Mutual inductor riveting device

Abstract

The utility model relates to the technical field of mutual inductors, in particular to a mutual inductor riveting device which comprises a rack, and the rack is provided with an installation mold used for fixing a mutual inductor and a copper plate, a pressing mechanism used for pressing rivets and a driving mechanism used for driving the pressing mechanism to press downwards. The mounting mold is provided with first avoiding holes used for avoiding downward movement of the rivets in the riveting process, the pressing and holding mechanism is provided with profiling grooves used for being matched with the head shapes of the rivets, by means of the arrangement of the mounting mold, the mounting mold can preliminarily fix the positions of the copper plate and the iron core, and the two rivets are placed in the corresponding matching holes; the positions of the copper plate and the iron core are further limited; the driving mechanism can drive the pressing and holding mechanism to press the rivet placed in the matching hole, and along with continuous force application of the pressing and holding mechanism, the rivet can be stably riveted and fixed with the iron core and the copper plate, so that the iron core can form a complete closed loop.

Description

Technical Field

[0001] This application relates to the field of current transformer technology, and in particular to a current transformer riveting device. Background Technology

[0002] Reference Figure 1 Instrument transformers, also known as instrument transformers, are a general term for current transformers and voltage transformers. They are primary devices that enable the interconnection between primary and secondary electrical systems. The structure of an instrument transformer includes an iron core 1 and a coil frame 2 for mounting the coil. The coil frame 2 is fixed on the iron core 1. The iron core 1, which is initially produced, is usually provided with an open slot 11. The open slot 11 is provided to facilitate the installation of the coil frame 2. However, for the instrument transformer to conduct current, the iron core 1 needs to form a complete closed circuit. Therefore, the iron core 1 on the instrument transformer needs to be closed in the later stage.

[0003] Reference Figure 1 Currently, the closing operation of the iron core 1 requires the use of copper plate 3 and rivets 4. That is, copper plate 3 is fixed at the opening slot 11 of the iron core 1 by riveting. The iron core 1 is completely closed under the connection of copper plate 3. Both the opening slot 11 of the iron core 1 and the copper plate 3 are symmetrically provided with mating holes 31 for cooperating with rivets 4. There are two rivets 4 on both the copper plate 3 and the iron core 1. When the riveting is completed, the two rivets 4 should pass through the mating holes 31 on the iron core 1 and the copper plate 3 respectively. In actual operation, the operator first fixes the iron core 1 on the operating table, then manually places the two rivets 4 into the corresponding mating holes 31 respectively, and finally uses a stamping machine to stamp the two rivets 4 at the same time, so that the rivets 4 completely pass through the mating holes 31 on the iron core 1 and the copper plate 3, thereby riveting and fixing the copper plate 3 to the iron core 1.

[0004] Reference Figure 1 However, this method of fixing the copper plate 3 by stamping can easily damage the rivet 4 or the iron core 1 due to excessive stamping pressure, thus affecting the subsequent conductivity of the iron core 1, and there is room for improvement. Utility Model Content

[0005] To improve the riveting quality, this application provides a current transformer riveting device.

[0006] This application provides a transformer riveting device, which adopts the following technical solution:

[0007] A current transformer riveting device includes a frame, on which are provided an installation mold for fixing a current transformer and a copper plate, a pressing mechanism for pressing a rivet, and a driving mechanism for driving the pressing mechanism to press down. The installation mold is provided with a first clearance hole for preventing the rivet from moving down during the riveting process, and the pressing mechanism is provided with a contour groove for adapting to the shape of the rivet head.

[0008] By adopting the above technical solution, the installation mold can initially fix the positions of the copper plate and the iron core, and make the mating holes on the iron core and the copper plate coaxial. The two rivets are placed in the corresponding mating holes, further defining the positions of the copper plate and the iron core. With the setting of the holding mechanism and the driving mechanism, the driving mechanism can drive the holding mechanism to press down the rivets placed in the mating holes. At the same time, with the setting of the contour groove, it is ensured that the rivets can be tightly abutted against the contour groove during the riveting process without misalignment, which improves the accuracy and stability of riveting. With the continuous application of force by the holding mechanism, the rivets can be firmly riveted and fixed to the iron core and the copper plate, so that the iron core can form a complete closed loop.

