Stretch bending machine

Abstract

The invention relates to a stretch bending machine which comprises a main platform, bending arms, a mold platform, a control screen, an execution arm mounting table and a stretch bending execution arm, the two bending arms capable of horizontally sliding are symmetrically mounted on the main platform, and the execution arm mounting table is slidably mounted on the bending arms; a stretch bending execution arm is installed in the execution arm installation table in an up-down moving mode, a mold platform is installed in the middle of the upper end face of the main platform, and a control screen is installed on the right portion of the front side of the main platform. The bending device has the advantages of being simple in structure, ensuring the structural strength of the bending structure, reducing the overall size of equipment, facilitating equipment transportation, equipment storage and maintenance and the like.

Description

Technical Field

[0001] The invention relates to the technical field of stretch-bending machines, in particular to a stretch-bending machine. Background Art

[0002] Stretch-bending machines are usually able to perform multi-angle bending operations on strip products, and the bending operations usually include X-axis, Y-axis and Z-axis bending. Old-style stretch-bending machines usually use oil cylinders or air cylinders to bend the bending arms. This structure requires a large space to ensure the normal operation of the oil cylinders or air cylinders. This old-style stretch-bending machine structure is too bloated, which is not conducive to equipment transportation, storage and maintenance. In order to solve the above problems, the equipment needs to be improved and the overall size of the equipment needs to be reduced. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a stretch-bending machine, which has the characteristics of simplified structure, ensuring the structural strength of the stretch-bending structure, reducing the overall volume of the equipment, facilitating equipment transportation, storage and maintenance.

[0004] The technical solution adopted by the present invention to solve the technical problem is: to provide a stretch bending machine, including a main platform, a bending arm, a mold platform, a control screen, an execution arm mounting platform and a stretch bending execution arm, two bending arms that can slide horizontally are symmetrically mounted on the main platform, an execution arm mounting platform is slidably mounted on the bending arm, a stretch bending execution arm is mounted in the execution arm mounting platform for vertical movement, a mold platform is mounted in the middle of the upper end surface of the main platform, and a control screen is mounted on the front right side of the main platform;

[0005] When operating, first the main platform can control the bending arm to move horizontally to control the position of the stretch and bending actuator arm so that the stretch and bending actuator arm can fix the product. The mold platform is installed to facilitate the placement of the stretch and bending mold, the bending arm is installed to facilitate large-angle bending of the product, and the control screen is installed to control the operation of the equipment.

[0006] The actuator arm mounting platform comprises a bottom platform, a vertical door frame, a lifting frame and an internal frame. The bottom platform is vertically mounted with a vertical door frame, the vertical door frame is vertically mounted with a lifting frame inside, the lifting frame is mounted with an internal frame, the middle parts of both sides of the internal frame are connected to the lifting frame through a middle guide shaft, and the bending actuator arm is mounted in the internal frame;

[0007] When the actuator arm mounting platform is working, the lifting frame is installed to facilitate the control of the height of the bending actuator arm, the internal frame is set to facilitate the bending of the bending actuator arm in the X-axis direction and the Y-axis direction, and the vertical door frame is installed to serve as the base for the movement of the lifting frame.

[0008] The stretch-bending actuator arm comprises an actuator body, a rotating assembly and a clamping assembly. The rotating assembly is installed on one end of the actuator body close to the mold platform, and the clamping assembly is installed on the output shaft of the rotating assembly.

[0009] The main platform includes a platform body, a side platform and a bending arm mounting seat, the side platforms are symmetrically installed on the left and right sides of the platform body, two horizontally movable bending arm mounting seats are symmetrically installed on the upper end surface of the platform body, and a bending arm is installed in one end of the bending arm mounting seat close to the mold platform;

[0010] The bending arm includes a bending arm body, a driven bending gear and a driving motor. Two driving motors with main shafts facing upwards are symmetrically installed in the middle of the main platform. A driving gear is installed on the main shaft of the driving motor. A driven bending gear is fixedly installed on the lower side of one end of the bending arm body close to the mold platform. The driven bending gear and the driving gear are meshed with each other.

[0011] In the present technical solution, a main platform is provided to facilitate the installation of a bending arm mounting seat, and a bending arm mounting seat is used to facilitate the installation of the bending arm, so that the bending arm can move horizontally. At the same time, a driving motor is installed to control the rotation of the driving gear, and the driving gear and the driven bending gear are installed to control the rotation of the bending arm. An actuator arm mounting platform is installed to facilitate the installation of the stretch-bending actuator arm. The stretch-bending actuator arm is provided to facilitate the bending of long decorative strips in the X-axis, Y-axis and Z-axis directions. A lifting frame is used to facilitate up and down movement, and an internal frame is provided to control the rotation of the stretch-bending actuator arm in the Y-axis direction.

[0012] As a supplement to the present technical solution, a middle vertical bracket is vertically installed in the middle of the platform body, and two platform screw mounting seats are installed side by side on the upper end of the middle vertical bracket. A platform screw starting end mounting seat corresponding to the platform screw mounting seat is installed on both ends of the upper end surface of the platform body, and a platform screw driving motor is installed in the side platform. A platform screw is installed in a horizontal arrangement between the platform screw mounting seat and the platform screw starting end mounting seat, and a platform docking seat is installed on the platform screw that docks with the bottom of the bending arm mounting seat.

[0013] In this technical solution, the middle vertical bracket is installed to facilitate the installation of the platform screw mounting seat, the platform screw mounting seat and the platform screw starting end mounting seat are installed to facilitate the installation of the platform screw, and the platform docking seat is installed to control the horizontal movement of the bending arm mounting seat.

[0014] When the platform screw drive motor is started, the platform screw drive motor drives the platform screw, and the platform screw rotates through the external thread structure to conveniently drive the platform docking seat, and the platform docking seat is used to drive the bending arm mounting seat to move horizontally.

[0015] As a supplement to the present technical solution, two sets of platform slide rails are symmetrically installed on the upper end surface of the platform body, and shielding protrusions protruding upward and shielding the two platform slide rails are provided at the front and rear ends of the upper end surface of the platform body.

[0016] The platform slide rail is provided to facilitate the smooth sliding of the bending arm mounting seat, and the shielding protrusion is provided to shield the platform slide rail to prevent external dust from entering.

[0017] As a supplement to the present technical solution, a first folding shielding cover is installed between the bending arm mounting seats, and a second folding shielding cover is installed between the bending arm mounting seats and the side platform. The first folding shielding cover and the second folding shielding cover are provided to isolate the internal space and prevent external dust from entering.

