Wire bar feeding and unloading device for stator coil molding process

Abstract

The application discloses a kind of wire bar feeding and discharging devices for stator coil mould pressing process, fixed unit, first clamping mechanism, second clamping mechanism and Y direction power mechanism, fixed unit includes installation beam and flange fixed seat, first clamping mechanism is fixedly connected in the middle part of installation beam, Y direction power mechanism is installed on installation beam with interval, each Y direction power mechanism is connected with one second clamping mechanism;The structure of first clamping mechanism and second clamping mechanism is same, and it includes X direction power mechanism, anti-drop plate driven by first Z direction mechanism, bottom plate connected with X direction power mechanism and pressing plate driven by second Z direction mechanism.The second clamping mechanism of the application can be flexibly adjusted in Y direction position, and then it is suitable for the feeding and discharging of wire bar with different length specifications;In addition, the clamping of the application adopts bottom + upper pressure + side anti-drop, to avoid bar material falling off and shaking.

Description

Technical Field

[0001] This invention relates to the field of hydropower generator set equipment manufacturing, and in particular to a bar loading and unloading device for stator coil molding process. Background Technology

[0002] The stator coil is the core component of a large generator set, and its quality directly determines the generator's operating quality. The production process of generator coils includes processes such as blanking and wire removal, braiding (arranging and weaving multiple rectangular insulated flat copper wires into a rod), gluing, end forming, sealing and welding, grinding, main insulation wrapping, and molding. Among these, the molding process is one of the core processes in stator coil production. It involves placing the rod coated with insulating material into a molding machine and heating it. The molding machine's mold molds plasticize and hold the rod under pressure, melting the insulating material to form a dense, uniform composite insulation layer with a strictly rectangular cross-section.

[0003] Currently, most domestic and international motor manufacturers use manual labor for stator coil molding. On-site operators use overhead cranes to hoist the coils to be molded and multiple molding dies onto the molding equipment. However, the stator coils and molding dies are heavy, requiring multiple workers to coordinate their efforts. Furthermore, the molding process involves heating the insulation material, resulting in high ambient temperatures and a poor working environment. Therefore, it is necessary to design a coil loading and unloading device to complement the molding process, thereby improving production efficiency and reducing labor intensity. Summary of the Invention

[0004] In view of this, the present invention proposes a bar loading and unloading device for stator coil molding process, which can realize automatic loading and unloading of bar, significantly improving work efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The present invention discloses a bar loading and unloading device for stator coil molding process, the bar loading and unloading device comprising a fixing unit, a first clamping mechanism disposed on the fixing unit, and at least two second clamping mechanisms. The fixing unit includes a mounting beam and a flange fixing seat for connection with a robot, the flange fixing seat being installed in the middle of the mounting beam; the first clamping mechanism being fixedly connected to the middle of the mounting beam, and the second clamping mechanisms being installed on the mounting beams located on both sides of the first clamping mechanism;

[0007] The bar loading and unloading device also includes at least two Y-axis power mechanisms, which are installed at intervals on the mounting beam. Each Y-axis power mechanism has a second clamping mechanism connected to its power output end. The Y-axis power mechanism drives the second clamping mechanism to reciprocate along the mounting beam in a straight line.

[0008] The first clamping mechanism and the second clamping mechanism have the same structure, both including an X-axis power mechanism, an anti-detachment plate driven by a first Z-axis mechanism, a bottom plate connected to the X-axis power mechanism, and a pressing plate driven by a second Z-axis mechanism. The first Z-axis mechanism is fixedly connected to the X-axis power mechanism, and the second Z-axis mechanism is connected to the X-axis power mechanism. The bottom plate has a horizontally arranged base support, the pressing plate is located above the base support, and the anti-detachment plate is arranged at intervals with the anti-detachment plate.

[0009] In this invention, the X-axis power mechanism of the second gripping mechanism is connected to the Y-axis power mechanism, while the X-axis power mechanism of the first gripping mechanism is fixedly connected to the mounting beam. The advantages are: the second gripping mechanism of this invention, connected to the mounting beam via the Y-axis power mechanism, allows for flexible adjustment of its Y-axis position, making it suitable for gripping, loading, and unloading wire rods of different lengths. Furthermore, the gripping mechanism employs a bottom-mounted design, top pressure, and side anti-detachment, effectively ensuring stability during the material handling process, preventing not only the rod from falling off but also the wire rod from swaying due to an unstable center of gravity. This invention can be installed on the end effector of a robot, thereby achieving automatic feeding of wire rods and improving work efficiency.