[0009] Preferably, the mounting mold includes an upper mold and a lower mold, the upper mold and the lower mold are detachably connected, the upper mold is provided with a first mounting groove that is embedded in the copper plate and a second mounting groove that is embedded in the iron core, and the first mounting groove and the second mounting groove are connected.

[0010] By adopting the above technical solution, the upper mold and the lower mold are detachably connected, which makes it convenient for workers to assemble, disassemble and maintain the upper mold and the lower mold. At the same time, the setting of the first mounting groove and the second mounting groove allows the copper plate and the iron core to be stably fixed on the upper mold.

[0011] Preferably, the pressing mechanism is provided with a second clearance hole for avoiding the coil frame.

[0012] By adopting the above technical solution and utilizing the setting of the second clearance hole, the possibility of damage to the coil frame due to interference during the riveting process is effectively avoided.

[0013] Preferably, a connecting rod and a buffer are provided between the upper mold and the lower mold, and the buffer is provided on the connecting rod.

[0014] By adopting the above technical solution, the connection between the upper and lower dies is achieved using a connecting rod. At the same time, the buffer component provides buffer protection for the upper die and the rivet during the pressing process of the holding mechanism.

[0015] Preferably, the buffer is a spring, which is sleeved on the connecting rod, with one end of the spring forming an abutment fit with the connecting rod and the other end forming an abutment fit with the lower mold.

[0016] By adopting the above technical solution and utilizing the spring, during the pressing of the rivet by the holding mechanism, the elastic force generated by the spring due to elastic deformation can buffer the mounting mold and the rivet. At the same time, when the riveting is completed, the elastic force generated by the spring resetting can spring out part of the riveted iron core from the second mounting groove, making it easier for the staff to remove the riveted iron core later.

[0017] Preferably, the pressing mechanism includes a balance plate and a pressing plate for pressing the rivet. The balance plate is disposed on the drive mechanism, and the pressing plate is disposed on the balance plate. The balance plate is symmetrically provided with balance guides for maintaining balance during the pressing process.

[0018] By adopting the above technical solution, and by using the setting of the balance guide and balance plate, the drive mechanism can reduce left and right swaying during the riveting process to maintain balance. This, in turn, enables the balance plate and the pressure plate to maintain balance during the riveting process, reducing the possibility of rivet damage or poor riveting caused by uneven force on the pressure plate.

[0019] Preferably, the balancing guide includes a guide post and a sleeve, the frame is provided with a sliding hole for sliding engagement with the guide post, and the sleeve is sleeved on the guide post and connected to the balancing plate.

[0020] By adopting the above technical solution, the guide column is designed to maintain balance during the up-and-down movement of the drive mechanism. At the same time, the sleeve is designed to support the guide column during its sliding process, and the sleeve increases the contact area with the balance plate, thereby making the connection between the balance guide and the balance plate more stable.

[0021] Preferably, the lower mold is provided with a sliding block, the frame is provided with a guide rail, and the sliding block is slidably disposed on the guide rail.

[0022] By adopting the above technical solution and using the guide rail, the sliding of the lower mold is made smooth and reliable, while also facilitating the feeding and unloading of materials by the staff.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By using the installation mold, the position of the copper plate and the iron core can be initially fixed, and the mating holes on the iron core and the copper plate are coaxially arranged. Two rivets are placed in the corresponding mating holes, further defining the position of the copper plate and the iron core. By using the holding mechanism and the driving mechanism, the driving mechanism can drive the holding mechanism to press down the rivets placed in the mating holes. At the same time, the contour groove ensures that the rivets can be tightly abutted against the contour groove during the riveting process without misalignment, improving the accuracy and stability of the riveting. With the continuous force applied by the holding mechanism, the rivets can be firmly riveted and fixed to the iron core and the copper plate, so that the iron core can form a complete closed loop.

[0025] 2. By utilizing the spring setting, during the pressing of the rivet by the holding mechanism, the elastic force generated by the spring due to elastic deformation can buffer the mounting mold and the rivet. At the same time, when the riveting is completed, the elastic force generated by the spring returning to its original position can spring out part of the riveted iron core from the second mounting groove, making it easier for the workers to remove the riveted iron core later.

[0026] 3. The guide rail design ensures smooth and reliable sliding of the lower mold, while also facilitating material feeding and unloading by workers. Attached Figure Description

[0027] Figure 1 This is an exploded view of the riveting relationship between the rivets, iron core, and copper plate, which is the main feature of the background technology.

