A mold processing device and mold processing method that is convenient for switching workstations

Abstract

The present invention discloses a mold processing device and mold processing method that are convenient for switching workstations, comprising an inner turntable and an outer turntable, wherein a plurality of inner processing tables are arranged on the inner turntable, and a plurality of outer processing tables are arranged on the outer turntable, and mechanical docking units capable of docking and interlocking are installed at the bottom of the inner processing tables and the outer processing tables, and a positioning ring is fixedly installed on the inner turntable at a position close to the outer turntable, and a docking stop unit is provided at a corresponding position of each outer processing table on the outer turntable; and the following steps are also included: S1: the inner processing table and the outer processing table are processed separately; S2: the docking stop unit works; S3: the mechanical docking unit performs a secondary fine adjustment; S4: the stop wheel clamps the positioning ring again; S5: adjusts the mold position, and S6: combined processing. The present invention has both independent processing and combined processing modes, constructs a system in which a sensor group, a docking stop unit and a mechanical docking unit work in coordination, and achieves precise docking during the workstation switching process, eliminating errors caused by separate positioning processing.

Description

Technical Field

[0001] The present invention relates to the technical field of metal mold processing, and in particular to a mold processing device and a mold processing method which are convenient for switching workstations. Background Art

[0002] The surface of a mold that directly shapes the material is called the forming surface. During actual mold operation, the forming surfaces of the upper and lower molds must fit seamlessly. The precision of this fit profoundly impacts mold performance and is a key factor in determining product quality, directly impacting the product's dimensional accuracy, surface finish, and overall pass rate.

[0003] This effect is particularly pronounced when metal molds are used in processes such as sheet metal bending and hemming. Currently, the industry generally uses the traditional method of separately processing the upper and lower molds. During the processing process, it is difficult to achieve completely accurate and consistent clamping and positioning each time, and positioning errors are difficult to avoid. Furthermore, the accuracy of different processing equipment varies, and tool wear also varies. These factors combine to make it difficult to achieve an ideal matching of the dimensional and shape accuracy of the upper and lower molds after they are processed separately during assembly.

[0004] This suboptimal fit leads to a series of serious problems when using metal molds for sheet metal bending and hemming. For example, wrinkles can easily appear on finished products, disrupting the smoothness of the sheet metal surface and significantly impacting the product's appearance, aesthetics, and quality. Furthermore, due to mold precision issues, finished products can also exhibit irregular edges. More seriously, they can experience localized thinning and even microcracks caused by stress concentration.

[0005] Based on the above situation, we are committed to designing an innovative mold processing device that is easy to switch workstations. This device has excellent flexibility. It can not only perform processing operations on the upper and lower molds separately according to conventional needs; but also quickly switch workstations when needed to realize the combined processing of the upper and lower molds. This fundamentally solves the precision matching problem caused by separate processing and significantly improves the quality and efficiency of metal mold manufacturing. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems raised in the background technology and to propose a mold processing device and a mold processing method that are convenient for switching workstations.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A mold processing device that is convenient for switching workstations, comprising: an inner turntable and an outer turntable, wherein the inner turntable and the outer turntable are coaxially mounted, a plurality of inner processing tables are arranged on the inner turntable, and a plurality of outer processing tables are correspondingly arranged on the outer turntable;

[0009] The inner processing table and the outer processing table are used to fix the upper mold and the lower mold by setting a clamp; the bottom of the inner processing table and the outer processing table are installed with a mechanical docking unit that can dock and interlock;

[0010] The inner turntable is fixedly installed with a positioning ring at a position close to the outer turntable. The positioning ring is concentric with the inner turntable, and a sensor group is set at the corresponding position of each inner processing table on the positioning ring;

[0011] The outer turntable is provided with a docking stop unit at the corresponding position of each outer processing table. The docking stop unit includes a docking seat, a roller and a stop wheel. The docking seat is fixed on the outer turntable. The roller and the stop wheel are respectively located on both sides of the positioning ring, and the roller is in contact with the surface of the positioning ring. The stop wheel is used to clamp or release the positioning ring.

[0012] As a further solution of the present invention: the mechanical docking unit includes an inner docking member and an outer docking member, the inner docking member is fixedly mounted on the inner processing table, and the outer docking member is fixedly mounted on the outer processing table;

[0013] The inner docking piece is provided with an automatic telescopic rod, and the outer docking piece is provided with a plug-in sleeve that cooperates with the automatic telescopic rod;

[0014] The telescopic end of the automatic telescopic rod is in a conical shape, and its diameter gradually decreases toward the end close to the plug-in cylinder. The inner diameter of the plug-in cylinder matches the diameter of the telescopic end of the automatic telescopic rod.

