Electromagnetic relay leveling tool and use method thereof

Abstract

The invention discloses a leveling tool of an electromagnetic relay and a using method thereof, and relates to the technical field of relays, the leveling tool comprises a supporting mold, a pair of movable molds, a locking assembly and a blocking assembly, two transverse grooves are formed in the upper surface of the supporting mold, and when bakelite is arranged on the supporting mold, tail pieces are inserted into the transverse grooves; rotating shafts are arranged at the positions, close to the upper edge, of the left and right side walls of the supporting mold, and the pair of movable molds are arranged on the two sides of the supporting mold and rotationally connected with the supporting mold through the rotating shafts; the movable molds are buckled on the two sides of bakelite, the first stress plate on the right side is lightly smashed through a small hammer, so that the first push rod pushes the first push plate to flush all the bakelite left and right, the second push rod pushes the second push plate to flush all the bakelite up and down through the second stress plate on the top, use is convenient, operation is easy, and practicability is high. The overall flattening efficiency is improved, the connecting pieces cannot be damaged, and the product quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of relays, in particular to a leveling tool for electromagnetic relays and a method for using the same. BACKGROUND

[0002] ‌An electromagnetic relay is composed of an electromagnetic system and a contact system, and the connection and disconnection of the contact system are completed by the magnetic force of the electromagnetic system and the linkage between the armature and the pull rod. In the contact system, the alignment of the dynamic and static contact points is a requirement for ensuring the flexibility and reliability of the relay, and the leveling and verticality of the static contact point group is one of the conditions for the alignment of the dynamic and static contact points. After the electromagnetic relay has been in operation for a certain period of time, the long bolt may become loose due to the impact and vibration during the operation of the dynamic and static contact points, and the tabs and tail pieces of the static contact point group may not be aligned, which may cause abnormal contact points. To avoid this, technicians will regularly align the static contact point group to ensure its leveling and verticality.

[0003] The existing leveling method for the static contact point group is mainly manual operation, in which the personnel use a small hammer to lightly hit each bakelite from top to bottom and left to right while supporting the mold. However, this method has the following disadvantages: on the one hand, the existing mold only serves as a support and does not significantly improve the convenience of manual operation or the efficiency of leveling, and on the other hand, the direct hitting method with a small hammer may cause the personnel to hit off-target and damage the tabs, resulting in unnecessary losses. In addition, the existing method has poor alignment and leveling effect and needs to be improved. SUMMARY

[0004] To overcome the above-mentioned deficiencies of the prior art, the present application provides a leveling tool for electromagnetic relays and a method for using the same. The movable mold is buckled on both sides of the bakelite, the first push rod pushes the first push plate to level all the bakelites from left to right by lightly hitting the right side of the first stress plate with a small hammer, and the second push rod pushes the second push plate to level all the bakelites from top to bottom by the second stress plate on the top. The method is convenient and easy to operate, improves the overall leveling efficiency, does not damage the tabs, and ensures product quality.

[0005] In order to achieve the above object, the present application is realized by the following technical scheme: A leveling tool of an electromagnetic relay, the electromagnetic relay comprising a contact group and an electromagnetic group, the contact group and the electromagnetic group being arranged in front of and behind each other, the contact group comprising a plurality of one-to-one corresponding contact pieces, tail pieces and bakelite, the contact pieces and the tail pieces being vertically arranged on the bakelite and being fixed to the plurality of bakelites by a pair of long bolts, comprising a supporting mold, a pair of movable molds, a locking assembly and a blocking assembly, two horizontal grooves being formed on the upper surface of the supporting mold, the tail pieces being inserted into the horizontal grooves when the bakelite is seated on the supporting mold, a rotating shaft being arranged on the left and right side walls of the supporting mold near the upper edge, the pair of movable molds being arranged on the two sides of the supporting mold and being rotatably connected to the supporting mold by the rotating shafts, the locking assembly being arranged on the front side wall of the pair of movable molds, the pair of movable molds being able to be fixed by the locking assembly when being turned inward to a vertical state, and the distance between the pair of movable molds being greater than the width of the bakelite when being vertical, the blocking assembly being arranged on the movable mold on the left side and being able to block the left side of the bakelite, a first rectangular through hole being formed on the center position of the movable mold on the right side, a first push rod with a rectangular cross section being movably arranged in the first rectangular through hole, a first push plate being arranged on the corresponding inner side of the first push rod and a first stress plate being arranged on the outer side of the first push rod, the length of the first push plate being greater than the length of the plurality of arranged bakelites, the first push plate being able to hit the right side of the bakelite when being moved to the left, the height of the movable mold when being vertical being greater than the height of the bakelite, and a mounting plate being arranged on the top of the movable mold and extending inward, the mounting plate extending above the top edge of the bakelite, a second rectangular through hole being vertically formed on the mounting plate on both sides, a second push rod with a rectangular cross section being movably arranged in the second rectangular through hole, a second push plate being arranged on the lower end of the second push rod and a second stress plate being arranged on the upper end of the second push rod, the length of the second push plate being greater than the length of the plurality of arranged bakelites, the second push plate being able to hit the top edge of the bakelite when being moved downward.