[0028] Figure 2 This is an isometric schematic diagram of the main overall structure in the embodiments of this application;

[0029] Figure 3 This is a cross-sectional view in the embodiments of this application that mainly illustrates the connection relationship between the support rod, the installation mold, and the lower mold;

[0030] Figure 4 This is a structural schematic diagram illustrating the connection relationship between the electric cylinder and the lower mold in the embodiments of this application;

[0031] Figure 5 This is a structural diagram illustrating the connection relationship between the installation module and the connection module in the embodiments of this application;

[0032] Figure 6 This is a cross-sectional view in the embodiments of this application that mainly illustrates the connection relationship between the connecting rod, the installation mold, and the lower mold;

[0033] Figure 7 This is a structural diagram illustrating the connection relationship between the holding mechanism and the driving mechanism in the embodiments of this application.

[0034] Reference numerals: 1. Iron core; 11. Opening slot; 2. Coil frame; 3. Copper plate; 31. Mating hole; 4. Rivet; 5. Frame; 51. Base plate; 511. Guide rail; 52. Vertical plate; 53. Connecting plate; 531. Second clearance hole; 532. Sliding hole; 6. Mounting mold; 61. First clearance hole; 62. Upper mold; 621. Mounting mold; 6211. First mounting groove; 6212. Clearance groove; 6213. Connecting hole; 622. Connecting mold; 6221. Second mounting groove; 63. Lower mold; 631. Sliding block; 632. Electric cylinder; 633. Plug-in hole; 634. Adaptor groove; 64. Connecting rod; 641. Fixing part; 642. Connecting part; 65. Buffer; 651. Spring; 66. Support rod; 661. Head; 662. Support part; 663. Blocking part; 7. Holding mechanism; 71. Contouring groove; 72. Balance plate; 73. Holding plate; 731. Third clearance hole; 74. Balance guide; 741. Guide post; 742. Sleeve; 7421. Sliding part; 7422. Holding part; 8. Drive mechanism; 81. Cylinder. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail.

[0036] This application discloses a current transformer riveting device.

[0037] Reference Figure 2 and Figure 3 A current transformer riveting device includes a frame 5, on which are provided an installation mold 6 for placing a current transformer and a copper plate 3, a pressing mechanism 7 for pressing a rivet 4, and a driving mechanism 8 for driving the pressing mechanism 7 to press down. The installation mold 6 is provided with a first clearance hole 61 for avoiding the downward movement of the rivet 4 during the riveting process.

[0038] Reference Figure 2 and Figure 3 By using the installation mold 6, the installation mold 6 can initially fix the positions of the copper plate 3 and the iron core 1, and make the mating holes 31 on the iron core 1 and the copper plate 3 coaxially set, and the two rivets 4 are placed in the corresponding mating holes 31, which reduces the possibility of misalignment of the iron core 1 and the copper plate 3 during the riveting process, and further limits the position of the copper plate 3 and the iron core 1, thereby facilitating the subsequent riveting operation.

[0039] Reference Figure 3 and Figure 4With the setting of the holding mechanism 7 and the driving mechanism 8, the driving mechanism 8 can drive the holding mechanism 7 to press down the rivet 4 placed in the mating hole 31. The holding mechanism 7 is provided with a contour groove 71 for adapting to the shape of the rivet head. With the setting of the contour groove 71, it is ensured that the rivet 4 can be tightly abutted against the contour groove 71 during the riveting process without misalignment, which improves the accuracy and stability of riveting. As the holding mechanism 7 continues to apply force, the rivet 4 can gradually enter the first clearance hole 61, so that the rivet 4 can be firmly riveted and fixed with the iron core 1 and the copper plate 3, so that the iron core 1 can form a complete closed loop.

[0040] Reference Figure 2 The frame 5 includes a base plate 51 and vertical plates 52. Two vertical plates 52 are vertically arranged and symmetrically arranged on the base plate 51. Each vertical plate 52 is connected to the base plate 51 by bolts. A connecting plate 53 is provided on both vertical plates 52. Each vertical plate 52 is connected to the connecting plate 53 by bolts. Thus, a working space for riveting operations is formed between the base plate 51, the vertical plates 52 and the connecting plate 53. The mounting mold 6 is located in the working space and is slidably arranged on the base plate 51. The pressing mechanism 7 and the driving mechanism 8 are both arranged on the connecting plate 53.