[0018] As a supplement to the present technical solution, a circle of gear ring mounting grooves is provided on the end of the bending arm mounting seat close to the mold platform, and a cable through hole is provided in the middle of the gear ring mounting groove. The gear ring mounting groove is provided to facilitate the installation of the driven bending gear, and the cable through hole is provided to facilitate the introduction of the cable into the platform body.

[0019] As a supplement to the present technical solution, an electric control cabinet is installed at the upper end of the vertical door frame, a lifting motor group is installed on one side of the electric control cabinet, lifting rails are vertically arranged on the inner side of the vertical door frame, and lifting feet that wrap the lifting rails are symmetrically installed on both sides of the lifting frame. A lifting shaft is vertically installed in the output end of the lifting motor group, and a threaded structure is provided on the outer ring of the lifting shaft. The lower end of the lifting shaft is connected to the upper end of the lifting frame, and a transmission sleeve is installed inside the output end of the lifting motor group. The inner ring of the transmission sleeve and the outer ring of the lifting shaft are threadedly connected. When the lifting motor group drives the transmission sleeve to rotate, the rotation of the transmission sleeve drives the lifting shaft through the threaded structure. When the lifting shaft moves up and down, it drives the lifting frame to move up and down.

[0020] When the lifting action is performed, the lifting motor group is started, and the main shaft of the lifting motor group drives the transmission sleeve to rotate. The transmission sleeve is used to control the lifting shaft to move up and down through the internal threaded structure. The lifting of the lifting shaft can drive the lifting frame to move up and down. The lifting frame can run smoothly by setting the lifting slide rails and lifting feet.

[0021] As a supplement to the present technical solution, a number of cables whose upper ends are connected to the electric control cabinet are installed side by side on the front side of the vertical door frame. A cable rack is installed on the upper end of the cables. The cable rack is provided to facilitate the installation of the cables, making the cable arrangement very neat and ensuring the simplicity of the equipment.

[0022] As a supplement to the present technical solution, a side motor mounting frame is installed on the other end of the bending arm body, a side motor is installed in the side motor mounting frame, the main shaft of the side motor is horizontally facing the mold platform, and a bottom platform driving slide rail is arranged side by side on the upper end surface of the bending arm body. Two driving screw mounting seats are installed side by side in the middle of the upper end surface of the bending arm body, and a bottom platform driving screw is installed between the two driving screw mounting seats. The bottom platform driving screw is connected to the main shaft of the side motor, and a bottom platform connecting block is installed on the bottom platform driving screw. The middle of the lower end surface of the bottom platform is connected to the bottom platform connecting block, and four bottom platform support feet docking with the bottom platform driving slide rails are installed at the four corners of the lower end surface of the bottom platform.

[0023] In this technical solution, a side motor is provided to control the rotation of the bottom platform driving screw, a bottom platform connecting block is installed to facilitate the movement of the bottom platform, and a bottom platform driving slide rail is installed to facilitate the horizontal movement of the bottom platform.

[0024] As a supplement to the present technical solution, a cable guide hole is provided at one end of the bending arm body, and a guide hole shielding cover is embedded and installed on the end of the bending arm body close to the mold platform. The guide hole shielding cover shields half of the cable guide hole. By setting the cable guide hole, it is convenient to introduce the cable into the main platform, and the guide hole shielding cover is provided to shield the cable guide hole.

[0025] As a supplement to the present technical solution, two contact switches are symmetrically arranged on the front side of the bottom platform driving screw rod, and a contact bracket matching the trigger end of the contact switch is installed at the front portion of the lower end surface of the bottom platform. The extreme position of the bottom platform is controlled by setting the contact switch and the contact bracket.

[0026] As a supplement to the present technical solution, a third foldable shielding cover is installed between the bottom platform and the guide hole shielding cover, and a fourth foldable shielding cover is installed between the bottom platform and the side motor mounting frame.

[0027] As a supplement to the present technical solution, the actuator arm body includes an actuator arm bracket, an actuator arm connecting block, an actuator arm mounting block, an actuator arm internal slider and an internal slider slide rail. There are two actuator arm brackets, which are symmetrically arranged side by side. An actuator arm connecting block is installed between the ends of the two actuator arm brackets close to the mold platform, and an actuator arm mounting block is installed between the other ends of the two actuator arm brackets. An internal slider slide rail is installed on the inner side of the actuator arm bracket, and an actuator arm internal slider is slidably installed between the two actuator arm brackets. Slider feet that cover the internal slider slide rail are installed on the front and rear sides of the internal slider of the actuator arm.

[0028] The internal slider of the actuator arm and the actuator arm bracket move relative to each other, and the internal slider of the actuator arm and the internal frame are connected, so that the actuator arm bracket, the actuator arm connecting block and the actuator arm mounting block can perform the two actions of ejection and retraction along the internal slider rail. The slider support foot is provided to facilitate the stable operation of the actuator arm bracket.

[0029] As a supplement to the present technical solution, an actuator arm driving screw is rotatably installed between the actuator arm connecting block and the actuator arm mounting block, an actuator arm driving motor is installed on the upper end of the internal slider of the actuator arm close to the actuator arm mounting block, a driving wheel is installed on the main shaft of the actuator arm driving motor, a driving sleeve is installed on the actuator arm driving screw, a threaded structure is used to connect the inner ring of the driving sleeve and the actuator arm driving screw, a driven wheel is installed on one end of the driving sleeve, and a transmission belt is installed between the driven wheel and the driving wheel.

[0030] When performing the injection action, the actuator arm drive motor is started first, the actuator arm drive motor drives the drive wheel, the drive wheel drives the driven wheel through the transmission belt, the driven wheel drives the drive sleeve, the drive sleeve drives the actuator arm drive screw to rotate through the internal thread structure, and the actuator arm drive screw pushes the actuator arm bracket, the actuator arm connecting block and the actuator arm mounting block to perform the injection action or the retraction action.

[0031] As a supplement to the present technical solution, a bearing structure is installed on the other end of the driving sleeve, the outer ring of the bearing structure and the inner ring of the internal slider of the actuator arm are abutted against each other, a first telescopic sleeve is installed between the internal slider of the actuator arm and the actuator arm connecting block, and a second telescopic sleeve is installed between the internal slider of the actuator arm and the actuator arm mounting block.

[0032] In this technical solution, a bearing structure is installed to facilitate the stable operation of the drive sleeve, and a first telescopic sleeve and a second telescopic sleeve are installed to cover the exposed part of the actuator arm drive screw to ensure that dust does not enter the actuator arm drive screw.

[0033] As a supplement to the present technical solution, two slider limit blocks are installed side by side on one end of the actuator arm mounting block close to the inner slider of the actuator arm, and the slider limit blocks are provided to limit the inner slider of the actuator arm.