[0010] Preferably, the Y-axis power mechanism includes a Y-axis linear motor, a Y-axis linear module fixed to the bottom of the mounting beam, and a Y-axis slider that reciprocates linearly along the Y-axis linear module.

[0011] The X-axis power mechanism includes a mounting base, an X-axis linear motor, an X-axis linear module driven by the X-axis linear motor, and an X-axis slider that reciprocates along the X-axis linear module. The X-axis linear module and the first Z-axis mechanism are fixedly connected to the mounting base. The top of the bottom plate has a horizontally arranged upper mounting part, which is fixedly connected to the X-axis slider.

[0012] The mounting base of the first clamping mechanism is fixedly connected to the bottom center of the mounting beam, and the mounting base of the second clamping mechanism is fixedly connected to the Y-axis slider of the Y-axis power mechanism.

[0013] In this invention, two or more Y-axis power mechanisms are installed at the bottom of the mounting beam, which can realize arbitrary adjustment of the second clamping mechanism in the Y-axis to meet the clamping requirements of coils of different lengths; the bottom plate and the pressing plate are both connected to the X-axis slider, so that the bottom plate and the pressing plate can be adjusted in the X-axis, and the bottom plate and the anti-detachment plate are arranged alternately to meet the feeding and unloading requirements of coils of different specifications.

[0014] The first Z-axis mechanism includes a vertically arranged electric cylinder, a pair of guide rails connected to the power output end of the electric cylinder, and a pair of sliders fixed to the end of the X-axis linear module or the Y-axis moving seat. The electric cylinder drives the two guide rails to reciprocate up and down along the two sliders. The anti-detachment plate is fixed to the lower part of the two guide rails, and the middle part of the anti-detachment plate protrudes towards the bottom plate to form an anti-detachment boss. In this invention, the sliders are a pair and fixedly installed, so that the guide rails can reciprocate up and down relative to the sliders, thereby meeting the lifting requirements of the anti-detachment plate. During the unloading process, the anti-detachment plate can be staggered and avoid the fixed iron sidewall of the wire rod mold, which facilitates unloading.

[0015] More preferably, the tops of the two guide rails are connected by a connecting plate, which is connected to the electric cylinder.

[0016] Preferably, the pressing plate has a clearance groove that avoids the vertical portion of the bottom plate, allowing the bottom plate to pass through; the second Z-axis mechanism includes mounting plates fixed to both sides of the upper mounting portion and linear electric cylinders vertically fixed to each of the mounting plates, and the linear electric cylinders are all connected to the pressing plate.

[0017] Preferably, the wire rod loading and unloading device further includes multiple positioning mechanisms for pushing the wire rod into the mold. Each vertical part of the bottom plate is provided with one of the positioning mechanisms to push the wire rod towards the anti-detachment plate. In this invention, to accommodate stator coils with poor compatibility, there is often a certain gap between the stator coil on the bottom plate and the stator sidewall of the mold. The positioning mechanisms can be used to push the stator coil into place.

[0018] More preferably, the vertical portion of the bottom plate is provided with an installation groove, and the positioning mechanism includes a mini cylinder disposed in the installation groove and a positioning block connected to the mini cylinder. The stroke of the mini cylinder is 8mm to 15mm (more preferably 10mm) to meet the requirements of the stator coil.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] The second gripping mechanism of this invention is connected to a crossbeam via a Y-axis power mechanism, allowing for flexible adjustment of its Y-axis position. This makes the invention applicable to the gripping, loading, and unloading of wire rods of different lengths. Furthermore, the gripping mechanism employs a bottom-support design, top pressure, and side anti-detachment, effectively ensuring stability during the gripping process. This not only prevents the rods from falling off but also prevents the wire rods from swaying due to an unstable center of gravity. This invention can be installed on the end effector of a robot, thereby achieving automatic loading of wire rods and improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the stator coil in this invention.

