific structure of the spring sheet 6 includes an elastic portion 61 and a connecting portion 62 located on both sides of the elastic portion 61. A bezel 52 adapted to the connecting portion 62 is provided on the connecting plate 5. The bezel 52 is provided to position the spring sheet 6 when it is installed, so as to facilitate the installation of the spring sheet 6. A first locking hole 53 is provided in the bezel 52, and a second locking hole 621 opposite to the first locking hole 53 is provided on the connecting portion 62. A bracket 10 is fixed to the connecting plate 5. A first guide cavity 101 is provided in the center of the bracket 10. A slidable transmission rod 11 is provided in the first guide cavity 101. Second guide cavities 102 opposite to the bezel 52 are provided on both sides of the bracket 10. An extension rod 12 extending toward the bezel 52 is provided on the outer periphery of the transmission rod 11. A locking rod 13 is fixed and can slide in the second guide cavity 102. The locking rod 13 can be inserted into the first locking hole 53 and the second locking hole 621 to form a limited fit between the connecting plate 5 and the connecting portion 62. Since a spring piece 6 is provided between adjacent connecting plates 5, an extension rod 12 extending toward the embedding groove 52 is provided on the outer periphery of the transmission rod 11. The locking rods 13 on both sides can be moved synchronously by sliding the transmission rod 11, so that the locking rods 13 on both sides can be synchronously inserted into the first locking hole 53 and the second locking hole 621 or removed from the first locking hole 53 and the second locking hole 621, thereby improving the replacement efficiency of the spring piece 6 and ensuring that the spring piece 6 has sufficient elasticity during long-term use;

[0043] In addition, a first guide flange 111 is further fixed on the outer periphery of the transmission rod 11, and the first guide flange 111 is adapted to the first guide cavity 101, and a first spring 112 is provided between the first guide flange 111 and the first guide cavity 101. A second guide flange 131 is fixed on the outer periphery of the lock rod 13, and the second guide flange 131 is adapted to the second guide cavity 102, and a second spring 132 is provided between the second guide flange 131 and the second guide cavity 102. When replacing the spring sheet 6, by pulling the transmission rod 11 upward, due to the setting of the first guide flange 111, the sliding of the transmission rod 11 in the first guide cavity 101 can be guided, thereby ensuring the sliding stability of the transmission rod 11. The sliding movement can squeeze the first spring 112, and the locking rod 13 can slide upward as the transmission rod 11 slides upward and squeeze the second spring 132, and the setting of the second guide flange 131 can guide the sliding of the locking rod 13 in the second guide cavity 102, thereby ensuring the sliding stability of the locking rod 13. After the connecting portion 62 is installed in the embedded groove 52, by releasing the transmission rod 11, the elastic force generated by the compressed first spring 112 and the second spring 132 can act on the locking rod 13, so that the locking rod 13 can be stably inserted into the first lock hole and the second lock hole, thereby ensuring the installation stability of the spring piece 6 and preventing the spring piece 6 from falling off when the adjacent connecting plates 5 rotate relative to each other.

[0044] Furthermore, the extension rod 12 is sleeved on the transmission rod 11, and a clearance hole 103 communicating with the second guide cavity 102 is provided on the bracket 10. The clearance hole 103 includes a vertical portion 103a and a horizontal portion 103b. A detachable positioning rod 19 is provided on the first guide flange 111, that is, a threaded connection is provided to facilitate the assembly between the transmission rod 11 and the first guide cavity 101. The positioning rod 19 can slide in the clearance hole 103, so when replacing the spring sheet 6, the transmission rod 11 can be detached by sliding it upward. , so that after the locking rod 13 is disengaged from the first insertion hole and the second insertion hole, the positioning rod 19 can slide into the horizontal portion 103b by rotating the transmission rod 11, thereby locking the position of the transmission rod 11. When replacing the spring sheet 6, there is no need to manually apply force to the transmission rod 11, thereby improving the convenience of replacing the spring sheet 6. The extension rod 12 is sleeved on the transmission rod 11, so when the transmission rod 11 is rotated, the transmission rod 11 and the extension rod 12 can rotate relative to each other to avoid interference.