[0006] Preferably, the locking assembly comprises a fixed plate, a rotating column and a clamping column, the fixed plate being rotatably arranged on the front end face of the movable mold on the left side by the rotating column, the clamping column being fixedly arranged on the front end face of the movable mold on the right side, a clamping groove being formed on the bottom of the fixed plate, the fixed plate being able to be buckled on the clamping column by rotating when the pair of movable molds are vertical.

[0007] Preferably, a rubber pad is arranged in the clamping groove, and the clamping column is interference-fitted with the rubber pad.

[0008] Preferably, the blocking assembly comprises a threaded column, a baffle and a pair of limiting rods, a threaded hole being formed on the center position of the movable mold on the left side, the threaded column being screwed into the threaded hole, the inner side of the threaded column being rotatably connected with the side wall of the baffle, a rotating handle being fixedly arranged on the outer side of the threaded column, the pair of limiting rods being fixedly arranged on the two sides of the side wall of the baffle, and the limiting rods being movably penetrated into the movable mold on the left side.

[0009] Preferably, the baffle and the first push plate are provided with grooves corresponding to the position of the movable mold, and the baffle and the first push plate can retract into the grooves.

[0010] Preferably, when the movable mold rotates to the vertical state, the side wall of the movable mold abuts against the edge of the upper surface of the supporting mold.

[0011] Preferably, the rear side of the upper surface of the supporting mold is provided with a positioning groove, and the electromagnetic group is arranged in the positioning groove when the bakelite is arranged on the upper surface of the supporting mold.

[0012] A method for using the leveling tool of the electromagnetic relay, comprising the following steps: I. The personnel loosen the long bolts on the bakelite to ensure that the bakelite can be adjusted, place the electromagnetic relay on the supporting mold, insert the tail piece into the horizontal groove of the supporting mold, and arrange the bakelite on the upper surface of the supporting mold; II. The personnel adjust the blocking assembly on the left movable mold according to the width of the bakelite obtained by measuring the model of the electromagnetic relay to be measured, so that the blocking assembly can abut against the left side of the bakelite; III. The personnel rotate the left movable mold clockwise and rotate the right movable mold counterclockwise until the two movable molds are vertical, and then lock the two movable molds through the locking assembly; IV. The personnel lightly hit the first stress plate on the right movable mold with a hammer, the first stress plate drives the first push plate to hit the bakelite through the first push rod, and the blocking assembly is used to align the bakelite in the left-right direction, so that the tabs are aligned; V. The personnel lightly hit the second stress plate on the top mounting plate with a hammer, the second stress plate drives the second push plate to hit the top edge of the bakelite through the second push rod, and the supporting mold is used to align the bakelite in the up-down direction, so that the tabs are aligned; VI. The personnel tighten the long bolts with a screwdriver to fasten the aligned bakelite; VII. Open the locking assembly, unfold the pair of movable molds, remove the electromagnetic relay, and complete the alignment of the contact group of the electromagnetic relay.

