Multi-station machining center for mold base production

Abstract

The invention discloses a multi-station machining center for mold base production, relates to the technical field of mold base production, and aims to solve the technical problems that upper and lower parts need to be disassembled and assembled, the efficiency is poor, and the machining efficiency is influenced. The multi-station machining center comprises a machining center body, a protection door is arranged on the machining center body, and a machining platform is arranged in the machining center body; a fixing base is installed at the top of the machining platform, a lifting plate is arranged at the top of the fixing base, a plurality of clamping plates are arranged at the top of the lifting plate, every two clamping plates form a pair, and a lifting structure, a rotary clamping structure and a matching structure are combined. Through the hydraulic rod, automatic inclined rising is achieved, the workpiece placing position is moved to the outside, an external mechanical arm is matched, continuous automatic workpiece feeding and discharging can be conveniently carried out, automatic clamping and loosening can be carried out, a round guide sleeve can be stably clamped, manual steps are reduced, the machining efficiency is improved, the structure is simple, and the machining cost is low. And the device has multiple functions and is suitable for continuous production of mold frame components with high processing speed.

Description

Technical Field

[0001] The invention relates to the technical field of mold frame production, and more specifically to a multi-station machining center for mold frame production. Background Art

[0002] The mold frame is composed of various structural parts (such as templates, guide pillars, guide sleeves, etc.), which are used to support and fix key components such as mold cavities and cores to ensure the relative position accuracy of various components during the opening and closing of the mold. In order to ensure the processing accuracy, a multi-station machining center with high processing accuracy will be used. When processing guide pillars and guide sleeves, the processing speed is faster. For example, guide sleeves only need to be drilled, and the processing speed of such parts is faster. Frequent manual disassembly and assembly are required when loading and unloading parts. Since the processing area is inside the machining center, transmission equipment such as conveyor belts cannot be directly transported, which affects the improvement of processing efficiency. In view of this, we propose a multi-station machining center for mold frame production. Summary of the invention

[0003] The purpose of the present invention is to provide a multi-station machining center for mold frame production to solve the technical problem that the disassembly and assembly efficiency of upper and lower parts is poor, which affects the machining efficiency.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a multi-station machining center for mold frame production, comprising a machining center body, the machining center body is provided with a protective door, a machining platform is provided inside the machining center body, a fixed seat is installed on the top of the machining platform, a lifting plate is provided on the top of the fixed seat, a plurality of clamps are provided on the top of the lifting plate, wherein every two of the clamps form a pair, a guide sleeve is pressed between the inner peripheries of the two clamps, a recessed area is provided on the top of the fixed seat, a lifting structure is provided in the recessed area, the lifting structure can extend and drive the lifting plate to tilt and rise toward the direction of the protective door, a rotary clamp structure is provided on one side of the clamp, a matching structure is provided on one end of the rotary clamp structure, and a hydraulic rod for driving the lifting structure and the rotary clamp structure to move is provided on one side of the matching structure.

[0005] Preferably, the inner wall of the clamping plate is matched with the outer periphery of the guide sleeve, the clamping plate and the lifting plate are limited and slidable, and the limited and slidable moving distance between the clamping plate and the lifting plate is less than half of the radius of the sleeve.

[0006] Preferably, the lifting structure includes multiple groups of long links and short links, the short links are shorter than the long links, the long links and the short links are centrally rotated and connected with a pin, the short links at the bottom are hinged to the recessed area of ​​the fixed seat, and the short links at the top are hinged to the bottom of the lifting plate.

[0007] Preferably, the rotary clamp structure includes a side clamp seat, which is tightly fitted with the multiple clamping plates. An extension handle is connected to the outer periphery of the side clamp seat, and a rotating gear is installed at one end of the extension handle. The rotating gear is rotatably connected to the fixed seat.

[0008] Preferably, the matching structure includes a rotating seat, which is rotatably connected to a fixed seat, a driving gear is connected to the outer periphery of the rotating seat, a transmission gear is meshed with one side of the driving gear, and the transmission gear and the driving gear are respectively meshed with two rotating gears.

[0009] Preferably, the fixed end of the hydraulic rod is fixed to the inner wall of the fixing seat, and the driving end of the hydraulic rod is installed with a buffer section.