[0034] As a supplement to the present technical solution, the internal frame includes a horizontal bracket, a docking shaft, an upper shaft sleeve and a lower shaft sleeve. There are two horizontal brackets in total, which are arranged side by side up and down. The docking shafts are installed in the middle of the relative inner sides of the two horizontal brackets. The upper and lower sides of the end of the internal slider of the actuator arm close to the internal frame are respectively installed with an upper shaft sleeve and a lower shaft sleeve matching the docking shaft.

[0035] In the technical solution, an upper shaft sleeve and a lower shaft sleeve are provided to facilitate installation of the docking shaft, and the docking shaft is installed to facilitate horizontal rotation of the slider inside the actuator arm.

[0036] As a supplement to the present technical solution, a driven tooth part is fixedly installed on the upper end surface of the internal slider of the actuator arm, and the driven tooth part adopts an arc-shaped tooth structure at the end close to the internal slider of the actuator arm. A tooth drive motor with the main shaft vertically facing downward is installed on the end of the horizontal bracket close to the internal slider of the actuator arm, and a tooth drive gear is installed on the main shaft of the tooth drive motor, and the tooth drive gear is meshed with the arc-shaped tooth structure of the driven tooth part.

[0037] In the technical solution, a tooth drive motor is installed to drive a tooth drive gear, which is used to drive a driven tooth member, and the driven tooth member is used to control the horizontal rotation angle of a slider inside the actuator arm.

[0038] As a supplement to the present technical solution, a cylinder mounting block is installed on one end of the upper horizontal bracket close to the internal slider of the actuator arm, a slider is slidably installed on the lower side of the cylinder mounting block, a block is installed on the end of the slider close to the tooth driving gear, a cylinder is installed on the upper end surface of the cylinder mounting block, a slider docking piece connected to the slider is installed on the main shaft of the cylinder, and a notch structure is provided on the cylinder mounting block to facilitate the operation of the slider docking piece.

[0039] In the technical solution, a resisting oil cylinder is installed to facilitate the resisting oil cylinder to drive the resisting slider, and the resisting slider is used to drive the resisting block, and the resisting block can resist the tooth driving gear, thereby fixing the tooth driving gear.

[0040] As a supplement to the technical solution, two sliding rails for resisting the slider are symmetrically installed on the lower end surface of the resisting cylinder mounting block. The sliding rails for resisting the slider are installed to facilitate the normal operation of the resisting slider.

[0041] As a supplement to the present technical solution, a connecting pin key is installed between the driven tooth piece and the internal slider of the actuator arm. The connecting pin key is provided to fix the driven tooth piece and the internal slider of the actuator arm.

[0042] As a supplement to the technical solution, a support sleeve structure is installed on the lower side of the lower sleeve, and the support sleeve structure is installed to facilitate supporting the lower sleeve.

[0043] As a supplement to the present technical solution, an embedded fixing block is symmetrically installed between the lower end of the gear drive motor and the horizontal bracket, and the embedded fixing block is used to reinforce the gear drive motor.

[0044] As a supplement to the present technical solution, a driven gear limit block is symmetrically installed at the rear middle part of the lower end surface of the upper horizontal bracket. The driven gear limit block is provided to limit the rotation angle of the driven gear.

[0045] As a supplement to the present technical solution, the internal frame also includes a vertical side bracket, a middle guide shaft is installed in the middle of the vertical side bracket, and the lifting frame also includes a side lifting bracket, and the side lifting bracket has two symmetrically arranged on both sides of the internal frame, and an installation notch is provided in the middle of the side lifting bracket, and the middle guide shaft is installed in the installation notch, and a notch seal is installed in the installation notch. The middle guide shaft is provided to ensure stable operation of the internal frame, and the notch seal is provided to facilitate the installation of the middle guide shaft.

[0046] As a supplement to the present technical solution, a semi-arc protruding gear is arranged in the middle of one side of the vertical side bracket located at the front close to the mold platform, a bending motor transmission seat is installed on the front side of the lifting frame, a bending transmission shaft is installed in the bending motor transmission seat, one end of the bending transmission shaft passes through the lifting frame, and a bending gear meshing with the semi-arc protruding gear is installed on the passing end, a bending motor is installed on the bending motor transmission seat, the bending motor and the other end of the bending transmission shaft in the bending motor transmission seat are connected via a bevel gear transmission structure, and a shielding member for shielding the bending gear is installed on the inner side of the lifting frame.

[0047] In this technical solution, a bending motor transmission seat is installed to facilitate the installation of a bending transmission shaft. At the same time, a bending motor is installed to facilitate driving the bending transmission shaft. The bending transmission shaft can drive a bending gear, which in turn drives a semi-arc protruding gear. The semi-arc protruding gear is used to drive the internal frame to rotate, thereby realizing bending in the Y-axis direction.

[0048] As a supplement to the present technical solution, two upper docking seats protruding toward the side platform are arranged side by side on the upper end of the lifting frame, and two lower docking seats protruding toward the side platform are arranged side by side on the lower end of the internal frame. The upper docking seats and the lower docking seats correspond to each other one by one, and a locking cylinder is installed between the upper docking seats and the lower docking seats on the same vertical plane. The main axis of the locking cylinder faces downward, and a rotational docking is formed with the lower docking seat through a pin shaft. The upper end of the locking cylinder forms a rotational docking with the upper docking seat through a pin shaft. In the present technical solution, two locking cylinders are arranged to lock the internal frame.

[0049] As a supplement to the technical solution, two hydraulic flow distribution devices corresponding to the two locking cylinders are installed side by side on the lifting frame.

[0050] As a supplement to the present technical solution, the rotating assembly includes a rotating motor base, in which a transmission shaft extending toward the mold platform is installed, the transmission shaft is docked with the clamping assembly, and a rotating motor is installed on the rotating motor base. The rotating motor and the transmission shaft are connected to control the rotation of the transmission shaft.

[0051] As a supplement to the present technical solution, the clamping assembly includes a clamping base, a clamping cylinder, a clamping port and a clamping block. The clamping base is provided with a clamping port on one end close to the mold platform, a clamping cylinder with a main shaft extending into the clamping port is installed on the front or rear side of the clamping base, a clamping slide is installed on the main shaft of the clamping cylinder, a clamping block corresponding to the clamping slide is installed in the side wall of the clamping port, and clamping patterns are provided on the opposite sides of the clamping block and the clamping slide.

[0052] As a supplement to the technical solution, a hydraulic control component is installed on the rear side of the middle part of the main platform, and cable cabinets are installed on both sides of the front end of the hydraulic control component.