[0022] Figure 2 This is a schematic diagram of the structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the second clamping mechanism of the present invention.

[0024] Figure 4 This is a side view of the second clamping mechanism of the present invention.

[0025] Figure 5 yes Figure 4 A schematic diagram of direction AA.

[0026] Figure 6 This is a schematic diagram of the material feeding process of this invention. Detailed Implementation

[0027] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of the present invention, and detailed implementation methods and specific operation processes are given. However, the scope of protection of the present invention is not limited to the following embodiments.

[0028] It should be noted that, in the description of this invention, relational terms such as “first” and “second” are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0029] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances. It should be noted that the stator coil in this invention is a rod F with a rectangular cross-section, and both ends of the rod F have bent sections, as detailed in [see details]. Figure 1 .

[0030] like Figure 2 As shown, this invention proposes a bar loading and unloading device for stator coil molding process, including a fixing unit, a first clamping mechanism 100 disposed on the fixing unit, and two second clamping mechanisms 200. The fixing unit includes a mounting beam 301 and a flange fixing seat 302 for connection with a robot. The flange fixing seat 302 is installed in the middle of the mounting beam 301. The first clamping mechanism 100 is fixedly connected to the middle of the mounting beam 301, and the two second clamping mechanisms 200 are symmetrically installed on the mounting beam 301 located on both sides of the first clamping mechanism 100 to ensure balance as much as possible, thereby ensuring stability during the clamping and transfer process.

[0031] Combination Figure 2 It is known that the bar loading and unloading device also includes two Y-axis power mechanisms 400 that are matched one-to-one with the second clamping mechanism 200. The two Y-axis power mechanisms 400 are installed at intervals at the bottom of the mounting beam 301. The power output end of each Y-axis power mechanism 400 is connected to a second clamping mechanism 200. The Y-axis power mechanism 400 drives the second clamping mechanism 200 to reciprocate along the mounting beam 301 in a straight line. The position of the second clamping mechanism 200 can be adjusted, thereby realizing the adjustment of the spacing between the three clamping mechanisms to meet the clamping requirements of bars F of different lengths.

[0032] Combination Figure 2 and Figure 6 As can be seen, the Y-axis power mechanism 400 of the present invention includes a Y-axis linear motor 401, a Y-axis linear module 402 fixed to the bottom of the mounting beam 301 (in actual installation, the Y-axis linear motor 401 and the Y-axis linear module 402 can be of a linear structure), and a Y-axis slider that reciprocates linearly along the Y-axis linear module 402. During operation, the Y-axis linear motor 401 can drive the Y-axis slider to move horizontally and reciprocally along the Y-axis linear module 402 in the Y direction. Furthermore, to ensure the installation of the X-axis power mechanism 201, the Y-axis slider of the Y-axis linear module 402 is located at its bottom, providing a mounting base for the X-axis power mechanism 201 of the second clamping mechanism 200. This ensures that the X-axis power mechanism 201 of the second clamping mechanism 200 reciprocates in the Y direction under the drive of the Y-axis power mechanism 400, thereby achieving adjustment of the spacing between the three clamping mechanisms, meeting the clamping requirements of wire bars F of different lengths, and improving the flexibility of the present invention.

[0033] The first clamping mechanism 100 and the second clamping mechanism 200 in this invention have the same structure, differing only in their installation positions. The mounting base of the first clamping mechanism 100 is fixedly connected to the bottom center of the mounting beam 301; the mounting base 207 of the second clamping mechanism 200 is fixedly connected to the Y-axis slider of the Y-axis power mechanism 400, ensuring its movement in the Y-axis direction. The first clamping mechanism 100 and the second clamping mechanism 200 have the same structure. Taking the second clamping mechanism 200 as an example: [The following is a description of the second clamping mechanism 200 and its connection to the first clamping mechanism 100.] Figure 3-6It is known that the second clamping mechanism 200 includes an X-axis power mechanism 201, an anti-detachment plate 203 driven to rise and fall by a first Z-axis mechanism 202, a bottom plate 204 connected to the X-axis power mechanism 201, and a pressing plate 206 driven by a second Z-axis mechanism 205. The X-axis power mechanism 201 includes an X-axis linear motor 201a, an X-axis linear module 201b driven by the X-axis linear motor 201a, and an X-axis slider 201c that reciprocates along the X-axis linear module 201b. The X-axis linear module 201b and the first Z-axis mechanism 202 are fixedly connected to the mounting base, and the first Z-axis mechanism 202 is located on one side of the X-axis linear module 201b, ensuring that the anti-detachment plate 203 can rise and fall freely, thereby avoiding the mold N during the unloading process.