[0010] Preferably, the buffer section includes a straight rod and two constraint rings fixed at both ends of the straight rod. A fixing ring is fixed on the outer periphery of the straight rod. The fixing ring is movably connected to the long connecting rod at the bottom end. The long connecting rod at the bottom and top ends slide in a limited position with the recessed area and the bottom of the lifting plate respectively.

[0011] Preferably, one end of the straight rod is connected to a spiral head, the spiral head is located at the center of the rotating seat, a spiral groove fitting with the spiral head is opened in the center of the rotating seat, and the spiral angle of the spiral head is ninety degrees.

[0012] Preferably, the upper half of the splint is set as a circular cavity, and the circular cavity is in contact with the cylindrical guide sleeve. The inner wall of the circular cavity of the splint is provided with multiple cavities, and the inner parts of the inner cavities are each provided with a circular clamping structure. The lower half of the splint is provided with a circular sleeve, and a downward moving plate is provided on the inner circumference of the circular sleeve, and a circular wrapping structure is provided inside the circular sleeve.

[0013] Preferably, the circle clamping structure includes a straight handle head, which is rotatably connected to the inner cavity, a bending plate is connected to one side of the straight handle head, the bending plate is tightly attached to the cylindrical guide sleeve, a fixed round head is provided on one side of the bending plate, a rubber layer is bonded to the side of the fixed round head close to the guide sleeve, and one side of the constraint clamp is in contact with the outer arc of the bending plate.

[0014] Preferably, the circular wrapping structure includes two thread grooves opened on the inner wall of the circular sleeve, the two thread grooves are overlapping and interconnected, a sliding head fixed to the outer periphery of the lower plate is slidably provided on the inner periphery of the thread groove, two winding rollers are rotatably connected inside the circular sleeve, a driving motor is installed at one end of the winding roller, and a wrapping rope is wound around the outer periphery of the winding roller.

[0015] Preferably, the two wrapping ropes are respectively located at the center of the threaded groove and connected to the top of the lower plate. The outer periphery of the wrapping rope is a rubber part, and a plurality of clips are integrally formed on the outer periphery of the rubber part. The plurality of clips are distributed in a circular array with the wrapping rope as the center. When the two wrapping ropes wrap the guide sleeve, adjacent clips are staggered and pressed against each other.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can achieve the lifting and lowering function through the hinged design of multiple groups of connecting rods, and then through the design of two intersecting connecting rods with different lengths, combined with the limited sliding design of one of the connecting rods, it can make the workpiece tilt to one side while lifting and lowering, so that it can move outward and move to the outside of the protective door, so as to achieve the effect of moving the fixed place of the workpiece to the outside, and then cooperate with an external manipulator to automatically load and unload the parts, thereby solving the problem of poor efficiency in disassembly and assembly of the upper and lower parts, which affects the processing efficiency.

[0017] 2. The present invention also enables the side clamp seat to follow the rotation through the rotation connection between the rotating gear and the fixed seat and the connection between the rotating gear and the extension handle, and then fixes the side clamp seat to the extension handle. Combined with the adaptation of the side clamp seat and the clamp plate, and the symmetrical distribution of the two side clamp seats, the clamp plate can be further fixed to achieve the effect of automatic clamping and loosening, further solving the problem of poor disassembly and assembly efficiency of the upper and lower parts, which affects the processing efficiency.

[0018] 3. The present invention also uses the spiral engagement between the spiral head and the rotary seat and the design of the spiral head's outer circumference being 90 degrees, and then the meshing transmission between the gears to enable it to be inserted, which will drive the rotary seat to rotate through the spiral, and further drive the gear to rotate, thereby realizing automatic fixation of the side clamp seat to the clamp plate. At the same time, the design of the straight rod and the two end constraints, combined with the fixation of the fixed ring and the limited sliding connecting rod, form a tightening clamping area between the two constraint rings, so that when it rises, the straight rod moves first and will pull out the spiral head first, until it is driven to rotate and release the clamp (referring to rotating 90 degrees). At this time, the spiral head also cancels the engagement state with the rotary seat, and the constraint ring close to the rotary seat contacts the fixed ring, and then drives the inclined lifting and lowering. When descending, it first descends to the required position, and then drives the rotation and clamping, thereby realizing the effect of combined drive.