[0053] Beneficial effects: The present invention relates to a stretch-bending machine, which is used to facilitate the installation of a bending arm mounting seat by arranging a main platform, and is used to facilitate the installation of a bending arm by using a bending arm mounting seat, so that the bending arm can move horizontally, and at the same time, a driving motor is installed to control the rotation of a driving gear, and a driving gear and a driven bending gear are installed to control the rotation of the bending arm, and an actuator arm mounting platform is installed to facilitate the installation of a stretch-bending actuator arm, and a stretch-bending actuator arm is provided to facilitate the bending of long decorative parts in the X-axis direction, the Y-axis direction and the Z-axis direction, and a lifting frame is used to facilitate up and down movement, and an internal frame is provided to control the rotation of the stretch-bending actuator arm in the Y-axis direction; it has the characteristics of streamlined structure, ensuring the structural strength of the stretch-bending structure, reducing the overall volume of the equipment, facilitating equipment transportation, and facilitating equipment storage and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a front view of the present invention;

[0055] Figure 2 is a top view of the present invention;

[0056] Figure 3 It is a structural view of the actuator arm mounting platform of the present invention;

[0057] Figure 4 is a front view of the main platform of the present invention;

[0058] Figure 5 is a top view of the main platform of the present invention;

[0059] Figure 6 It is a structural view of the interior of the main platform of the present invention;

[0060] Figure 7 is a structural view of the middle vertical support of the present invention;

[0061] Figure 8 is a structural view of the first foldable shielding cover and the second foldable shielding cover according to the present invention;

[0062] Fig. 9 is a structural view of the bending arm of the present invention;

[0063] Fig.10 is a structural view of the driving motor of the present invention;

[0064] Fig.11 is a view of the internal structure of the bending arm of the present invention;

[0065] Fig.12 The present invention Fig.11 A partial enlarged view of the middle part;

[0066] Fig.13 The present invention Fig.11 A partial enlarged view of point B in the middle;

[0067] Fig.14 is a top view of the actuator body of the present invention;

[0068] Fig.15 The present invention Fig.14 Section view in the AA direction;

[0069] Fig.16 It is a structural view of the actuator body of the present invention;

[0070] Fig.17 It is a structural view of the internal frame of the present invention;

[0071] Fig.18 It is a structural view of the tooth drive gear and the driven tooth member of the present invention;

[0072] Fig.19 The present invention Fig.18 Cross-sectional view in the middle BB direction;

[0073] Fig. 20 This is a structural view of the slide rail of the slider according to the present invention;

[0074] Fig.21 This is a structural view of the semi-arc convex gear of the present invention;

[0075] Fig. 22 It is a structural view of the locking cylinder of the present invention;

[0076] Fig.23 It is a structural view of the upper docking seat and the lower docking seat of the present invention;

[0077] Fig.24 It is a structural view of the rotating assembly and the clamping assembly of the present invention;

[0078] Fig.25 It is a structural view of the lifting motor group described in the present invention. DETAILED DESCRIPTION

[0079] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0080] An embodiment of the present invention relates to a stretch bending machine, such as Figure 1 As shown in FIG. 3 , the main platform 1 includes a bending arm 4, a mold platform 2, a control screen 3, an actuator arm mounting platform 5 and a bending actuator arm 6. Two bending arms 4 that can slide horizontally are symmetrically mounted on the main platform 1. An actuator arm mounting platform 5 is slidably mounted on the bending arm 4. A bending actuator arm 6 is mounted in the actuator arm mounting platform 5 for vertical movement. The mold platform 2 is mounted in the middle of the upper end surface of the main platform 1. The control screen 3 is mounted on the front right side of the main platform 1.

[0081] When operating, first the main platform 1 can control the bending arm 4 to move horizontally, so as to control the position of the stretch and bending actuator arm 6, so that the stretch and bending actuator arm 6 can fix the product. The mold platform 2 is installed to facilitate the placement of the stretch and bending mold, and the bending arm 4 is installed to facilitate large-angle bending of the product. The control screen 3 is installed to control the operation of the equipment.

[0082] The actuator arm mounting platform 5 includes a bottom platform 9, a vertical door frame 12, a lifting frame 16 and an internal frame 17. The vertical door frame 12 is vertically mounted on the bottom platform 9. The lifting frame 16 is vertically mounted inside the vertical door frame 12. The internal frame 17 is mounted inside the lifting frame 16. The middle parts of both sides of the internal frame 17 are connected to the lifting frame 16 through the middle guide shaft 81. The bending actuator arm 6 is mounted inside the internal frame 17.

[0083] When the actuator arm mounting platform 5 is working, the lifting frame 16 is installed to facilitate the control of the height of the stretch-bending actuator arm 6, the internal frame 17 is set to facilitate the bending of the stretch-bending actuator arm 6 in the X-axis direction and the Y-axis direction, and the vertical door frame 12 is installed to facilitate the movement of the lifting frame 16 as a base.

[0084] The bending actuator 6 comprises an actuator body 20, a rotating assembly 18 and a clamping assembly 19. The rotating assembly 18 is installed on one end of the actuator body 20 close to the mold platform 2, and the clamping assembly 19 is installed on the output shaft of the rotating assembly 18.

[0085] like Figure 4 — Figure 8 As shown, the main platform 1 includes a platform body 21, a side platform 22 and a bending arm mounting seat 23. The side platforms 22 are symmetrically installed on the left and right sides of the platform body 21. Two horizontally movable bending arm mounting seats 23 are symmetrically installed on the upper end surface of the platform body 21. The bending arm mounting seat 23 is installed with a bending arm 4 at one end close to the mold platform 2.

[0086] like Fig. 9 and Fig.10 As shown, the bending arm 4 includes a bending arm body 34, a driven bending gear 36 and a driving motor 35. Two driving motors 35 with their main shafts facing upward are symmetrically installed in the middle of the main platform 1. A driving gear 37 is installed on the main shaft of the driving motor 35. A driven bending gear 36 is fixedly installed on the lower side of one end of the bending arm body 34 close to the mold platform 2, and the driven bending gear 36 and the driving gear 37 are meshed with each other.

[0087] In the present technical solution, a main platform 1 is provided to facilitate the installation of a bending arm mounting seat 23, and a bending arm mounting seat 23 is used to facilitate the installation of a bending arm 4, so that the bending arm 4 can be moved horizontally. At the same time, a driving motor 35 is installed to control the rotation of a driving gear 37, and a driving gear 37 and a driven bending gear 36 are installed to control the rotation of the bending arm 4. An actuator arm mounting platform 5 is installed to facilitate the installation of a bending actuator arm 6. The bending actuator arm 6 is provided to facilitate the bending of long decorative parts in the X-axis, Y-axis and Z-axis directions. A lifting frame 16 is provided to facilitate up and down movement, and an internal frame 17 is provided to control the rotation of the bending actuator arm 6 in the Y-axis direction.