[0013] The present application provides a leveling tool for electromagnetic relays and a method for using the same, which has the following advantages: 1. The movable mold is buckled on both sides of the bakelite, the first push rod pushes the first push plate to align all the bakelite in the left-right direction by lightly hitting the first stress plate on the right side with a hammer, the second push rod pushes the second push plate to align all the bakelite in the up-down direction by the second stress plate on the top, so that the tabs are aligned, which is convenient to use, easy to operate, improves the overall leveling efficiency, and does not damage the tabs, ensuring the product quality. In addition, the first push plate and the second push plate are designed in a whole, which simultaneously pushes multiple bakelites, and the alignment and leveling effect is improved. 2. The locking assembly in the application comprises a fixed plate and a clamping column, in use, the fixed plate on one side of the movable mold is rotated to make the clamping groove on the fixed plate buckle on the clamping column of the movable mold on the other side, so that the two movable molds are stable and cannot rotate, ensuring the smooth progress of the subsequent leveling work; the blocking assembly in the application comprises a threaded column and a baffle, rotating the threaded column can adjust the position of the baffle, so that it can be applied to different widths of bakelite, and the applicability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front view of the whole application; Figure 2 It is a schematic diagram of the front view of the whole application; Figure 3 It is a schematic diagram of the front view of the whole application; Figure 4 It is a schematic diagram of the front view of the whole application;

[0015] In the figure: 1, threaded hole; 2, handle; 3, threaded column; 4, movable mold; 5, rotating shaft; 6, tail piece; 7, transverse groove; 8, supporting mold; 9, electromagnetic assembly; 10, first stress plate; 11, first push rod; 12, first rectangular through hole; 13, groove; 14, first push plate; 15, second rectangular through hole; 16, second stress plate; 17, second push rod; 18, second push plate; 19, bakelite; 20, tab; 21, baffle; 22, mounting plate; 23, clamping groove; 24, clamping column; 25, fixed plate; 26, rotating column; 27, rubber pad; 28, limiting rod; 29, alignment groove; 30, long bolt. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0017] As Figures 1-4The utility model discloses a flat tool of electromagnetic relay, and the electromagnetic relay includes contact group and electromagnetic group 9, and contact group is arranged with electromagnetic group 9 before and after connection, the contact group includes multiple one-to-one contact piece 20, tail piece 6 and bakelite 19, and the contact piece 20 and tail piece 6 are vertically arranged on bakelite 19 and are fixed to multiple bakelites 19 through a pair of long bolts 30, including support mould 8, a pair of movable mould 4, locking assembly and blocking assembly, the upper surface of support mould 8 is provided with two horizontal grooves 7, when bakelite 19 is seated on support mould 8, tail piece 6 is inserted into horizontal groove 7, and the left and right side walls of support mould 8 are provided with rotating shaft 5 close to the position of upper edge, a pair of movable mould 4 are arranged on the both sides of support mould 8 and are rotatably connected with support mould 8 through rotating shaft 5, the locking assembly is arranged on the front side wall of a pair of movable mould 4, and a pair of movable mould 4 can be fixed through locking assembly when being rotated to vertical state to the inside, and the distance between a pair of movable mould 4 when vertical is greater than the width of bakelite 19, the blocking assembly is arranged on the movable mould 4 of left side, and the blocking assembly can block the left side of bakelite 19, and the center position of movable mould 4 of right side is provided with first rectangular through hole 12, the first rectangular through hole 12 is movably provided with the first push rod 11 of rectangular section, the first push rod 11 is provided with the first push plate 14 of corresponding inside one end and the first stress plate 10 of outside one end, and the length of first push plate 14 is greater than the length of multiple bakelites 19 arrangement, and first push plate 14 can hit the right side of bakelite 19 when moving to left, the height of movable mould 4 when vertical is greater than the height of bakelite 19, and the top of movable mould 4 is provided with the mounting plate 22 of inside extension, the mounting plate 22 extends to the top edge of bakelite 19, and the second rectangular through hole 15 of vertical is arranged on both sides mounting plate 22, and the second push rod 17 of rectangular section is movably arranged in the second rectangular through hole 15, the second push rod 17 is provided with the second push plate 18 of lower end and the second stress plate 16 of upper end, and the length of second push plate 18 is greater than the length of multiple bakelites 19 arrangement, and second push plate 18 can hit the top edge of bakelite 19 when moving downwards;The locking assembly includes fixed plate 25, rotating column 26 and clamping column 24, the fixed plate 25 is rotatably arranged on the front end face of left movable mould 4 through rotating column 26, the clamping column 24 is fixedly arranged on the front end face of right movable mould 4, the bottom of fixed plate 25 is provided with clamping groove 23, and when a pair of movable mould 4 are vertical, rotating fixed plate 25 can make clamping groove 23 buckle on clamping column 24;Rubber pad 27 is arranged in the clamping groove 23, and the clamping column 24 is interference fit with rubber pad 27.The blocking assembly comprises a threaded column 3, a baffle 21 and a pair of limiting rods 28, a threaded hole 1 is formed in the center position of the left movable mold 4, the threaded column 3 is screwed into the threaded hole 1, the inner side of the threaded column 3 is rotationally connected with the side wall of the baffle 21, the outer side of the threaded column 3 is fixedly provided with a handle 2, and the pair of limiting rods 28 are fixedly arranged on the two sides of the side wall of the baffle 21 and movably penetrate the left movable mold 4; the baffle 21 and the first push plate 14 are provided with grooves 13 corresponding to the positions of the movable mold 4, and the baffle 21 and the first push plate 14 can be retracted into the grooves 13; when the movable mold 4 is rotated to the vertical state, the side wall of the movable mold 4 abuts against the edge of the upper surface of the supporting mold 8; the upper surface of the supporting mold 8 is provided with a positioning groove 29 in the rear side, and the bakelite 19 is arranged on the upper surface of the supporting mold 8, and the electromagnetic group 9 is arranged in the positioning groove 29.