[0019] 4. The present invention also sets the upper half of the clamping plate as a circular cavity that fits with the guide sleeve, and the inner wall is provided with a plurality of inner cavities, with a built-in circular clamping structure, the straight handle head of the circular clamping structure is rotatably connected with the inner cavity, the bending plate is tightly attached to the guide sleeve, and the rubber layer on the fixed round head provides high friction. During the processing, if the guide sleeve has a tendency to rotate, the rubber layer will be subjected to a rotational force, thereby causing the bending plate to have a tendency to press the guide sleeve, playing a role in lateral anti-rotation, ensuring that the upper half of the cylindrical guide sleeve is clamped stably, avoiding the influence of rotation on the processing accuracy, and improving the accuracy and quality of the processing.

[0020] 5. The present invention also enables the downward moving plate to descend under the action of the gravity of the guide sleeve and the conveying action of the external manipulator, thereby driving the sliding head to slide along the thread groove of the spiral track, so that the wrapping rope is wound and wrapped around the outer periphery of the guide sleeve. The multiple rubber clips on the outer periphery of the wrapping rope are distributed in a ring array, and the clips are staggered and pressed against each other when the two wrapping ropes wrap the guide sleeve, which greatly increases the friction between the guide sleeve and the wire roller. At the same time, the winding roller is rotatably connected through a one-way bearing. During processing, the rotation direction of the guide sleeve causes the wrapping rope to pull the winding roller to move in the restricted direction of the one-way bearing, further enhancing the anti-rotation fixing effect. This design realizes effective constraint and fixation of the lower half of the guide sleeve, avoids the guide sleeve from rotating during processing, and ensures the stability of processing.

[0021] 6. The present invention also facilitates the fixing and canceling operations of the guide sleeve through the design of the wrapped circular structure. The external manipulator cooperates with the gravity of the guide sleeve to realize the automatic wrapping and fixing of the wrapped rope. When canceling the fixation, the winding roller is controlled by the external control structure to rotate for winding, driving the lower plate to rise. The operation is simple and efficient, reducing the tedious process of frequent manual disassembly and assembly, and improving the processing efficiency. At the same time, the rotation direction of the drilling during drilling corresponds to the limiting direction of the one-way bearing and the rotation friction direction of the rubber layer, further optimizing the stability and efficiency of the processing process.

[0022] By using a hydraulic rod as mentioned above, automatic inclined rising is realized, so that the placement position is moved to the outside. In conjunction with an external manipulator, continuous automatic loading and unloading of parts can be facilitated, and automatic clamping and loosening can be performed. The circular guide sleeve can also be stably clamped, reducing manual steps and improving processing efficiency. It has a simple structure and multiple functions, and is suitable for continuous production of mold frame components with fast processing speeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention without the protective door; Figure 3 It is a schematic diagram of the structure of the present invention when the fixing seat is fixing the sleeve member; Figure 4 It is a structural schematic diagram of the lifting plate in the present invention in a lifted state; Figure 5 It is an exploded state diagram between the distributing structure and the rotating clamp structure in the present invention; Figure 6 It is a schematic diagram of a half-section structure of the rotating seat in the present invention; Figure 7 This is a schematic diagram of the structure of two clamping plates clamped together in the second embodiment of the present invention; Figure 8 It is a structural schematic diagram of a splint in a second embodiment of the present invention; Fig. 9 It is a structural schematic diagram of the circle clamping structure in the present invention; Fig.10 It is a structural schematic diagram of the circular wrapping structure in the present invention in a state where the circular guide sleeve is not clamped; Fig.11 It is a structural schematic diagram of the circular wrapping structure in the present invention in a state of clamping a circular guide sleeve; Fig.12 It is a schematic diagram of the structure of the wrapping rope in the present invention.

[0024] Description of the numbers in the figure: 1. Machining center body; 2. Protection door; 3. Machining platform; 4. Fixed seat; 5. Lifting plate; 6. Clamping plate; 7. Lifting structure; 8. Clamping structure; 9. Distributing structure; 10. Hydraulic rod; 11. Buffer section; 12. Screw head; 13. Warning light; 14. Industrial computer; 15. Clamping structure; 16. Round sleeve; 17. Lowering plate; 18. Round structure; 701, long connecting rod; 702, short connecting rod; 703, pin shaft; 801, side clamp seat; 802, extension handle; 803, rotating gear; 901, rotating seat; 902, driving gear; 903, transmission gear; 101. straight rod; 102. restraining ring; 103. fixing ring; 151, straight handle; 152, curved plate; 153, round head; 154, rubber layer; 155, restraining chuck; 181. Thread groove; 182. Sliding head; 183. Winding roller; 184. Driving motor; 185. Wrapping rope; 186. Clip. DETAILED DESCRIPTION