[0034] Of course, in actual installation, the Y-axis power mechanism 400 in this invention can also be a rodless electric cylinder, which drives the moving seat to reciprocate horizontally in the Y-axis. The X-axis power mechanism 201 in this invention can also be a rodless electric cylinder installed in the X-axis, which drives the bottom plate 204 to reciprocate horizontally in the X-axis.

[0035] Combination Figure 3-6 It can be seen that the bottom plate 204 includes a vertical part 204a, an upper mounting part 204b horizontally disposed on the vertical part 204a, and a bottom support part 204c horizontally disposed at the bottom of the vertical part 204a; the X-axis slider 201c is fixedly connected to the bottom of the X-axis linear module 201b, the upper mounting part 204b is fixedly connected to the X-axis slider 201c, and the anti-detachment plate 203 is spaced apart from the vertical part 204a of the bottom plate 204. The anti-detachment plate 203 is located on the opposite side of the vertical part 204a and can laterally limit the rod F to prevent the rod F from falling off the bottom plate 204. The second Z-axis mechanism 205 is fixed to the upper mounting portion 204b of the bottom plate 204, so that the X-axis power mechanism 201 drives the bottom plate 204 and the second Z-axis mechanism 205 to reciprocate synchronously in the X direction, satisfying the feeding and unloading requirements of the bar F; the pressing plate 206 is located above the bottom support portion 204c of the bottom plate 204. When clamping the bar F, it can press down on the top of the bar F. The pressing plates 206 of multiple clamping mechanisms press down at the same time to avoid shaking caused by the asymmetry of the two sides when gripping the bar F, thereby avoiding shaking. In addition, the pressing plate 206 has a clearance groove to avoid the vertical portion 204a of the bottom plate 204. The clearance groove and the bottom plate 204 are spaced apart to ensure the free lifting and lowering of the pressing plate 206.

[0036] The bottom support plate 204 of the present invention can support the bottom of the wire rod F, the pressing plate 206 presses down on the wire rod F, and the anti-detachment plate 203 provides lateral restraint on the wire rod F (i.e., bottom support (with lateral restraint) + upper pressure + lateral anti-detachment), which can press the wire rod F tightly. This not only avoids shaking caused by the asymmetry of the two sides of the wire rod F, but also prevents it from falling off, improving the stability during the material handling process. When used in conjunction with a robot, it can realize the automated loading and unloading of the wire rod F.

[0037] Combination Figure 3-5 It can be seen that the first Z-axis mechanism 202 includes a vertically arranged electric cylinder 202a, a pair of vertical guide rails 202b, and a pair of sliders 202c fixedly connected to the mounting base 207. The electric cylinder 202a drives the two guide rails 202b to move up and down along the two sliders 202c. The mounting base 207 is provided with an electric cylinder seat 202d, and the cylinder body of the electric cylinder 202a is fixedly connected to the electric cylinder seat 202d to achieve fixation.

[0038] A vertical mounting plate is fixed to the bottom end of the electric cylinder base 202d, which is located on the outside of the other end of the X-axis linear module. Two sliders 202c are vertically spaced on the mounting plate, and two guide rails 202b pass through the grooves of the sliders 202c. The tops of the two guide rails 202b are connected by a connecting plate 202e, which is connected to the piston rod of the electric cylinder 202a. An anti-detachment plate 203 is installed on the lower part of the two guide rails 202b, and the middle part of the anti-detachment plate 203 protrudes towards the bottom plate 204 to form an anti-detachment boss. In actual operation, when the electric cylinder 202a is activated, the piston rod of the electric cylinder 202a extends upward, and the two guide rails 202b are lifted upward by force, causing the lower anti-detachment plate 203 to rise, thereby avoiding the fixed iron side wall M of the mold N and facilitating material unloading; when the piston rod of the electric cylinder 202a retracts downward, the guide rails 202b are subjected to a downward force and fall down. After the anti-detachment plate 203 falls into place, it can laterally prevent the wire bar F on the bottom plate 204 from detaching, thus preventing the wire bar F from falling off from the opposite side of the bottom plate 204.