[0088] like Figure 11-13 As shown, as a supplement to the present technical solution, a middle vertical bracket 33 is vertically installed in the middle of the platform body 21, and two platform screw mounting seats 26 are installed side by side on the upper end of the middle vertical bracket 33. A platform screw starting end mounting seat 31 corresponding to the platform screw mounting seat 26 is installed on both ends of the upper end surface of the platform body 21, and a platform screw driving motor 30 is installed in the side platform 22. A platform screw 28 arranged horizontally is installed between the platform screw mounting seat 26 and the platform screw starting end mounting seat 31, and a platform docking seat 29 docking with the bottom of the bending arm mounting seat 23 is installed on the platform screw 28.

[0089] In this technical solution, the middle vertical bracket 33 is installed to facilitate the installation of the platform screw mounting seat 26, the platform screw mounting seat 26 and the platform screw starting end mounting seat 31 are installed to facilitate the installation of the platform screw 28, and the platform docking seat 29 is installed to control the horizontal movement of the bending arm mounting seat 23.

[0090] When the platform screw drive motor 30 is started, the platform screw drive motor 30 drives the platform screw 28, and the platform screw 28 rotates through the external thread structure to conveniently drive the platform docking seat 29, and the platform docking seat 29 is used to drive the bending arm mounting seat 23 to move horizontally.

[0091] As a supplement to the present technical solution, two sets of platform slide rails 32 are symmetrically installed on the upper end surface of the platform body 21, and shielding protrusions 27 protruding upward and shielding the two platform slide rails 32 are provided at the front and rear ends of the upper end surface of the platform body 21.

[0092] The platform slide rail 32 is provided to facilitate the smooth sliding of the bending arm mounting seat 23, and the shielding protrusion 27 is provided to shield the platform slide rail 32 to prevent external dust from entering.

[0093] As a supplement to the present technical solution, a first folding shielding cover 24 is installed between the bending arm mounting seat 23, and a second folding shielding cover 25 is installed between the bending arm mounting seat 23 and the side platform 22. The first folding shielding cover 24 and the second folding shielding cover 25 are provided to isolate the internal space and prevent external dust from entering.

[0094] As a supplement to the present technical solution, a circle of gear ring mounting grooves is provided on one end of the bending arm mounting seat 23 close to the mold platform 2, and a cable through hole is provided in the middle of the gear ring mounting groove. The gear ring mounting groove is provided to facilitate the installation of the driven bending gear 36, and the cable through hole is provided to facilitate the introduction of the cable into the platform body 21.

[0095] like Fig.25 As shown, as a supplement to the present technical solution, an electric control cabinet 15 is installed at the upper end of the vertical door frame 12, and a lifting motor group 95 is installed on one side of the electric control cabinet 15. Lifting rails are vertically arranged on the inner side of the vertical door frame 12, and lifting legs 83 that wrap the lifting rails are symmetrically installed on both sides of the lifting frame 16. A lifting shaft 96 is vertically installed in the output end of the lifting motor group 95, and a threaded structure is provided on the outer ring of the lifting shaft 96. The lower end of the lifting shaft 96 is connected to the upper end of the lifting frame 16. A transmission sleeve is installed inside the output end of the lifting motor group 95, and the inner ring of the transmission sleeve and the outer ring of the lifting shaft 96 are threadedly connected. When the lifting motor group 95 drives the transmission sleeve to rotate, the rotation of the transmission sleeve drives the lifting shaft 96 through the threaded structure, and when the lifting shaft 96 moves up and down, it drives the lifting frame 16 to move up and down.

[0096] When the lifting action is performed, the lifting motor group 95 is started, and the main shaft of the lifting motor group 95 drives the transmission sleeve to rotate. The transmission sleeve is used to control the lifting shaft 96 to move up and down through the internal threaded structure. The lifting shaft 96 can drive the lifting frame 16 to move up and down. The lifting slide rail and the lifting support foot 83 are set to ensure the smooth operation of the lifting frame 16.

[0097] As a supplement to the present technical solution, a plurality of cables 14 connected to an electric control cabinet 15 at their upper ends are installed side by side at the front side of the vertical door frame 12, and a cable rack 13 is installed at the upper end of the cables 14. The cable rack 13 is provided to facilitate the installation of the cables 14, so that the cables 14 are arranged very neatly, thereby ensuring the simplicity of the equipment.

[0098] As a supplement to the present technical solution, a side motor mounting frame 39 is installed on the other end of the bending arm body 34, and a side motor 43 is installed in the side motor mounting frame 39. The main axis of the side motor 43 is horizontally facing the mold platform 2. A bottom platform driving slide rail 42 is arranged side by side on the upper end surface of the bending arm body 34. Two driving screw mounting seats 44 are installed side by side in the middle of the upper end surface of the bending arm body 34. A bottom platform driving screw 45 is installed between the two driving screw mounting seats 44. The bottom platform driving screw 45 is connected to the main axis of the side motor 43. A bottom platform connecting block 46 is installed on the bottom platform driving screw 45. The middle of the lower end surface of the bottom platform 9 is connected to the bottom platform connecting block 46. Four bottom platform support feet 10 connected to the bottom platform driving slide rail 42 are installed at the four corners of the lower end surface of the bottom platform 9.

[0099] In this technical solution, a side motor 43 is provided to control the rotation of the bottom platform driving screw 45, a bottom platform connecting block 46 is installed to facilitate the movement of the bottom platform 9, and a bottom platform driving rail 42 is installed to facilitate the horizontal movement of the bottom platform 9.

[0100] As a supplement to the present technical solution, a cable guide hole 47 is provided at one end of the bending arm body 34, and a guide hole shielding cover 38 is embedded and installed on the end of the bending arm body 34 close to the mold platform 2. The guide hole shielding cover 38 shields half of the cable guide hole 47. By setting the cable guide hole 47, it is convenient to introduce the cable into the main platform 1, and the guide hole shielding cover 38 is provided to shield the cable guide hole 47.

[0101] As a supplement to the present technical solution, two contact switches 48 are symmetrically arranged on the front side of the bottom platform driving screw rod 45, and a contact bracket 49 matching the trigger end of the contact switch 48 is installed at the front portion of the lower end surface of the bottom platform 9. The extreme position of the bottom platform 9 is controlled by setting the contact switch 48 and the contact bracket 49.