[0025] like Figures 1 to 12 As shown, the present invention relates to a multi-station machining center for mold frame production, including a machining center body 1, the machining center body 1 is provided with a protective door 2, a machining platform 3 is provided inside the machining center body 1, a warning light 13 and an industrial computer 14 are provided on the machining center body 1, in addition, a tool magazine, a turning and milling part, a driving part and other parts are also provided. This is the prior art, so the rest will not be repeated.

[0026] Among them, what is different from the prior art is that a fixed seat 4 is installed on the top of the processing platform 3, and a lifting plate 5 is provided on the top of the fixed seat 4. A plurality of clamps 6 are provided on the top of the lifting plate 5, wherein every two clamps 6 form a pair, and a guide sleeve is pressed between the inner peripheries of the two clamps 6, and the inner wall of the clamp 6 is adapted to the outer periphery of the guide sleeve. The adaptation means that the clamp 6 can be tightly attached to and clamped on the outer periphery of the guide sleeve, and the clamp 6 and the lifting plate 5 slide in a limited position, and the limited sliding movement distance of the clamp 6 and the lifting plate 5 is less than half of the radius of the sleeve. This point is mainly for rectangular sleeve parts. Through limited sliding and clamping cooperation with two clamps 6, the two clamps 6 can be separated to avoid large friction and difficulty in separation when taking out the parts. The limited sliding distance is small to avoid excessive separation of parts from falling from the side. The clamp 6 can be designed in other shapes such as semicircular, etc., so as to adapt to the fixation of parts of other shapes.

[0027] In order to move the fixed position of the sleeve to the outside, a recessed area is opened on the top of the fixed seat 4, and a lifting structure 7 is arranged in the recessed area. The lifting structure 7 can extend to drive the lifting plate 5 to tilt and rise in the direction of the protective door 2; the lifting structure 7 includes multiple groups of long connecting rods 701 and short connecting rods 702, the short connecting rod 702 is shorter than the long connecting rod 701, and the central rotation between the long connecting rod 701 and the short connecting rod 702 is connected with a pin shaft 703, the bottom short connecting rod 702 is hinged to the recessed area of ​​the fixed seat 4, and the top short connecting rod 702 is hinged to the bottom of the lifting plate 5, and the bottom and top long connecting rods 701 are respectively limited to the recessed area and the bottom of the lifting plate 5. The limited sliding is achieved by the groove and the protruding block, so that the movement of the long connecting rod 701 can make it expand and contract.

[0028] In order to realize automatic clamping and loosening, a rotary clamping structure 8 is provided on one side of the clamping plate 6, and the rotary clamping structure 8 includes a side clamping seat 801, which is tightly fitted with multiple clamping plates 6. An extension handle 802 is connected to the outer periphery of the side clamping seat 801, and a rotating gear 803 is installed at one end of the extension handle 802. The rotating gear 803 is rotatably connected to the fixed seat 4. Therefore, when the rotating gear 803 rotates, the extension handle 802 can be driven to rotate, thereby realizing the rotation of the side clamping seat 801, and further automatically clamping and loosening the sleeve.

[0029] It is worth mentioning that the above operation is driven by only one hydraulic rod 10. The hydraulic rod 10 is arranged inside the recessed area and embedded and fixed in the fixing seat 4. The fixed end of the hydraulic rod 10 is fixed to the inner wall of the fixing seat 4. The driving end of the hydraulic rod 10 is installed with a buffer section 11. The buffer section 11 includes a straight rod 101 and two constraint rings 102 fixed at both ends of the straight rod 101. A fixing ring 103 is fixed on the outer periphery of the straight rod 101. A protrusion is integrally formed at the bottom of the fixing ring 103. A cross bar is connected between the two long connecting rods 701 at the bottom. The cross bar passes through the protrusion. Therefore, when the fixing ring 103 moves, the long connecting rod 701 at the bottom can be driven to move. A spiral head 12 is connected to one end of the straight rod 101, and a matching structure 9 is provided on one side of the spiral head 12; the matching structure 9 includes a rotating seat 901, which is rotatably connected to the fixed seat 4, and a driving gear 902 is connected to the outer periphery of the rotating seat 901, and a transmission gear 903 is meshed on one side of the driving gear 902, and the transmission gear 903 and the driving gear 902 are respectively meshed with two rotating gears 803, and the spiral head 12 is located at the center of the rotating seat 901, and a spiral that fits the spiral head 12 is opened in the center of the rotating seat 901. Since the diameters of the gears are the same, the spiral angle of the groove spiral head 12 is ninety degrees, which can limit the angle of unscrewing and tightening.