[0015] As a further solution of the present invention: the side of the positioning ring facing the inner processing table is an inner surface provided with meshing teeth, and the side of the positioning ring facing the outer processing table is an outer surface provided with a smooth arc surface;

[0016] The roller is fitted with the outer surface of the positioning ring and is rotatably mounted on the first connecting member, which is fixedly connected to the docking seat;

[0017] The stopping wheel is a gear, and its shape matches the meshing teeth on the inner surface of the positioning ring. The stopping wheel is rotatably mounted on the second connecting member. A T-shaped slider is provided on the top of the second connecting member. A T-shaped slide groove is provided on the docking seat to cooperate with the T-shaped slide groove. The T-shaped slide groove is slidably installed in the T-shaped slide groove.

[0018] As a further solution of the present invention: the T-shaped slider and the T-shaped chute are connected by a spring, and electromagnets are provided at the spring connections of the T-shaped slider and the T-shaped chute.

[0019] As a further solution of the present invention: the electromagnets on the T-shaped slider and the T-shaped slideway are magnetically attracted to each other after being energized, and the spring is a compression spring;

[0020] When the electromagnet is not energized, the spring is in an initial state, at which time the stop wheel does not contact the positioning ring. After the electromagnet is energized, the spring is in a compressed state, at which time the stop wheel and the meshing teeth on the inner surface of the positioning ring engage with each other.

[0021] As a further solution of the present invention: the sensor group includes a positive position sensor and several pre-stop sensors, the installation position of the positive position sensor corresponds to the position of the inner processing table, and the several pre-stop sensors are symmetrically distributed on both sides of the positive position sensor.

[0022] As a further solution of the present invention: two pre-stop sensors are provided and symmetrically installed on both sides of the upright sensor. Both the upright sensor and the pre-stop sensor are pressure sensors.

[0023] As a further solution of the present invention, the upper parts of the inner processing table and the outer processing table are both provided with XY bidirectional adjustment slides.

[0024] As a further solution of the present invention: the inner turntable is in the shape of a disc, the outer turntable is in the shape of a ring, and the outer turntable is located outside the inner turntable;

[0025] The inner turntable and the outer turntable are driven by two sets of motors respectively, and rotate around their common central axis as the rotation center;

[0026] Bases are provided at the bottom of the inner turntable and the outer turntable, and different processing stations are arranged on the periphery of the bases, which are respectively equipped with a milling machine, a punching machine and a grinding machine.

[0027] A method for using a mold processing device that is convenient for switching workstations, using the mold processing device that is convenient for switching workstations as described above, comprising the following steps:

[0028] S1: The docking stop unit and the mechanical docking unit are both in the initial state. At this time, the stop wheel is not in contact with the positioning ring, the inner docking part is separated from the outer docking part, and the automatic telescopic rod is in the retracted state. In this state, the inner turntable and the outer turntable rotate independently, and the molds on the inner processing table and the outer processing table rotate to different processing stations for independent processing;

[0029] S2: When the molds on the inner and outer processing tables need to be combined for processing, the outer turntable stops rotating and the inner turntable slows down and rotates slowly. When the pre-stop sensor on the positioning ring contacts the roller and detects pressure, the inner turntable slows down again and rotates slowly at a predetermined rotation speed until the positive position sensor contacts the roller and detects pressure, then stops rotating. At the same time, the stop wheel engages with the positioning ring to achieve the effect of mechanically stopping the inner turntable. In this state, the inner processing table, outer processing table, positive position sensor, and roller positions are aligned one by one.

[0030] S3: Loosen the positioning ring on the stop wheel, and then the automatic telescopic rod of the inner docking part extends and docks with the plug-in sleeve on the outer docking part. The automatic telescopic rod has a guiding and correcting function, which can fine-tune the position of the inner and outer processing tables to ensure accurate docking of the inner and outer processing tables.

[0031] S4: After the inner and outer docking parts are docked and interlocked, the stop wheel clamps the positioning ring again;

[0032] S5: According to processing requirements, the mold position on the inner processing table and the outer processing table is adjusted through the XY bidirectional adjustment slide;

[0033] S6: The inner turntable and the outer turntable rotate synchronously to different processing stations for combined processing.