[0039] Combination Figure 4 It can be seen that the second Z-axis mechanism 205 includes mounting plates 205a fixed to both sides of the upper mounting part 204b and linear electric cylinders 205b vertically fixed to each mounting plate 205a. The linear electric cylinders 205b are all connected to the pressing plate 206. The two linear electric cylinders 205b ensure the stable lifting and lowering of the pressing plate 206.

[0040] Combination Figure 3-5 It is understood that the wire bar loading and unloading device of the present invention also includes three positioning mechanisms 500. Each second clamping mechanism 200 and the first clamping mechanism 100 is respectively provided with a positioning mechanism 500, which can push the wire bar F to the fixed iron side wall M of the mold.

[0041] A positioning mechanism 500 is installed on each bottom plate 204. A mounting groove is opened on the vertical part 204a of the bottom plate 204 (the mounting groove is close to the bottom support part 204c of the bottom plate 204). The positioning mechanism 500 includes a mini cylinder set in the mounting groove and a positioning block that is driven to extend and retract by the mini cylinder (the positioning block reciprocates horizontally in the X direction). When extended, it can push the wire bar F into place, thereby accommodating stator coils with poor consistency.

[0042] In actual installation, the pushing stroke of the mini cylinder can be selected from 8mm to 15mm (the specific stroke can be selected according to actual needs, such as a mini cylinder with a 10mm stroke or a 12mm stroke), thereby satisfying the micro-displacement adjustment of the rod F and achieving positioning.

[0043] The working process and principle of this invention are briefly described below:

[0044] The present invention is fixed to the end effector of the robot via flange fixing seat 302. The robot enables the loading and unloading of wire rod F at different positions, and then places the wire rod wrapped with insulating tape into the mold of the stator coil molding equipment (the side wall of the mold is the side wall of the stator iron). Before loading, the position of the second clamping mechanism 200 can be adjusted according to the specifications of the wire rod F. If the wire rod F is long, the Y-axis power mechanism 400 is used to adjust the second clamping mechanism 200 to move towards both ends of the mounting beam 301, so that the distance between the three clamping mechanisms increases, which meets the stable clamping requirements of the longer wire rod. If the wire rod F is short, the Y-axis power mechanism 400 is used to adjust the second clamping mechanism 200 to move towards the middle of the mounting beam 301, so that the distance between the three clamping mechanisms decreases, which meets the stable clamping requirements of the shorter wire rod. The two second clamping mechanisms 200 are symmetrical after being adjusted.

[0045] During loading, the robot moves the present invention to the location of the wire bar, adjusts the anti-detachment plate 203 to a high position to avoid the wire bar, moves the bottom plate 204 toward the wire bar so that the wire bar is on the bottom support, and simultaneously adjusts the three pressing plates 206 downward to press the wire bar F, using the pressing plates 206 and the bottom plate 204 to clamp the wire bar F; after the anti-detachment plate 203 is adjusted downward to the position, it is located on one side of the wire bar F to prevent the wire bar F from detaching laterally.

[0046] During the unloading process, the robot moves three gripping mechanisms above the mold, causing the wire rod F to descend into the mold, with the wire rod F approaching the fixed iron side wall M of the mold. When the anti-detachment plate 203 descends to near the iron side wall, the electric cylinder 202a drives the anti-detachment plate 203 to rise, avoiding the fixed iron side wall M. Meanwhile, the bottom plate 204 and the pressing plate 206 continue to descend under the robot's guidance. After descending to the correct position, the pressing plate 206 is raised, and the miniature cylinder on the bottom plate 204 pushes the wire rod F towards the fixed iron side wall M. The stator coil molding equipment fixes the wire rod F, and the X-axis power mechanism 201 drives the bottom plate 204 to move away from the wire rod F, achieving detachment.