[0030] Working principle: This embodiment provides a multi-station machining center for mold frame production. When in use, the hydraulic rod 10 is controlled by external control, the driving end contracts, the straight rod 101 and the spiral head 12 move, and during the movement of the spiral head 12, due to the design of the spiral, the rotary seat 901 will rotate in coordination, so that the side clamping seat 801 of the clamping clamp plate 6 is unscrewed. When it is rotated to ninety degrees, the spiral head 12 also cancels the engagement state with the rotary seat 901, and the restraining ring 102 close to the rotary seat 901 contacts the fixed ring 103. The continuous operation of the hydraulic rod 10 pulls the fixed ring 103 to move, so that the long connecting rod 701 moves, and the long and short design of the connecting rod is matched, thereby making the lifting plate 5 tilt. The lifting plate 5 rises and moves to the outside, and then the sleeve is placed between the two clamps 6 through an external manipulator. After the placement is completed, the control structure controls the driving end of the hydraulic rod 10 to extend again. During the extension process, the gravity of the lifting plate 5 and the sleeve cooperates with the movement of the constraint ring 102 on the side of the rotating seat 901, followed by a slow automatic recovery and fall. When the lifting plate 5 moves into place, the spiral head 12 contacts the rotating seat 901 and is gradually inserted and engaged. During the insertion process, the cooperation of the spiral can drive the gear to rotate, so that the side clamp seat 801 rotates and clamps the clamp 6. When the clamping is stable, the side of the constraint ring 102 away from the rotating seat 901 will press and fix the fixing ring 103.

[0031] After the above is completed, the machining center body 1 is operated to calibrate the tool. After the tool is calibrated, processing can be carried out. When the processing is completed, the above operations are repeated to carry out continuous assembly line processing, avoiding manual repetition of tool calibration, disassembly and clamping steps, and improving processing efficiency.

[0032] The above is mainly for continuous processing of square guide sleeves. When processing round guide sleeves, especially during drilling, the round guide sleeves are prone to self-rotation. In view of this point; In the second embodiment, in order to achieve stable clamping of the circular guide sleeve, the upper half of the clamping plate 6 is configured as a circular cavity, and the circular cavity fits the cylindrical guide sleeve.

[0033] In order to clamp and constrain the outer periphery of the upper half of the guide sleeve, a plurality of inner cavities are provided on the inner wall of the circular cavity of the clamping plate 6, and a circular clamping structure 15 is provided inside each of the inner cavities.

[0034] The circle clamping structure 15 includes a straight handle head 151, which is rotatably connected to the inner cavity. A curved plate 152 is connected to one side of the straight handle head 151. The curved plate 152 is tightly attached to the cylindrical guide sleeve. A fixed round head 153 is provided on one side of the curved plate 152. A rubber layer 154 is bonded to the side of the fixed round head 153 close to the guide sleeve. The rubber layer 154 serves to enhance the friction force and constrain one side of the clamping head 155 to fit the outer arc of the curved plate 152.

[0035] Working principle: When clamping, first the two clamping plates 6 perform preliminary clamping on the guide sleeve. During the processing, due to the high friction of the rubber layer 154, if the circular guide sleeve tends to rotate, the rubber layer 154 can be given a rotation tendency. Since the constraint clamp 155 is in contact with the curved plate 152, one side of the curved plate 152 will have a tendency to press the guide sleeve, further generating mutual constraints and playing a role in lateral anti-rotation, thereby preventing the processed guide sleeve from rotating.