[0045] In this embodiment, the specific structure of driving the oven 2 to move is that a transmission gear 14 is rotatably connected to the body, a transmission chain 15 is sleeved between the transmission gears 14 on both sides, the transmission chain 15 is meshed with the transmission gear 14, and a contact rod 16 extending toward the transmission chain 15 is provided on the outside of the oven 2. Pushing blocks 17 are symmetrically fixed on the transmission chain 15. The pushing blocks 17 are located on both sides of the contact rod 16. The pushing blocks 17 include a mounting portion 171 and a pushing portion 172. The mounting portion 171 is provided with a mounting groove 171a with a notch facing the contact rod 16. The inner wall of the mounting portion 171 is provided with a guide connected to the mounting groove 171a. The outer wall of the pushing portion 172 is provided with a guide block 172a adapted to the guide groove 171b, and the guide block 172a is adapted to the guide groove 171b and can constitute a guiding fit between the two. A pressure spring 18 is connected between the pushing portion 172 and the mounting groove 171a. The pushing portion 172 is provided with a contact arc groove on the side facing the contact rod 16. When the oven 2 needs to be driven to move, the transmission gear 14 is rotated by the corresponding motor to drive the transmission chain 15 to rotate. During the rotation of the transmission chain 15, the contact arc groove of the pushing portion 172 on one side can be coupled with the contact rod 16. The drive chain 15 drives the mounting portion 171 to move toward the pushing portion 172 to compress the pressure spring 18. The force generated by the deformation of the pressure spring 18 can act on the contact rod 16, so that the contact rod 16 can be subjected to sufficient positive pressure, thereby increasing the friction between the pushing portion 172 and the contact rod 16, ensuring the stability of the pushing block 17 in pushing the oven 2 to move, and the arrangement in the contact arc groove can increase the contact area between the pushing portion 172 and the contact rod 16, thereby further improving the stability of the pushing block 17 in pushing the oven 2 to move. When pushing the oven 2 to move, the contact rod 16 The pulley 161 connected to the end of 16 is capable of sliding in a guide rail 162 mounted on the frame 1, thereby guiding the movement of the oven 2. Similarly, when it is necessary to drive the oven 2 to move in the opposite direction, by driving the transmission gear 14 to reverse, the push block 17 on the other side can contact the contact rod 16, thereby driving the oven 2 to move. In this way, the oven 2 can slide between the two processing stations to heat the thermoplastic plates 200 in the two processing stations, thereby improving the overall production efficiency. The oven 2 adopts the existing technology, so its specific structure and principle are not described in detail.

[0046] In this embodiment, the specific structure of the clamping device 7 includes a driving cylinder 71, the output end of the driving cylinder 71 is rotatably connected to the driving rod 72, the driving rod 72 is located at one end away from the driving cylinder 71 and extends toward the placement area and is connected to the clamping plate 73, a base 74 is fixed on the driving cylinder 71, a pull rod 75 is provided between the base 74 and the driving rod 72, one end of the pull rod 75 is rotatably connected to the base 74, and the other end is rotatably connected to the driving rod 72. After the thermoplastic plate 200 is placed in the placement area, the output end of the driving cylinder 71 is controlled to extend, and under the action of the pull rod 75, it can The driving rod 72 is driven to rotate toward the placement area, so that the clamping pressure plate 73 can be pressed against the thermoplastic plate 200 in the placement area, preventing the thermoplastic plate 200 from being offset when the thermoplastic plate 200 is adsorbed on the skirt mold 8. When the thermoplastic plate 200 needs to be placed in the placement area, the output end of the driving cylinder 71 is controlled to reset, and the driving rod 72 can be driven to rotate in a direction away from the placement area under the action of the pull rod 75, so that the clamping pressure plate 73 can be away from the placement area, preventing the clamping pressure plate 73 from interfering when the thermoplastic plate 200 is placed in the placement area, thereby facilitating the placement of the thermoplastic plate 200.

[0047] The operating principle of the present invention is as follows:

[0048] First, the thermoplastic plates 200 are placed in the placement areas on both sides respectively. Then, the driving cylinder 71 drives the clamping plate 73 to rotate toward the placement area to clamp the thermoplastic plates 200 in the placement area. At this time, the corresponding motor drives the transmission gear 14 to rotate, so that the transmission chain 15 can drive the pushing part 172 to move to push the oven 2 to a position vertically opposite to the thermoplastic plates 200 in the placement area. Then, the oven 2 heats and softens the thermoplastic plates 200. There is a distance between the oven 2 and the thermoplastic plates 200. Due to the low melting point of the thermoplastic plates 200, In this way, the distance between the oven 2 and the thermoplastic plate 200 can fully soften the thermoplastic plate 200 through heat conduction, and can prevent the installation structure of the clamping device 7 and the spring sheet 6 from interfering with the movement of the oven 2. After the thermoplastic plate 200 is heated for a certain period of time, the oven 2 is moved by the corresponding motor to a position vertically opposite to the thermoplastic plate 200 in the other placement area. At this time, the lower skirt mold 8, which has been heated and softened, is lifted, driving the heated thermoplastic plate 200 to be adsorbed on the skirt mold 8. At this time, the pressure cylinder 91 can drive the pressing frame 93 to move downward. The thermoplastic plate 200 after the skirt mold 8 is lifted is pressed to further expel the air between the skirt mold 8 and the thermoplastic plate 200. After the thermoplastic plate 200 is formed, the pressure cylinder 91 drives the pressing frame 93 to reset, and the driving cylinder 71 drives the pressing plate to rotate in a direction away from the placement area to release the thermoplastic plate 200 in the placement area. At this time, the worker can take the formed thermoplastic plate 200 out of the placement area, and then the oven 2 can heat and soften the thermoplastic plate 200 on the other side to complete the forming of the thermoplastic plate 200 on the other side. It is clear that the driving cylinder 71, the pressure cylinder 91 and other actuators are all controlled by a PLC controller. For example, the driving cylinder 71 is externally connected to a switch, which is electrically connected to the PLC controller. In this way, after pressing the switch, the corresponding control signal can be transmitted to the PLC controller. After receiving the signal, the PLC controller can drive the driving cylinder 71 to perform corresponding actions, thereby realizing automatic control of the driving cylinder 71. These are all conventional technical means in the field of electrical automation control technology, so their specific principles and structures will not be elaborated on here.