[0102] As a supplement to the present technical solution, a third folding shielding cover 41 is installed between the bottom platform 9 and the guide hole shielding cover 38 , and a fourth folding shielding cover 40 is installed between the bottom platform 9 and the side motor mounting frame 39 .

[0103] like Fig.14 — Fig.16As shown, as a supplement to the present technical solution, the actuator arm body 20 includes an actuator arm bracket 51, an actuator arm connecting block 52, an actuator arm mounting block 102, an actuator arm internal slider 50 and an internal slider rail 62. There are two actuator arm brackets 51, which are symmetrically arranged side by side. An actuator arm connecting block 52 is installed between one end of the two actuator arm brackets 51 close to the mold platform 2, and an actuator arm mounting block 102 is installed between the other ends of the two actuator arm brackets 51. An internal slider rail 62 is installed on the inner side of the actuator arm bracket 51, and an actuator arm internal slider 50 is slidably installed between the two actuator arm brackets 51. The front and rear sides of the actuator arm internal slider 50 are both installed with slider feet 63 that wrap the internal slider rail 62.

[0104] The internal slider 50 of the actuator arm and the actuator arm bracket 51 move relative to each other, and the internal slider 50 of the actuator arm and the internal frame 17 are connected, so that the actuator arm bracket 51, the actuator arm connecting block 52 and the actuator arm mounting block 102 can perform the two actions of ejection and retraction along the internal slider rail 62. The slider support foot 63 is provided to facilitate the stable operation of the actuator arm bracket 51.

[0105] As a supplement to the present technical solution, an actuator arm driving screw 59 is rotatably installed between the actuator arm connecting block 52 and the actuator arm mounting block 102, an actuator arm driving motor 53 is installed on the upper end of the actuator arm internal slider 50 close to the actuator arm mounting block 102, a driving wheel 54 is installed on the main shaft of the actuator arm driving motor 53, a driving sleeve 56 is installed on the actuator arm driving screw 59, a threaded structure is used to connect the inner ring of the driving sleeve 56 and the actuator arm driving screw 59, a driven wheel 58 is installed on one end of the driving sleeve 56, and a transmission belt 55 is installed between the driven wheel 58 and the driving wheel 54.

[0106] When performing an injection action, first start the actuator arm drive motor 53, the actuator arm drive motor 53 drives the drive wheel 54, the drive wheel 54 drives the driven wheel 58 through the transmission belt 55, the driven wheel 58 drives the drive sleeve 56, the drive sleeve 56 drives the actuator arm drive screw 59 to rotate through the internal thread structure, and the actuator arm drive screw 59 pushes the actuator arm bracket 51, the actuator arm connecting block 52 and the actuator arm mounting block 102 to perform an injection action or a retraction action.

[0107] As a supplement to the present technical solution, a bearing structure 57 is installed on the other end of the driving sleeve 56, the outer ring of the bearing structure 57 is abutted against the inner ring of the internal slider 50 of the actuator arm, a first telescopic sleeve 60 is installed between the internal slider 50 of the actuator arm and the actuator arm connecting block 52, and a second telescopic sleeve 61 is installed between the internal slider 50 of the actuator arm and the actuator arm mounting block 102.

[0108] In this technical solution, the bearing structure 57 is installed to facilitate the stable operation of the drive sleeve 56, and the first telescopic sleeve 60 and the second telescopic sleeve 61 are installed to cover the exposed part of the actuator arm drive screw 59 to ensure that dust does not enter the actuator arm drive screw 59.

[0109] As a supplement to the present technical solution, two slider limit blocks 103 are installed side by side on one end of the actuator arm mounting block 102 close to the inner slider 50 of the actuator arm. The slider limit blocks 103 are used to limit the inner slider 50 of the actuator arm.

[0110] like Fig.17 — Fig. 20 As shown, as a supplement to the present technical solution, the internal frame 17 includes a horizontal bracket 64, a docking shaft 72, an upper shaft sleeve 71 and a lower shaft sleeve 73. There are two horizontal brackets 64, which are arranged side by side up and down. The docking shaft 72 is installed in the middle of the relative inner sides of the two horizontal brackets 64, and the upper and lower sides of the end of the internal slider 50 of the actuator arm close to the internal frame 17 are respectively installed with an upper shaft sleeve 71 and a lower shaft sleeve 73 matching the docking shaft 72.

[0111] In the present technical solution, an upper shaft sleeve 71 and a lower shaft sleeve 73 are provided to facilitate the installation of the docking shaft 72 , and the installation of the docking shaft 72 is used to facilitate the horizontal rotation of the slider 50 inside the actuator arm.

[0112] As a supplement to the present technical solution, a driven tooth part 68 is fixedly installed on the upper end surface of the internal slider 50 of the actuator arm, and the driven tooth part 68 adopts an arc-shaped tooth structure at the end close to the internal slider 50 of the actuator arm. A tooth drive motor 65 with the main shaft vertically facing downward is installed on the end of the horizontal bracket 64 close to the internal slider 50 of the actuator arm, and a tooth drive gear 69 is installed on the main shaft of the tooth drive motor 65, and the tooth drive gear 69 is meshed with the arc-shaped tooth structure of the driven tooth part 68.

[0113] In the present technical solution, a gear drive motor 65 is installed to drive a gear drive gear 69, and the gear drive gear 69 is used to drive a driven gear member 68, and the driven gear member 68 is used to control the horizontal rotation angle of the slider 50 inside the actuator arm.

[0114] As a supplement to the present technical solution, a cylinder mounting block 66 is installed on one end of the upper horizontal bracket 64 close to the internal slider 50 of the actuator arm, a slider 77 is slidably installed on the lower side of the cylinder mounting block 66, a block 80 is installed on one end of the slider 77 close to the tooth driving gear 69, a cylinder 78 is installed on the upper end surface of the cylinder mounting block 66, a slider docking piece 79 connected to the slider 77 is installed on the main shaft of the cylinder 78, and a notch structure is provided on the cylinder mounting block 66 to facilitate the operation of the slider docking piece 79.

[0115] In the present technical solution, a resisting cylinder 78 is installed to facilitate the resisting cylinder 78 to drive the resisting slider 77, and the resisting slider 77 is used to drive the resisting block 80. The resisting block 80 can resist the tooth driving gear 69, thereby fixing the tooth driving gear 69.

[0116] As a supplement to the present technical solution, two slider rails 76 are symmetrically installed on the lower end surface of the cylinder mounting block 66. The slider rails 76 are installed to facilitate the normal operation of the slider 77.