[0036] In order to wrap and constrain the lower half of the guide sleeve, a circular sleeve 16 is provided at the lower half of the clamp plate 6, and a lower moving plate 17 is provided on the inner circumference of the circular sleeve 16. A circular structure 18 is provided inside the circular sleeve 16. The circular structure 18 includes two spiral track thread grooves 181 opened on the inner wall of the circular sleeve 16. The two thread grooves 181 are superimposed and interconnected. A sliding head 182 fixed to the outer circumference of the lower moving plate 17 is slidably provided on the inner circumference of the thread groove 181. Two winding rollers 183 are rotatably connected to the inside of the circular sleeve 16 through a one-way bearing. The design of the one-way bearing can realize adaptive unwinding, and the winding direction is controlled by the brake inside the motor combined with the limit of the one-way bearing. To achieve restriction, a driving motor 184 is installed at one end of the winding roller 183, and a wrapping rope 185 is wound around the outer periphery of the winding roller 183. The diameter of the thread groove 181 is the same as that of the wrapping rope 185. The two wrapping ropes 185 are respectively located at the center of the thread groove 181 and are connected to the top of the lower plate 17. One end of the wrapping rope 185 is connected to a fixed block, and the fixed block is fixed to the top of the lower plate 17. The outer periphery of the wrapping rope 185 is a rubber part, and a plurality of clips 186 are integrally formed on the outer periphery of the rubber part. The clips 186 are made of rubber material, and the plurality of clips 186 are distributed in a circular array with the wrapping rope 185 as the center. When the two wrapping ropes 185 wrap the guide sleeve, the adjacent clips 186 are staggered and pressed against each other.

[0037] Working principle: When the external manipulator is conveying, it can drive the lower plate 17 to descend with the gravity of the guide sleeve itself. Due to the spiral track design of the thread groove 181 (the wrapping starting ends of the two wrapping ropes 185 are respectively located inside the corresponding thread groove 181, which plays a restraining role during rotation, causing the wrapping ropes 185 to wind along the track of the thread groove 181), the two wrapping ropes 185 can be wound and wrapped around the outer periphery of the guide sleeve. Due to the design of the clamping piece 186 and the mutual connection of the two thread grooves 181, the clamping between the two wrapping ropes 185 during wrapping The sheets 186 are interlaced and pressed against each other, thereby greatly increasing the friction between the guide sleeve and the two wrapping ropes 185. Combined with the restriction of the one-way bearing, the lower half of the guide sleeve is constrained and fixed. During processing, the wrapping rope 185 pulls the winding roller 183 to move in the direction of the one-way bearing restriction. Combined with its wrapping and high friction, it further plays an anti-rotation fixation role, thereby preventing the processed guide sleeve from rotating. When the fixation needs to be cancelled, the winding roller 183 is controlled to rotate through an external control structure, and the winding can be carried out to drive the lower plate 17 to rise.

[0038] It should be noted that, during the drilling process, the rotation direction of the drilling corresponds to the limiting direction of the one-way bearing and the rotational friction direction of the rubber layer 154 .

[0039] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A multi-station machining center for mold frame production, characterized in that: The invention comprises a machining center body (1), wherein the machining center body (1) is provided with a protective door (2), a machining platform (3) is provided inside the machining center body (1), a fixed seat (4) is installed on the top of the machining platform (3), a lifting plate (5) is provided on the top of the fixed seat (4), a plurality of clamping plates (6) are provided on the top of the lifting plate (5), the inner wall of the clamping plate (6) is matched with the outer periphery of the guide sleeve, and the limited sliding movement distance between the clamping plate (6) and the lifting plate (5) is less than half of the radius of the sleeve, wherein every two clamping plates (6) form a pair, and a guide sleeve is pressed between the inner peripheries of the two clamping plates (6); A recessed area is provided at the top of the fixing seat (4), a lifting structure (7) is provided in the recessed area, the lifting structure (7) can extend to drive the lifting plate (5) to tilt and rise in the direction of the protective door (2), a rotating clamp structure (8) is provided on one side of the clamp plate (6), a matching structure (9) is provided at one end of the rotating clamp structure (8), and a hydraulic rod (10) for driving the lifting structure (7) and the rotating clamp structure (8) to move is provided on one side of the matching structure (9).

2. A multi-station machining center for mold frame production according to claim 1, characterized in that: The lifting structure (7) comprises a plurality of groups of long connecting rods (701) and short connecting rods (702), wherein the short connecting rods (702) are shorter than the long connecting rods (701), and a pin shaft (703) is provided at the center of the long connecting rods (701) and the short connecting rods (702) for central rotation connection, wherein the short connecting rods (702) at the bottom end are hinged to a recessed area of ​​a fixing seat (4), and the short connecting rods (702) at the top end are hinged to the bottom of the lifting plate (5).