[0041] Reference Figure 2 and Figure 5 The installation mold 6 includes an upper mold 62 and a lower mold 63. The upper mold 62 and the lower mold 63 are detachably connected. The upper mold 62 includes a rectangular installation mold 621 and a frame-shaped connecting mold 622. The connecting mold 622 is set to the size of the installation mold 621 and is located above the installation mold 621. The connecting mold 622 is connected to the installation mold 621 by bolt threads.

[0042] Reference Figure 2 and Figure 5 The lower mold 63 is symmetrically equipped with sliding blocks 631. Any sliding block 631 is connected to the lower mold 63 by bolt thread. The base plate 51 is equipped with guide rails 511 corresponding to the position and number of sliding blocks 631. Any guide rail 511 is connected to the base plate 51 by bolt thread. Any sliding block 631 is slidably set on the corresponding guide rail 511. The arrangement of two guide rails 511 makes the sliding of the lower mold 63 more stable and reliable, and at the same time facilitates the workers to put in and take out materials. In actual operation, when it is necessary to install copper plate 3 and iron core 1, drive the installation mold 6 to slide to the edge of the base plate 51 to put in materials. After the materials are put in, drive the installation mold 6 to slide below the pressing mechanism 7. After the riveting is completed, drive the installation mold 6 to slide to the edge of the base plate 51 to take out materials, thereby improving the convenience and safety of operation.

[0043] Reference Figure 4 and Figure 5An electric cylinder 632 is connected to the lower mold 63 via a flange. The piston rod of the electric cylinder 632 is threadedly connected to the lower mold 63, and the length direction of the electric cylinder 632 is parallel to the sliding direction of the guide rail 511. Thus, by operating the electric cylinder 632, the lower mold 63 can be driven to slide and extend on the guide rail 511.

[0044] Reference Figure 1 and Figure 5 The mounting mold 621 is provided with a first mounting groove 6211 for embedding with the copper plate 3. The hollow part in the middle of the connecting mold 622 and the upper surface of the mounting mold 621 form a second mounting groove 6221. The second mounting groove 6221 is used to embed with the iron core 1. The first mounting groove 6211 and the second mounting groove 6221 are connected.

[0045] Reference Figure 3 and Figure 5 The first clearance hole 61 is provided on the mounting mold 621 and is connected to the first mounting groove 6211. The mounting mold 621 is also provided with a clearance groove 6212 for placing the coil frame 2. By using the first mounting groove 6211, the second mounting groove 6221 and the clearance groove 6212, the iron core 1 and the coil frame 2 can be stably fixed on the upper mold 62.

[0046] Reference Figure 5 and Figure 6 The mounting mold 621 has connection holes 6213 at each of its four corners. A connecting rod 64 is installed in any of the connection holes 6213 of the mounting mold 621. A buffer 65 is installed on any of the connecting rods 64. The connecting rods 64 and the buffer 65 are both located between the mounting mold 621 and the lower mold 63. Each connecting rod 64 includes a fixing part 641 and a connecting part 642. The fixing part 641 and the connecting part 642 are integrally formed. The fixing part 641 of the connecting rod 64 is inserted into the corresponding connection hole 6213. The lower mold 63 has insertion holes 633 and adapter grooves 634 for placing buffers 65 at the corresponding positions and numbers of the connection holes 6213. The insertion holes 633 and the adapter grooves 634 are connected. The connecting part 642 of any connecting rod 64 is inserted into the corresponding insertion hole 633. The upper surface of the fixing part 641 of any connecting rod 64 is in abutment with the lower surface of the connecting mold 622.

[0047] Reference Figure 6 In this embodiment, the buffer 65 is set as a spring 651. The spring 651 is sleeved on the connecting part 642 of the connecting rod 64, and one end of the spring 651 forms an abutting fit with the lower surface of the fixing part 641 of the connecting rod 64, and the other end forms an abutting fit with the bottom surface of the adapter groove 634.