[0018] A method for using the leveling tool of the electromagnetic relay, and the steps are as follows: personnel loosen the long bolt 30 on the bakelite 19 to ensure that the bakelite can be adjusted, place the electromagnetic relay on the supporting mold 8, insert the tail piece 6 into the horizontal groove 7 of the supporting mold 8, and arrange the bakelite 19 on the upper surface of the supporting mold 8; personnel know the width of the bakelite 19 according to the model of the electromagnetic relay to be measured or through measurement, and then adjust the blocking assembly on the left movable mold 4 so that it can abut against the left side of the bakelite 19; personnel rotate the left movable mold 4 clockwise and rotate the right movable mold 4 counterclockwise until they are vertical, and then lock the two movable molds through the locking assembly; personnel lightly hit the first stress plate 10 on the right movable mold 4 with a hammer, the first stress plate 10 makes the first push plate 14 impact the bakelite 19 through the first push rod 11, and the bakelite 19 is leveled and aligned in the left-right direction through the cooperation of the blocking assembly, so that the connecting piece 20 is leveled and aligned; personnel lightly hit the second stress plate 16 on the top mounting plate 22 with a hammer, the second stress plate 16 makes the second push plate 18 impact the top edge of the bakelite 19 through the second push rod 17, and the bakelite 19 is leveled and aligned in the up-down direction through the cooperation of the supporting mold 8, so that the connecting piece 20 is leveled and aligned; personnel tighten the long bolt 30 with a screwdriver, so as to fasten the leveled bakelite 19; open the locking assembly, unfold the pair of movable molds 4, remove the electromagnetic relay, and complete the leveling and alignment of the contact group of the electromagnetic relay.

[0019] The detailed connection means is a known technology in the art, and the working principle and process are mainly introduced as follows: According to the description attached Figures 1-4It can be known that, when the application is used, firstly, personnel slightly loosen the long bolts 30 on the bakelite 19, ensure that the bakelite can be adjusted 19, place the electromagnetic relay on the supporting mold 8, insert the tail piece 6 into the horizontal groove 7 of the supporting mold 8, and the bakelite 19 sits on the upper surface of the supporting mold 8. The alignment groove 29 can also be opened on the rear side of the supporting mold 8, and when the bakelite 19 sits on the upper surface of the supporting mold 8, the electromagnetic group 9 is arranged in the alignment groove 29. The design of the alignment groove 29 can make the relay with a magnetic circuit also be used, and the use applicability is improved. In the application, the electromagnetic relay includes a front and rear arrangement of connecting contact group and electromagnetic group 9, the contact group includes a plurality of one-to-one contact pieces 20, tail pieces 6 and bakelite 19, the contact pieces 20 and the tail pieces 6 are vertically arranged on the bakelite 19 and are fixed to the plurality of bakelite 19 through a pair of long bolts 30. Herein, it is prior art.