3. A multi-station machining center for mold frame production according to claim 2, characterized in that: The rotary clamp structure (8) comprises a side clamp seat (801), the side clamp seat (801) is tightly fitted with the plurality of clamp plates (6), an extension handle (802) is connected to the outer periphery of the side clamp seat (801), a rotating gear (803) is mounted on one end of the extension handle (802), and the rotating gear (803) is rotatably connected to the fixed seat (4).

4. A multi-station machining center for mold frame production according to claim 3, characterized in that: The matching structure (9) comprises a rotating seat (901), the rotating seat (901) is rotatably connected to the fixed seat (4), the outer periphery of the rotating seat (901) is connected to a driving gear (902), one side of the driving gear (902) is meshed with a transmission gear (903), and the transmission gear (903) and the driving gear (902) are respectively meshed with two rotating gears (803).

5. A multi-station machining center for mold frame production according to claim 4, characterized in that: The fixed end of the hydraulic rod (10) is fixed to the inner wall of the fixing seat (4); the driving end of the hydraulic rod (10) is provided with a buffer section (11); the buffer section (11) comprises a straight rod (101) and two restraining rings (102) fixed at both ends of the straight rod (101); a fixing ring (103) is fixed to the outer periphery of the straight rod (101); the fixing ring (103) is movably connected to a long connecting rod (701) at the bottom end; the long connecting rod (701) at the bottom end and the top end slides with the recessed area and the bottom of the lifting plate (5) respectively.

6. A multi-station machining center for mold frame production according to claim 5, characterized in that: One end of the straight rod (101) is connected to a spiral head (12), the spiral head (12) is located at the center of the rotary seat (901), and a spiral groove that fits the spiral head (12) is opened at the center of the rotary seat (901), and the spiral angle of the spiral head (12) is ninety degrees.

7. A multi-station machining center for mold frame production according to claim 6, characterized in that: The upper half of the clamping plate (6) is configured as a circular cavity, and the circular cavity is fitted with a cylindrical guide sleeve. The inner wall of the circular cavity of the clamping plate (6) is provided with a plurality of inner cavities, each of which is provided with a circular clamping structure (15). The lower half of the clamping plate (6) is provided with a circular sleeve (16), the inner circumference of the circular sleeve (16) is provided with a downward moving plate (17), and the circular sleeve (16) is provided with a circular wrapping structure (18).

8. A multi-station machining center for mold frame production according to claim 7, characterized in that: The circle clamping structure (15) comprises a straight handle (151), the straight handle (151) being rotatably connected to the inner cavity, a curved plate (152) being connected to one side of the straight handle (151), the curved plate (152) being in close contact with a cylindrical guide sleeve, a fixed round head (153) being provided on one side of the curved plate (152), a rubber layer (154) being bonded to a side of the fixed round head (153) close to the guide sleeve, and one side of the restraining clamp (155) being in contact with an outer arc of the curved plate (152).

9. A multi-station machining center for mold frame production according to claim 8, characterized in that: The circular wrapping structure (18) comprises two spiral track thread grooves (181) opened on the inner wall of the circular sleeve (16); the two thread grooves (181) are superimposed and interconnected; a sliding head (182) is slidably arranged on the inner periphery of the thread groove (181) and is fixed to the outer periphery of the lower moving plate (17); two winding rollers (183) are rotatably connected to the inside of the circular sleeve (16) via a one-way bearing; a driving motor (184) is installed at one end of the winding roller (183); and a wrapping rope (185) is wound around the outer periphery of the winding roller (183).

10. A multi-station machining center for mold frame production according to claim 9, characterized in that: The two wrapping ropes (185) are respectively located at the center of the thread groove (181) and connected to the top of the downward moving plate (17). The outer periphery of the wrapping rope (185) is a rubber part. The outer periphery of the rubber part is integrally formed with a plurality of clips (186). The plurality of clips (186) are distributed in a circular array with the wrapping rope (185) as the center. When the two wrapping ropes (185) wrap the guide sleeve, the adjacent clips (186) are interlaced and pressed against each other.

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