[0048] Reference Figure 2 and Figure 5 By utilizing the springs 651, the elastic force generated by the elastic deformation of the four corner springs 651 during the downward movement of the pressing mechanism 7 pressing the rivet 4 can buffer the mounting mold 621 and the rivet 4. At the same time, when the pressing mechanism 7 rises and resets after riveting, the four springs 651 will also elastically reset. At this time, because the springs 651 generate elastic force when resetting, the elastic force will spring out part of the riveted iron core 1 from the second mounting groove 6221, making it easier for the staff to remove the riveted iron core 1 later.

[0049] Reference Figure 3 A support rod 66 is also provided between the mounting mold 621 and the lower mold 63. Multiple support rods 66 are provided. In this embodiment, two support rods 66 are provided. Each support rod 66 includes a head 661 and a support part 662. The head 661 and the support part 662 of each support rod 66 are integrally formed. The support part 662 of each support rod 66 passes through the lower mold 63 from bottom to top. Each support rod 66 is located above the sliding block 631. Due to the influence of gravity, the lower surface of the head 661 of each support rod 66 forms an abutment fit with the upper surface of the sliding block 631. Thus, each support rod 66 can be stably fixed on the lower mold 63, and each support part 662 forms an insertion fit with the first clearance hole 61 on the mounting mold 621.

[0050] Reference Figure 3 and Figure 7 Any support portion 662 has an integrally formed blocking portion 663. During the process of pressing down the rivet 4 by the holding plate 73, the blocking portion 663 can limit the insertion thickness of the support portion 662 in the first clearance hole 61, thereby limiting the compression range of the spring 651.

[0051] Reference Figure 2 and Figure 7 The holding mechanism 7 includes a balance plate 72 and a holding plate 73 for holding the rivet 4. The balance plate 72 is mounted on the drive mechanism 8, and the holding plate 73 is mounted on the balance plate 72. Balance guides 74 are symmetrically arranged on the balance plate 72 to maintain balance during the holding process.

[0052] Reference Figure 2 and Figure 4 In this embodiment, the drive mechanism 8 is set as a cylinder 81, which is connected to the balance plate 72 by bolt thread. The connecting plate 53 is provided with a second clearance hole 531 for avoiding the piston rod of the cylinder 81 and a sliding hole 532 for forming a sliding fit with the balance guide 74. There are two sliding holes 532 corresponding to the position and number of the balance guide 74.

[0053] Reference Figure 7Since the two balance guides 74 have the same structure and connection method, we will now describe one of the balance guides 74 as an example. The balance guide 74 includes a guide post 741 and a sleeve 742. The sleeve 742 is sleeved on the guide post 741. The sleeve 742 includes a sliding part 7421 and a pressing part 7422. The sliding part 7421 and the pressing part 7422 are integrally formed, and the length of the sliding part 7421 is greater than 1 / 3 of the length of the guide post 741.

[0054] Reference Figure 2 and Figure 7 The sliding part 7421 and the corresponding sliding hole 532 form a guide sliding fit, so that the sliding part 7421 can support the guide post 741 during the sliding process; the pressing part 7422 is disposed between the connecting plate 53 and the balance plate 72, and the balance plate 72 and the side of the pressing part 7422 away from the connecting plate 53 are connected by bolt threads, so that the pressing part 7422 increases the contact area with the balance plate 72, thereby making the connection between the balance guide 74 and the balance plate 72 more stable.

[0055] Reference Figure 2 and Figure 7 By using the guide post 741 and sleeve 742, the piston rod of cylinder 81 can reduce shaking and maintain balance during the riveting process, thereby driving the balance plate 72 and the pressure plate 73 to maintain balance during the riveting process, reducing the possibility of rivet 4 being damaged or poor riveting due to uneven force on the pressure plate 73.

[0056] Reference Figure 1 and Figure 4 The pressure plate 73 and the balance plate 72 are connected by bolt threads. The contour groove 71 is provided on the pressure plate 73. Since the pressure plate 73 and the balance plate 72 are detachable, and the contour groove 71 on the pressure plate 73 can be adapted to rivets 4 of different shapes, the operator can install the corresponding pressure plate 73 on the balance plate 72 as needed. In this embodiment, the rivet 4 is a semi-circular head rivet 4, and the contour groove 71 is set in a semi-circular shape corresponding to the head shape of the rivet 4. The pressure plate 73 is provided with a third clearance hole 731 for avoiding the coil frame 2. By using the third clearance hole 731, the possibility of damage to the coil frame 2 due to interference during the riveting process can be effectively avoided.