[0034] Compared with the existing technology, the advantages of the present invention are:

[0035] 1: The mold processing device designed by the present invention breaks the limitation of the traditional single processing mode, and has both independent processing and combined processing modes of the upper and lower molds. In the independent processing mode, it can meet conventional processing tasks; while the combined processing mode can effectively avoid the clamping errors and processing errors caused by multiple clamping and different processing stages. The processing of the mating surface is completed through one clamping, ensuring high-precision matching of the mating surfaces of the upper and lower molds, greatly improving the performance of the mold, and then improving the molding quality of the product, and reducing the scrap rate caused by insufficient mold matching accuracy.

[0036] 2: A system in which the sensor group, docking stop unit and mechanical docking unit work together has been constructed. During the workstation switching process, the sensor group monitors the rotation position of the inner turntable in real time. When the pre-stop sensor and the positive position sensor are triggered successively, the speed and stop position of the inner turntable are precisely controlled, and the inner processing table and the outer processing table are preliminarily aligned. The docking stop unit responds quickly and achieves mechanical locking of the inner turntable through the engagement of the stop wheel and the positioning ring. Subsequently, the mechanical docking unit is started, and its automatic telescopic rod, with its unique conical design, performs secondary fine-tuning to further fine-tune the positions of the inner and outer processing tables to achieve precise docking between the two, effectively ensuring the positional accuracy of the mold assembly processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the overall structure of the inner processing table and the outer processing table of the present invention when they are in a combined state;

[0038] Figure 2 This is a schematic diagram of the overall structure of the present invention when the inner processing table and the outer processing table are in a separated state;

[0039] Figure 3 Schematic diagram of the installation structure of the inner processing table and the outer processing table of the present invention;

[0040] Figure 4 This is a schematic diagram of the installation structure of the inner processing table and the outer processing table at another angle of the present invention;

[0041] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at A in the middle;

[0042] Figure 6 Schematic diagram of the structure of the inner turntable of the present invention;

[0043] Figure 7 This is a schematic structural diagram of the outer turntable of the present invention;

[0044] Figure 8 Schematic diagram of the installation structure of the mechanical docking unit of the present invention;

[0045] Figure 9 It is a structural schematic diagram of the mechanical docking unit of the present invention;

[0046] Figure 10 This is a schematic structural diagram of the mechanical docking unit of the present invention in another state;

[0047] Figure 11 This is a schematic diagram of the installation structure of the docking stop unit and the positioning ring of the present invention;

[0048] Figure 12 This is a structural diagram of the docking stop unit of the present invention;

[0049] Figure 13 for Figure 12 Schematic diagram of the local enlarged structure at B in the middle;

[0050] Figure 14 It is a front view structural schematic diagram of the docking stop unit of the present invention;

[0051] Figure 15 It is a structural schematic diagram of different processing stations of the present invention.

[0052] In the figure: 1. Inner turntable; 11. Inner processing table; 12. Positioning ring; 13. Sensor group; 131. Positioning sensor; 132. Pre-stop sensor; 2. Outer turntable; 21. Outer processing table; 3. Mechanical docking unit; 31. Inner docking part; 311. Automatic telescopic rod; 32. Outer docking part; 321. Connecting cylinder; 4. Docking stop unit; 41. Docking seat; 411. T-type slide; 412. Spring; 42. Roller; 421. First connecting part; 43. Stop wheel; 431. Second connecting part; 432. T-type slider; 5. XY bidirectional adjustment slide; 6. Base; 61. Milling machine; 62. Punch; 63. Grinding machine. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0054] Reference Figure 1-15 A mold processing device that is easy to switch workstations includes an inner turntable 1 and an outer turntable 2. The inner turntable 1 and the outer turntable 2 are installed on a base 6. Processing equipment such as a milling machine 61, a punching machine 62 and a grinder 63 are set on the periphery of the base 6, which are used to perform milling, punching, grinding and other processing operations on the mold respectively.