[0117] As a supplement to the present technical solution, a connecting pin key 70 is installed between the driven gear member 68 and the internal slider 50 of the actuator arm. The connecting pin key 70 is provided to fix the driven gear member 68 and the internal slider 50 of the actuator arm.

[0118] As a supplement to the present technical solution, a support sleeve structure 74 is installed on the lower side of the lower sleeve 73 , and the support sleeve structure 74 is installed to facilitate supporting the lower sleeve 73 .

[0119] As a supplement to the present technical solution, an embedded fixing block 67 is symmetrically installed between the lower end of the gear drive motor 65 and the horizontal bracket 64, and the embedded fixing block 67 is provided to reinforce the gear drive motor 65.

[0120] As a supplement to the present technical solution, a driven gear limit block is symmetrically installed at the rear middle part of the lower end surface of the upper horizontal bracket 64. The driven gear limit block is provided to limit the rotation angle of the driven gear 68.

[0121] As a supplement to the present technical solution, the internal frame 17 also includes a vertical side bracket 84, a middle guide shaft 81 is installed in the middle of the vertical side bracket 84, and the lifting frame 16 also includes a side lifting bracket 82. The side lifting bracket 82 has two symmetrically arranged on both sides of the internal frame 17, and an installation notch is provided in the middle of the side lifting bracket 82. The middle guide shaft 81 is installed in the installation notch, and a notch seal 91 is installed in the installation notch. The middle guide shaft 81 is provided to ensure stable operation of the internal frame 17, and the notch seal 91 is provided to facilitate the installation of the middle guide shaft 81.

[0122] like Fig.21 As shown, as a supplement to the present technical solution, a semi-arc protruding gear 85 is provided in the middle of one side of the vertical side bracket 84 located at the front close to the mold platform 2, a bending motor transmission seat 88 is installed on the front side of the lifting frame 16, a bending transmission shaft is installed in the bending motor transmission seat 88, one end of the bending transmission shaft passes through the lifting frame 16, and a bending gear 87 meshing with the semi-arc protruding gear 85 is installed on the passing end, a bending motor 86 is installed on the bending motor transmission seat 88, the bending motor 86 and the other end of the bending transmission shaft in the bending motor transmission seat 88 are connected by a bevel gear transmission structure, and a shielding member 89 for shielding the bending gear 87 is installed on the inner side of the lifting frame 16.

[0123] In the present technical solution, a bending motor transmission seat 88 is installed to facilitate the installation of a bending transmission shaft, and a bending motor 86 is installed to facilitate driving the bending transmission shaft. The bending transmission shaft can drive a bending gear 87, which in turn drives a semi-arc protruding gear 85. The semi-arc protruding gear 85 is used to drive the internal frame 17 to rotate, thereby realizing bending in the Y-axis direction.

[0124] like Fig. 22 and Fig.23 As shown, as a supplement to the present technical solution, two upper docking seats 93 protruding toward the side platform 22 are arranged side by side on the upper end of the lifting frame 16, and two lower docking seats 94 protruding toward the side platform 22 are arranged side by side on the lower end of the internal frame 17. The upper docking seats 93 and the lower docking seats 94 correspond to each other one by one, and a locking cylinder 92 is installed between the upper docking seats 93 and the lower docking seats 94 on the same vertical plane. The main axis of the locking cylinder 92 faces downward, and a rotational docking is formed with the lower docking seat 94 through a pin shaft. The upper end of the locking cylinder 92 forms a rotational docking with the upper docking seat 93 through a pin shaft. In the present technical solution, two locking cylinders 92 are arranged to achieve locking of the internal frame 17.

[0125] As a supplement to the present technical solution, two hydraulic flow distribution devices 90 corresponding to the two locking cylinders 92 are installed side by side on the lifting frame 16 .

[0126] like Fig.24 As shown, as a supplement to the present technical solution, the rotating assembly 18 includes a rotating motor base 97, in which a transmission shaft extending toward the mold platform 2 is installed, and the transmission shaft is docked with the clamping assembly 19. A rotating motor is installed on the rotating motor base 97, and the rotating motor and the transmission shaft are connected to control the rotation of the transmission shaft.

[0127] As a supplement to the present technical solution, the clamping assembly 19 includes a clamping base 98, a clamping cylinder 99, a clamping port 100 and a clamping block 101. The clamping base 98 is provided with a clamping port 100 on one end close to the mold platform 2. A clamping cylinder 99 with a main shaft extending into the clamping port 100 is installed on the front or rear side of the clamping base 98. A clamping slider is installed on the main shaft of the clamping cylinder 99. A clamping block 101 corresponding to the clamping slider is installed in the side wall of the clamping port 100, and clamping patterns are provided on the opposite sides of the clamping block 101 and the clamping slider.

[0128] As a supplement to the present technical solution, a hydraulic control assembly 8 is installed at the rear middle side of the main platform 1 , and cable cabinets 7 are installed at both sides of the front end of the hydraulic control assembly 8 .

[0129] The above is a detailed introduction to a stretch bending machine provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A stretch bending machine, characterized in that: The machine comprises a main platform (1), a bending arm (4), a mold platform (2), a control screen (3), an actuator arm mounting platform (5) and a bending actuator arm (6); two bending arms (4) which can slide horizontally are symmetrically mounted on the main platform (1); an actuator arm mounting platform (5) is slidably mounted on the bending arm (4); a bending actuator arm (6) is mounted in the actuator arm mounting platform (5) so as to move up and down; the mold platform (2) is mounted in the middle of the upper end surface of the main platform (1); and the control screen (3) is mounted on the front right side of the main platform (1); The actuator arm mounting platform (5) comprises a bottom platform (9), a vertical door frame (12), a lifting frame (16) and an internal frame (17); the vertical door frame (12) is vertically mounted on the bottom platform (9); the lifting frame (16) is vertically mounted inside the vertical door frame (12); the internal frame (17) is mounted inside the lifting frame (16); the middle parts of both sides of the internal frame (17) are connected to the lifting frame (16) through a middle guide shaft (81); and the bending actuator arm (6) is mounted inside the internal frame (17); The stretch-bending actuator arm (6) comprises an actuator arm body (20), a rotating assembly (18) and a clamping assembly (19); the rotating assembly (18) is installed on one end of the actuator arm body (20) close to the mold platform (2); and the clamping assembly (19) is installed on the output shaft of the rotating assembly (18); The main platform (1) comprises a platform body (21), a side platform (22) and a bending arm mounting seat (23); the side platforms (22) are symmetrically mounted on the left and right sides of the platform body (21); two horizontally movable bending arm mounting seats (23) are symmetrically mounted on the upper end surface of the platform body (21); a bending arm (4) is mounted in one end of the bending arm mounting seat (23) close to the mold platform (2); The bending arm (4) comprises a bending arm body (34), a driven bending gear (36) and a driving motor (35); two driving motors (35) with their main shafts facing upwards are symmetrically installed in the middle of the main platform (1); a driving gear (37) is installed on the main shaft of the driving motor (35); a driven bending gear (36) is fixedly installed on the lower side of one end of the bending arm body (34) close to the mold platform (2); and the driven bending gear (36) and the driving gear (37) are meshed with each other.