[0047] Finally, it should be emphasized that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bar loading and unloading device for stator coil molding process, characterized in that: The bar loading and unloading device includes a fixing unit, a first clamping mechanism disposed on the fixing unit, and at least two second clamping mechanisms. The fixing unit includes a mounting beam and a flange fixing seat for connection with a robot. The flange fixing seat is installed in the middle of the mounting beam. The first clamping mechanism is fixedly connected to the middle of the mounting beam, and the second clamping mechanisms are installed on the mounting beams located on both sides of the first clamping mechanism. The bar loading and unloading device also includes at least two Y-axis power mechanisms, which are installed at intervals on the mounting beam. Each Y-axis power mechanism has a second clamping mechanism connected to its power output end. The Y-axis power mechanism drives the second clamping mechanism to reciprocate along the mounting beam in a straight line. The first clamping mechanism and the second clamping mechanism have the same structure, both including an X-axis power mechanism, an anti-detachment plate driven by a first Z-axis mechanism, a bottom plate connected to the X-axis power mechanism, and a pressing plate driven by a second Z-axis mechanism. The first Z-axis mechanism is fixedly connected to the X-axis power mechanism, and the second Z-axis mechanism is connected to the X-axis power mechanism. The bottom plate has a horizontally arranged base support, the pressing plate is located above the base support, and the anti-detachment plate is arranged at intervals with the anti-detachment plate. The X-axis power mechanism of the second clamping mechanism is connected to the Y-axis power mechanism, and the X-axis power mechanism of the first clamping mechanism is fixed to the mounting beam.

2. The bar loading and unloading device for stator coil molding process according to claim 1, characterized in that: The Y-axis power mechanism includes a Y-axis linear motor, a Y-axis linear module fixed to the bottom of the mounting beam, and a Y-axis slider that reciprocates linearly along the Y-axis linear module. The X-axis power mechanism includes a mounting base, an X-axis linear motor, an X-axis linear module driven by the X-axis linear motor, and an X-axis slider that reciprocates along the X-axis linear module. The X-axis linear module and the first Z-axis mechanism are fixedly connected to the mounting base. The top of the bottom plate has a horizontally arranged upper mounting part, which is fixedly connected to the X-axis slider. The mounting base of the first clamping mechanism is fixedly connected to the bottom center of the mounting beam, and the mounting base of the second clamping mechanism is fixedly connected to the Y-axis slider of the Y-axis power mechanism.

3. The bar loading and unloading device for stator coil molding process according to claim 2, characterized in that: The first Z-axis mechanism includes a vertically arranged electric cylinder, a pair of guide rails connected to the power output end of the electric cylinder, and a pair of sliders fixed to the end of the X-axis linear module or the Y-axis moving seat. The electric cylinder drives the two guide rails to reciprocate up and down along the two sliders. The anti-detachment plate is fixed to the lower part of the two guide rails, and the middle part of the anti-detachment plate protrudes towards the bottom plate to form an anti-detachment boss.

4. The bar loading and unloading device for stator coil molding process according to claim 3, characterized in that: The tops of the two guide rails are connected by a connecting plate, which is connected to the electric cylinder.

5. The bar loading and unloading device for stator coil molding process according to claim 4, characterized in that: The pressing plate has a clearance groove to avoid the vertical portion of the bottom plate, allowing the bottom plate to pass through; the second Z-axis mechanism includes mounting plates fixed to both sides of the upper mounting portion and linear electric cylinders fixed to each mounting plate vertically, and the linear electric cylinders are all connected to the pressing plate.

6. The bar loading and unloading device for stator coil molding process according to claim 2, characterized in that: The wire rod loading and unloading device also includes multiple positioning mechanisms for pushing the wire rod into the mold. Each vertical part of the bottom plate is provided with a positioning mechanism to push the wire rod towards the anti-detachment plate.

7. The bar loading and unloading device for stator coil molding process according to claim 6, characterized in that: The vertical part of the bottom plate is provided with an installation groove. The positioning mechanism includes a mini cylinder disposed in the installation groove and a positioning block connected to the mini cylinder. The stroke of the mini cylinder is 8mm to 15mm.

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