[0055] The inner turntable 1 and the outer turntable 2 are coaxially mounted. The inner turntable 1 is in the shape of a disc, while the outer turntable 2 is in the shape of a ring and is located outside the inner turntable 1. They are driven by two sets of motors respectively and can rotate with their common central axis as the rotation center. A plurality of inner processing tables 11 are provided on the inner turntable 1, and a plurality of outer processing tables 21 are provided correspondingly on the outer turntable 2. Clamps are provided on the top of the inner processing tables 11 and the outer processing tables 21 to fix the upper mold and the lower mold (the clamps are individually designed according to the shape and characteristics of different molds). In order to adjust the mold position more accurately, an XY bidirectional adjustment slide 5 is provided on the top of the inner processing table 11 and the outer processing table 21. The operator can fine-tune the horizontal position of the upper mold and the lower mold by adjusting the XY bidirectional adjustment slide 5 according to actual processing needs to improve processing accuracy.

[0056] Reference Figure 1-10A mechanical docking unit 3 that can dock and interlock is installed at the bottom of the inner processing table 11 and the outer processing table 21; the mechanical docking unit 3 includes an inner docking piece 31 and an outer docking piece 32, the inner docking piece 31 is fixedly installed on the inner processing table 11, and the outer docking piece 32 is fixedly installed on the outer processing table 21; the inner docking piece 31 is provided with an automatic telescopic rod 311, and the outer docking piece 32 is provided with a plug-in tube 321 that cooperates with the automatic telescopic rod 311.

[0057] The telescopic end of the automatic telescopic rod 311 is conical, with its diameter gradually decreasing toward the end closest to the insertion tube 321. The inner diameter of the insertion tube 321 matches the diameter of the telescopic end of the automatic telescopic rod 311. During mold assembly, the automatic telescopic rod 311 is extended and inserted into the insertion tube 321. The conical telescopic end allows for secondary fine-tuning of the positions of the inner and outer machining tables 11 and 21, ensuring precise alignment.

[0058] Reference Figure 1-14 A positioning ring 12 is fixedly installed on the turntable 1 at a position close to the outer turntable 2. The positioning ring 12 is concentric with the inner turntable 1. The side of the positioning ring 12 facing the inner processing table 11 is the inner surface, which is provided with meshing teeth; the side facing the outer processing table 21 is the outer surface, which is set to a smooth arc surface; the positioning ring 12 is provided with a sensor group 13 at the corresponding position of each inner processing table 11. The sensor group 13 includes a positive position sensor 131 and two pre-stop sensors 132 symmetrically distributed on both sides of the positive position sensor 131 (multiple pre-stop sensors 132 can be provided). The positive position sensor 131 and the pre-stop sensor 132 are both pressure sensors.

[0059] The outer turntable 2 is provided with a docking stop unit 4 at the corresponding position of each outer processing table 21. The docking stop unit 4 includes a docking seat 41, a roller 42 and a stop wheel 43. The docking seat 41 is fixed on the outer turntable 2, and the roller 42 is rotatably installed on the first connecting member 421. The first connecting member 421 is fixedly connected to the docking seat 41, and the roller 42 is in contact with the outer surface of the positioning ring 12. During the rotation of the inner turntable 1 and the outer turntable 2, the roller 42 will always roll along the outer surface of the positioning ring 12. When the roller 42 rolls over the positive position sensor 131 and the pre-stop sensor 132, it will be detected by the positive position sensor 131 and the pre-stop sensor 132.

[0060] The stopping wheel 43 is a gear, and its shape matches the meshing teeth on the inner surface of the positioning ring 12 (the cross-section of the positioning ring 12 is T-shaped, and the cross-sections of the roller 42 and the stopping wheel 43 are I-shaped, and are installed in conjunction with the positioning ring 12 to prevent the roller 42 and the stopping wheel 43 from moving in the up and down directions). The stopping wheel 43 is rotatably mounted on the second connecting member 431, and a T-shaped slider 432 is provided on the top of the second connecting member 431. A T-shaped slide 432 is provided on the docking seat 41 to cooperate with the T-shaped slide 432. The T-shaped slide 432 is slidably installed in the T-shaped slide 411. The T-shaped slide 432 and the T-shaped slide 411 are connected by a spring 412, and an electromagnet is provided at the connection between the spring 412 of the T-shaped slide 432 and the T-shaped slide 411.

[0061] When the electromagnet is not energized, the spring 412 is in its initial state and the stop wheel 43 does not contact the positioning ring 12; after the electromagnet is energized, the spring 412 is in a compressed state, and the stop wheel 43 engages with the meshing teeth on the inner surface of the positioning ring 12, thereby achieving mechanical locking of the inner turntable 1.