2. A stretch bending machine according to claim 1, characterized in that: A middle vertical bracket (33) is vertically installed in the middle of the platform body (21), two platform screw rod mounting seats (26) are installed side by side on the upper end of the middle vertical bracket (33), a platform screw rod starting end mounting seat (31) corresponding to the platform screw rod mounting seat (26) is installed on both ends of the upper end surface of the platform body (21), a platform screw rod driving motor (30) is installed in the side platform (22), a platform screw rod (28) arranged in a transverse manner is installed between the platform screw rod mounting seat (26) and the platform screw rod starting end mounting seat (31), and a platform docking seat (29) docking with the bottom of the bending arm mounting seat (23) is installed on the platform screw rod (28).

3. A stretch bending machine according to claim 1, characterized in that: An electric control cabinet (15) is installed at the upper end of the vertical door frame (12), and a lifting motor group (95) is installed on one side of the electric control cabinet (15). Lifting rails are vertically arranged on the inner side of the vertical door frame (12). Lifting legs (83) that wrap around the lifting rails are symmetrically installed on both sides of the lifting frame (16). A lifting shaft (96) is vertically installed inside the output end of the lifting motor group (95). A threaded structure is arranged on the outer ring of the lifting shaft (96). The lower end of the lifting shaft (96) is connected to the upper end of the lifting frame (16). A transmission sleeve is installed inside the output end of the lifting motor group (95). The inner ring of the transmission sleeve and the outer ring of the lifting shaft (96) are connected by threads. When the lifting motor group (95) drives the transmission sleeve to rotate, the transmission sleeve rotates and drives the lifting shaft (96) through the threaded structure. When the lifting shaft (96) moves up and down, it drives the lifting frame (16) to move up and down.

4. A stretch bending machine according to claim 1, characterized in that: The actuator arm body (20) comprises an actuator arm bracket (51), an actuator arm connecting block (52), an actuator arm mounting block (102), an actuator arm internal slider (50) and an internal slider rail (62). There are two actuator arm brackets (51) arranged symmetrically side by side. An actuator arm connecting block (52) is installed between one end of the two actuator arm brackets (51) close to the mold platform (2), and an actuator arm mounting block (102) is installed between the other ends of the two actuator arm brackets (51). An internal slider rail (62) is installed on the inner side of the actuator arm bracket (51). The actuator arm internal slider (50) is slidably installed between the two actuator arm brackets (51). The front and rear sides of the actuator arm internal slider (50) are both installed with slider feet (63) that wrap around the internal slider rail (62).

5. A stretch bending machine according to claim 4, characterized in that: The internal frame (17) comprises a horizontal bracket (64), a docking shaft (72), an upper shaft sleeve (71) and a lower shaft sleeve (73). There are two horizontal brackets (64) arranged side by side. The docking shaft (72) is installed in the middle of the relative inner sides of the two horizontal brackets (64). The upper shaft sleeve (71) and the lower shaft sleeve (73) matching the docking shaft (72) are installed on the upper and lower sides of the end of the internal slider (50) of the actuator arm close to the internal frame (17).

6. A stretch bending machine according to claim 1, characterized in that: The internal frame (17) further comprises a vertical side bracket (84), a middle guide shaft (81) being installed in the middle of the vertical side bracket (84), the lifting frame (16) further comprises a side lifting bracket (82), two side lifting brackets (82) being symmetrically arranged on both sides of the internal frame (17), a mounting notch being arranged in the middle of the side lifting bracket (82), the middle guide shaft (81) being installed in the mounting notch, and a notch seal (91) being installed in the mounting notch.

7. A stretch bending machine according to claim 6, characterized in that: A semi-arc-shaped protruding gear (85) is provided in the middle of one side of the vertical side bracket (84) located at the front, close to the mold platform (2); a bending motor transmission seat (88) is installed on the front side of the lifting frame (16); a bending transmission shaft is installed in the bending motor transmission seat (88); one end of the bending transmission shaft passes through the lifting frame (16), and a bending gear (87) meshing with the semi-arc-shaped protruding gear (85) is installed on the passing end; a bending motor (86) is installed on the bending motor transmission seat (88); the bending motor (86) gear and the other end of the bending transmission shaft in the bending motor transmission seat (88) are connected to each other through a bevel gear transmission structure; a shielding member (89) for shielding the bending gear (87) is installed on the inner side of the lifting frame (16).

8. A stretch bending machine according to claim 1, characterized in that: Two upper docking seats (93) protruding toward the side platform (22) are arranged side by side on the upper end of the lifting frame (16), and two lower docking seats (94) protruding toward the side platform (22) are arranged side by side on the lower end of the internal frame (17). The upper docking seats (93) and the lower docking seats (94) correspond to each other one by one. A locking cylinder (92) is installed between the upper docking seats (93) and the lower docking seats (94) on the same vertical plane. The main axis of the locking cylinder (92) faces downward, and a rotational docking is formed with the lower docking seat (94) through a pin shaft. The upper end of the locking cylinder (92) is rotatably connected with the upper docking seat (93) through a pin shaft.

9. A stretch bending machine according to claim 1, characterized in that: The rotating assembly (18) includes a rotating motor base (97), a transmission shaft extending toward the mold platform (2) is installed in the rotating motor base (97), the transmission shaft is connected to the clamping assembly (19), a rotating motor is installed on the rotating motor base (97), the rotating motor and the transmission shaft are connected to control the rotation of the transmission shaft.

10. A stretch bending machine according to claim 1, characterized in that: The clamping assembly (19) comprises a clamping base (98), a clamping cylinder (99), a clamping port (100) and a clamping block (101); the clamping base (98) is provided with a clamping port (100) at one end close to the mold platform (2); a clamping cylinder (99) with a main shaft extending into the clamping port (100) is installed on the front or rear side of the clamping base (98); a clamping slider is installed on the main shaft of the clamping cylinder (99); a clamping block (101) corresponding to the clamping slider is installed in the side wall of the clamping port (100); and clamping patterns are provided on the opposite sides of the clamping block (101) and the clamping slider.

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