[0049] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A double-station skirt automatic forming machine, characterized in that: Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. The swing arm is in the swing position, and the hook portion can be adjusted according to the situation of the swing arm.

2. A double-station skirt automatic forming machine according to claim 1, characterized in that: The outer periphery of the skirt mold is provided with a coupling portion offset outward, and the bottom of the connecting plate is rotatably connected to a coupling wheel. The coupling portion can be coupled with the coupling wheel to drive relative rotation between adjacent connecting plates.

3. A double-station skirt automatic forming machine according to claim 2, characterized in that: The pressure device includes a pressure cylinder, which is fixed to the frame. A pressure frame seat is fixed to the output end of the pressure cylinder. The pressure frame seat is connected to the pressure frame, and the pressure frame is opposite to the coupling part.

4. The double-station skirt automatic forming machine according to claim 1, characterized in that: The spring sheet includes an elastic part and connecting parts located on both sides of the elastic part, the connecting plate is provided with an embedding groove adapted to the connecting part, the embedding groove is provided with a first locking hole, the connecting part is provided with a second locking hole opposite to the first locking hole, a bracket is fixed to the connecting plate, a first guide cavity is provided at the center of the bracket, a slidable transmission rod is provided in the first guide cavity, second guide cavities opposite to the embedding groove are provided on both sides of the bracket, an extension rod extending toward the embedding groove is provided on the outer periphery of the transmission rod, a locking rod is fixed on the extension rod, the locking rod can slide in the second guide cavity, and the locking rod can be inserted into the first locking hole and the second locking hole to form a limit fit between the connecting plate and the connecting part.

5. The double-station skirt automatic forming machine according to claim 4, characterized in that: A first guide flange is fixedly mounted on the periphery of the transmission rod, the first guide flange is adapted to the first guide cavity, a first spring is provided between the first guide flange and the first guide cavity, a second guide flange is fixedly mounted on the periphery of the locking rod, the second guide flange is adapted to the second guide cavity, a second spring is provided between the second guide flange and the second guide cavity.

6. A double-station skirt automatic forming machine according to claim 4 or 5, characterized in that: The extension rod is sleeved on the transmission rod, and the bracket is provided with a clearance hole connected to the second guide cavity. The clearance hole includes a vertical part and a horizontal part. The first guide flange is provided with a detachable positioning rod, and the positioning rod can slide in the clearance hole.

7. The double-station skirt automatic forming machine according to claim 1, characterized in that: A transmission gear is rotatably connected to the frame, and a transmission chain is provided between the transmission gears on both sides. The transmission chain is meshed with the transmission gear. A contact rod extending toward the transmission chain is provided on the outside of the oven. Push blocks are symmetrically fixed on the transmission chain. The push blocks are located on both sides of the contact rod. The push blocks include a mounting portion and a pushing portion. A mounting groove with a notch facing the contact rod is provided in the mounting portion. A guide groove connected to the mounting groove is provided on the inner wall of the mounting portion. A guide block adapted to the guide groove is provided on the outer wall of the pushing portion. The guide block is adapted to the guide groove and can constitute a guiding fit between the two. A pressure spring is connected between the pushing portion and the mounting groove, and the pushing portion is provided with a contact arc groove on the side facing the contact rod.

8. The double-station skirt automatic forming machine according to claim 1, characterized in that: The clamping device includes a driving cylinder, the output end of the driving cylinder is rotatably connected to a driving rod, the driving rod is located at one end away from the driving cylinder and extends toward the placement area and is connected to a clamping pressure plate, a base is fixed on the driving cylinder, and a pull rod is provided between the base and the driving rod, one end of the pull rod is rotatably connected to the base, and the other end is rotatably connected to the driving rod.

9. A double-station skirt forming method, characterized in that: The double-station skirt automatic forming machine according to any one of claims 1 to 8 comprises the following steps: S1 places the thermoplastic plate into the placement area of ​​the processing station; S2 clamps the thermoplastic plate by a clamping device; S3 moves the oven to a position vertically opposite to the thermoplastic plate, and heats and softens the thermoplastic plate with the oven; S4 After the thermoplastic sheet is fully softened, repeat steps S1 to S3 for another processing station, and move the oven to a position vertically opposite to the thermoplastic sheet in another placement area; S5 lifts the skirt mold below the heated and softened thermoplastic plate, driving the heated thermoplastic plate to be adsorbed on the skirt mold; S6: The pressure applying device applies pressure to the thermoplastic plate lifted by the skirt mold until the skirt is formed on the thermoplastic plate; S7 The pressure device is reset, and the clamping device releases the thermoplastic plate. Then, a worker takes the thermoplastic plate with the skirt formed from the placement area. S8 repeats steps S5 to S7 to complete the skirt molding of the thermoplastic plate in another placement area, and then loops back to step S1.

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