[0062] When performing conventional upper and lower mold processing separately, the inner turntable 1 and the outer turntable 2 operate independently, and the operator fixes the upper mold on the XY bidirectional adjustment slide 5 of the inner processing table 11, and the lower mold on the XY bidirectional adjustment slide 5 of the outer processing table 21; according to processing requirements, the inner turntable 1 or the outer turntable 2 is driven to rotate, and the mold is moved to the corresponding processing station. For example, for a mold that requires milling of the outer shape, it is rotated to the corresponding station of the milling machine 61 for processing; for a mold that requires punching, it is rotated to the corresponding station of the punching machine 62 for punching. During this process, the mold position can be fine-tuned by the XY bidirectional adjustment slide 5 to ensure processing accuracy (the XY bidirectional adjustment slide 5 can use an automatic adjustment slide or a manual adjustment slide according to actual processing needs).

[0063] When the upper mold and the lower mold need to be combined, the outer turntable 2 stops rotating, and the inner turntable 1 rotates slowly. The pre-stop sensor 132 in the sensor group 13 starts to monitor the rotation position of the inner turntable 1 in real time. Since the roller 42 always rolls along the outer surface of the positioning ring 12 during the rotation of the inner turntable 1, when the roller 42 contacts the pre-stop sensor 132, the pre-stop sensor 132 is triggered, and the control system receives the signal to control the inner turntable 1 to slow down again and rotate slowly according to the set rotation speed (since the distance between the positive position sensor 131 and the pre-stop sensor 132 is designed, it is possible to calculate the rotation speed, and within the set time, it can be rotated from the pre-stop sensor 132 position to the positive position sensor 131 position), and stop rotating when reaching the positive position sensor 131 position. At this time, the inner processing table 11 and the outer processing table 21 are preliminarily aligned;

[0064] In order to further ensure that the inner turntable 1 stops at the accurate docking position, the present application also provides a stop wheel 43 for mechanical clamping. Specifically, when the positive position sensor 131 is triggered, the docking stop unit 4 starts to work, and the electromagnets on the T-shaped slider 432 and the T-shaped slide groove 411 are energized. The T-shaped slider 432 slides in the T-shaped slide groove 411, and the spring 412 is compressed, driving the stop wheel 43 to approach the positioning ring 12. The stop wheel 43 engages with the meshing teeth on the inner surface of the positioning ring 12 to achieve mechanical locking of the inner turntable 1, causing it to stop mechanically and prevent it from rotating during subsequent operations.

[0065] Reference Figure 4-14 After that, the positions of the inner processing table 11 and the outer processing table 21 are fine-tuned for the second time. First, the stop wheel 43 is temporarily released from the positioning ring 12, and the mechanical docking unit 3 is started. The automatic telescopic rod 311 at the bottom of the inner processing table 11 is extended. Since its telescopic end is conical in shape, it can play a guiding and correcting role during the insertion of the plug-in cylinder 321 at the bottom of the outer processing table 21. The positions of the inner processing table 11 and the outer processing table 21 will be fine-tuned for the second time, and the positions of the two will be further fine-tuned to ensure that the inner processing table 11 and the outer processing table 21 are accurately docked.

[0066] After the docking is completed, the mold position is fine-tuned by the XY bidirectional adjustment slide 5. It should be noted here that the function of the mechanical docking unit 3 and the docking stop unit 4 is to accurately dock the positions of the inner processing table 11 and the outer processing table 21 (to prevent the positions of the two from being angularly offset), and the XY bidirectional adjustment slide 5 is used to adjust the position of the mold after docking to eliminate the influence of the mold due to installation errors. In addition, the XY bidirectional adjustment slide 5 also has the function of preventing interference.

[0067] After the combined processing is completed, the automatic telescopic rod 311 of the mechanical docking unit 3 is retracted first to release the docking interlocking state of the inner processing table 11 and the outer processing table 21. Then, the electromagnet of the docking stop unit 4 is powered off, the spring 412 returns to its initial state, the stop wheel 43 is separated from the positioning ring 12, and the inner turntable 1 is unlocked, and it can be switched back to the independent processing mode.

[0068] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are common means well known to those skilled in the art.