[0057] The implementation principle of this application embodiment is as follows: In actual operation, the operator turns on the power to start the equipment, first operates the electric cylinder 632 to drive the lower mold 63 and the upper mold 62 installed on the lower mold 63 to slide to the edge of the base plate 51. The operator first places the copper plate 3 in the first mounting groove 6211, and then places the iron core 1 in the second mounting groove 6221. At the same time, the operator ensures that the mating hole 31 of the iron core 1 and the mating hole 31 of the copper plate 3 are coaxially set, and the first clearance groove 6212 is used to avoid the coil frame 2 fixed on the iron core 1.

[0058] After the copper plate 3 and the iron core 1 are installed, the electric cylinder 632 is operated to drive the lower mold 63 to slide below the pressing mechanism 7. Then, the cylinder 81 is operated to drive the balance plate 72 to press down, thereby driving the pressing plate 73 to press down the rivet 4. During the pressing process, the balance guide 74 ensures that the pressing mechanism 7 remains balanced. At the same time, the contour groove 71 of the pressing plate 73 is in close contact with the head 661 of the rivet 4. As the pressing mechanism 7 continues to apply force, the rivet 4 is riveted into the mating hole 31 of the copper plate 3 and the iron core 1.

[0059] After riveting is completed, the operating cylinder 81 drives the balance plate 72 and the pressure plate 73 to rise and reset. At this time, the spring 651 also performs elastic reset, which pops part of the riveted iron core 1 out of the second mounting groove 6221 for easy removal later.

[0060] Finally, the electric cylinder 632 is operated to move the lower mold 63 and the riveted iron core 1 to the edge of the base plate 51. The operator can then easily remove the riveted current transformer, thus completing a riveting process. This achieves automated riveting of the iron core 1 and the copper plate 3. The above operations are repeated.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A current transformer riveting device, characterized in that: The device includes a frame (5), on which are provided an installation mold (6) for fixing the current transformer and the copper plate, a pressing mechanism (7) for pressing the rivet, and a driving mechanism (8) for driving the pressing mechanism (7) to press down. The installation mold (6) is provided with a first clearance hole (61) for preventing the rivet from moving down during the riveting process, and the pressing mechanism (7) is provided with a contour groove (71) for adapting to the shape of the rivet head.

2. The transformer riveting device according to claim 1, characterized in that: The mounting mold (6) includes an upper mold (62) and a lower mold (63). The upper mold (62) and the lower mold (63) are detachably connected. The upper mold (62) is provided with a first mounting groove (6211) that is embedded in the copper plate and a second mounting groove (6221) that is embedded in the iron core. The first mounting groove (6211) and the second mounting groove (6221) are connected.

3. The transformer riveting device according to claim 1, characterized in that: The pressing mechanism (7) is provided with a second clearance hole (531) for avoiding the coil frame.

4. The transformer riveting device according to claim 2, characterized in that: A connecting rod (64) and a buffer (65) are provided between the upper mold (62) and the lower mold (63), and the buffer (65) is provided on the connecting rod (64).

5. A transformer riveting device according to claim 4, characterized in that: The buffer (65) is configured as a spring (651), which is sleeved on the connecting rod (64). One end of the spring (651) forms an abutment fit with the connecting rod (64), and the other end forms an abutment fit with the lower mold (63).

6. The transformer riveting device according to claim 1, characterized in that: The pressing mechanism (7) includes a balance plate (72) and a pressing plate (73) for pressing rivets. The balance plate (72) is disposed on the driving mechanism (8), and the pressing plate (73) is disposed on the balance plate (72). The balance plate (72) is symmetrically provided with balance guides (74) for maintaining balance during the pressing process.

7. A transformer riveting device according to claim 6, characterized in that: The balance guide (74) includes a guide post (741) and a sleeve (742). The frame (5) is provided with a sliding hole (532) for sliding cooperation with the guide post (741). The sleeve (742) is sleeved on the guide post (741) and the sleeve (742) is connected to the balance plate (72).

8. A transformer riveting device according to claim 2, characterized in that: The lower mold (63) is provided with a sliding block (631), and the frame (5) is provided with a guide rail (511). The sliding block (631) is slidably disposed on the guide rail (511).

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