[0069] A method for using a mold processing device that is convenient for switching workstations, using the mold processing device that is convenient for switching workstations, comprising the following steps:

[0070] S1: The docking stop unit 4 and the mechanical docking unit 3 are both in the initial state. At this time, the stop wheel 43 is not in contact with the positioning ring 12, the inner docking member 31 is separated from the outer docking member 32, and the automatic telescopic rod 311 is in the retracted state. In this state, the inner turntable 1 and the outer turntable 2 rotate independently, and the molds on the inner processing table 11 and the outer processing table 21 rotate to different processing stations for independent processing;

[0071] S2: When the molds on the inner processing table 11 and the outer processing table 21 need to be combined for processing, the outer turntable 2 stops rotating, and the inner turntable 1 slows down and rotates slowly. When the pre-stop sensor 132 on the positioning ring 12 contacts the roller 42 and detects pressure, the inner turntable 1 slows down again and rotates slowly at a predetermined rotation speed until the positive position sensor 131 contacts the roller 42 and detects pressure, then stops rotating. At the same time, the stop wheel 43 engages with the positioning ring 12, achieving the effect of mechanically stopping the inner turntable 1. In this state, the inner processing table 11, the outer processing table 21, the positive position sensor 131, and the roller 42 are aligned one by one.

[0072] S3: Loosen the positioning ring 12 by the stop wheel 43. Then, the automatic telescopic rod 311 of the inner docking member 31 extends and docks with the plug-in sleeve 321 on the outer docking member 32. The automatic telescopic rod 311 has a guiding and correcting function, which can fine-tune the positions of the inner processing table 11 and the outer processing table 21, so that the inner processing table 11 and the outer processing table 21 can be accurately docked.

[0073] S4: After the inner docking member 31 and the outer docking member 32 are docked and interlocked, the locking wheel 43 clamps the positioning ring 12 again;

[0074] S5: Adjust the mold position on the inner processing table 11 and the outer processing table 21 through the XY bidirectional adjustment slide 5;

[0075] S6: The inner turntable 1 and the outer turntable 2 rotate synchronously to different processing stations for combined processing.

[0076] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A mold processing method that is convenient for switching workstations, characterized in that: It comprises an inner turntable (1) and an outer turntable (2) which are coaxially arranged, wherein a plurality of inner processing tables (11) are arranged on the inner turntable (1), and a plurality of outer processing tables (21) are correspondingly arranged on the outer turntable (2); The inner processing table (11) and the outer processing table (21) are used to fix the upper mold and the lower mold by setting a clamp; a mechanical docking unit (3) capable of docking and interlocking is installed at the bottom of the inner processing table (11) and the outer processing table (21); The inner turntable (1) is fixedly mounted with a positioning ring (12) at a position close to the outer turntable (2), the positioning ring (12) is concentric with the inner turntable (1), and the positioning ring (12) is provided with a sensor group (13) at a corresponding position of each inner processing table (11); The outer turntable (2) is provided with a docking stop unit (4) at a position corresponding to each outer processing table (21), and the docking stop unit (4) includes a docking seat (41), a roller (42) and a stop wheel (43), the docking seat (41) is fixed on the outer turntable (2), the roller (42) and the stop wheel (43) are respectively located on both sides of the positioning ring (12), and the roller (42) is in contact with the surface of the positioning ring (12), and the stop wheel (43) is used to clamp or release the positioning ring (12); The mechanical docking unit (3) comprises an inner docking piece (31) and an outer docking piece (32), wherein the inner docking piece (31) is fixedly mounted on the inner processing table (11), and the outer docking piece (32) is fixedly mounted on the outer processing table (21); The inner docking piece (31) is provided with an automatic telescopic rod (311), and the outer docking piece (32) is provided with a plug-in sleeve (321) that cooperates with the automatic telescopic rod (311); The telescopic end of the automatic telescopic rod (311) is conical in shape, and its diameter gradually decreases toward the end close to the plug-in cylinder (321); the inner diameter of the plug-in cylinder (321) matches the diameter of the telescopic end of the automatic telescopic rod (311); The sensor group (13) includes a positive position sensor (131) and a plurality of pre-stop sensors (132), wherein the installation position of the positive position sensor (131) corresponds to the position of the inner processing table (11), and the plurality of pre-stop sensors (132) are symmetrically distributed on both sides of the positive position sensor (131); The inner processing table (11) and the outer processing table (21) are both provided with an XY bidirectional adjustment slide (5) on their upper parts; The following processing methods are also included: S1: The docking stop unit (4) and the mechanical docking unit (3) are both in an initial state, at which time the stop wheel (43) is not in contact with the positioning ring (12), the inner docking member (31) is separated from the outer docking member (32), and the automatic telescopic rod (311) is in a retracted state. In this state, the inner turntable (1) and the outer turntable (2) rotate separately, and the molds on the inner processing table (11) and the outer processing table (21) rotate to different processing stations and are processed separately; S2: When the molds on the inner processing table (11) and the outer processing table (21) need to be combined for processing, the outer turntable (2) stops rotating, and the inner turntable (1) slows down and rotates slowly. When the pre-stop sensor (132) on the positioning ring (12) contacts the roller (42) and detects pressure, the inner turntable (1) slows down again and rotates slowly according to the set rotation speed until the positive position sensor (131) contacts the roller (42) and stops rotating when pressure is detected. At the same time, the stop wheel (43) engages with the positioning ring (12) to achieve the effect of mechanically stopping the inner turntable (1). In this state, the positions of the inner processing table (11), the outer processing table (21), the positive position sensor (131), and the roller (42) are aligned one by one. S3: Let the stop wheel (43) loosen the positioning ring (12), and then the automatic telescopic rod (311) of the inner docking piece (31) extends and docks with the plug-in tube (321) on the outer docking piece (32). The automatic telescopic rod (311) has a guiding and correcting function, which can fine-tune the position of the inner processing table (11) and the outer processing table (21), so that the inner processing table (11) and the outer processing table (21) can be accurately docked; S4: After the inner docking piece (31) and the outer docking piece (32) are docked and interlocked, the stop wheel (43) clamps the positioning ring (12) again; S5: According to the processing requirements, the mold positions on the inner processing table (11) and the outer processing table (21) are adjusted by the XY bidirectional adjustment slide (5); S6: The inner turntable (1) and the outer turntable (2) rotate synchronously to different processing stations for combined processing.

2. A mold processing method that facilitates switching workstations according to claim 1, characterized in that: The side of the positioning ring (12) facing the inner processing table (11) is an inner surface provided with meshing teeth, and the side of the positioning ring (12) facing the outer processing table (21) is an outer surface provided with a smooth arc surface; The roller (42) is fitted with the outer surface of the positioning ring (12), the first connecting member (421) is fixedly mounted on the docking seat (41), and the roller (42) is rotatably mounted on the first connecting member (421); The stop wheel (43) is a gear, and its shape matches the meshing teeth on the inner surface of the positioning ring (12). The docking seat (41) is provided with a T-shaped slot (411), and a T-shaped slider (432) matching the T-shaped slot (411) is slidably installed in the T-shaped slot (411). A second connecting member (431) is provided at the bottom of the T-shaped slider (432), and the stop wheel (43) is rotatably installed on the second connecting member (431).

3. A mold processing method that facilitates switching workstations according to claim 2, characterized in that: The T-shaped slider (432) and the T-shaped chute (411) are connected via a spring (412), and electromagnets are provided at the connection points between the T-shaped slider (432) and the spring (412) of the T-shaped chute (411).

4. A mold processing method that facilitates switching workstations according to claim 3, characterized in that: The electromagnets on the T-shaped slider (432) and the T-shaped slide groove (411) are magnetically attracted to each other after being energized, and the spring (412) is a compression spring; When the electromagnet is not energized, the spring (412) is in an initial state, at which time the stop wheel (43) does not contact the positioning ring (12); when the electromagnet is energized, the spring (412) is in a compressed state, at which time the stop wheel (43) and the meshing teeth on the inner surface of the positioning ring (12) mesh with each other.

5. A mold processing method that facilitates switching workstations according to claim 4, characterized in that: Two pre-stop sensors (132) are provided and symmetrically mounted on both sides of the upright sensor (131). Both the upright sensor (131) and the pre-stop sensor (132) are pressure sensors.

6. A mold processing method that facilitates switching workstations according to claim 5, characterized in that: The inner turntable (1) is in the shape of a disk, the outer turntable (2) is in the shape of a ring, and the outer turntable (2) is located outside the inner turntable (1); The inner turntable (1) and the outer turntable (2) are driven by two sets of motors respectively, and rotate with their common central axis as the rotation center; A base (6) is provided at the bottom of the inner turntable (1) and the outer turntable (2), and different processing stations are arranged on the periphery of the base (6), respectively equipped with a milling machine (61), a punching machine (62) and a grinding machine (63).

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