[0020] Secondly, personnel know the width of the bakelite 19 according to the model of the electromagnetic relay to be measured or through measurement, adjust the blocking assembly on the left movable mold 4, so that it can abut against the left side of the bakelite 19. The purpose of the adjustment is to enable the first push plate 14 to perform the subsequent left and right direction flattening alignment work on the bakelite 19. One possible implementation of the blocking assembly includes a threaded column 3, a baffle 21 and a pair of limiting rods 28. The threaded column 3 is screwed into the threaded hole 1 opened in the center of the left movable mold 4, and the limiting rod 28 of the side wall of the baffle 21 is movably penetrated into the left movable mold 4. When working, personnel rotate the handle 2 from the outside, drive the threaded column 3 to rotate, and the threaded column 3 moves axially, and the limiting rod 28 of the baffle 21 connected with the threaded column 3 is limited, so it can also move, thereby adjusting the position, achieving the purpose of being applicable to bakelites 19 of different widths, and improving the applicability of the device. Herein, the threaded column 3 and the threaded hole 1 need to have a certain strength, and the axial force brought by the subsequent flattening alignment work needs to be considered. In addition, a groove 13 can also be opened in the position of the baffle 21 and the first push plate 14 corresponding to the movable mold 4, and the baffle 21 and the first push plate 14 can retract into the groove 13, leaving enough adjustment space.

[0021] Then, personnel clockwise rotate the left side of the movable mold 4, counterclockwise rotate the right side of the movable mold 4, until the vertical state, at this time, through a pair of movable mold 4 front wall locking assembly on the two locking, to ensure the stability of a pair of movable mold 4, to ensure the stability of the subsequent flat alignment work. Locking assembly a possible way to implement, locking assembly includes fixed plate 25, rotating column 26 and card column 24, fixed plate 25 through rotating column 26 rotatingly arranged at the front end of the left side of the movable mold 4, the card column 24 is fixedly arranged at the front end of the right side of the movable mold 4, the fixed plate 25 bottom is provided with a clamping groove 23. When working, after a pair of movable mold 4 is vertical, the personnel rotate the fixed plate 25 can make the clamping groove 23 buckle on the card column 24, under the condition of no external force, can ensure the stability of a pair of movable mold 4. In addition, rubber pad 27 can also be arranged in the clamping groove 23, the card column 24 and the rubber pad 27 are interference fit, increase the stability after the fixed plate 25 is fixed, not easy to fall off. Here, when the movable mold 4 is rotated to the vertical state, the side wall of the movable mold 4 can be brought into abutment with the upper surface edge of the support mold 8, so as to facilitate the personnel to control the accuracy of the vertical state of the movable mold 4.

[0022] Then, personnel with small hammer gently knock on the first stress plate 10 on the right side of the movable mold 4, such as Figure 2 and Figure 3 The arrow direction, the first stress plate 10 makes the first push plate 14 impact the bakelite 19 through the first push rod 11, the length of the first push plate 14 is greater than the length of the plurality of bakelite 19 arranged, and will not interfere with the electromagnetic group 9, in this way, the first push plate 14 cooperates with the blocking assembly to align the bakelite 19 in the left and right directions, so as to make the connecting piece 20 flat and aligned. Here, the cooperation of the first rectangular through hole 12 and the first push rod 11 with rectangular section ensures that the first push plate 14 will not rotate and move stably.

[0023] Similarly, personnel use small hammer to gently knock on the second stress plate 16 on the top mounting plate 22, such as Figure 2 and Figure 3 The arrow direction, the second stress plate 16 makes the second push plate 18 impact the top edge of the bakelite 19 through the second push rod 17, the length of the second push plate 18 is greater than the length of the plurality of bakelite 19 arranged, and will not interfere with the electromagnetic group 9, in this way, the second push plate 18 cooperates with the upper surface of the support mold 8 to align the bakelite 19 in the up and down directions, so as to make the connecting piece 20 flat and aligned. Here, the cooperation of the second rectangular through hole 12 and the second push rod 17 with rectangular section ensures that the second push plate 18 will not rotate and move stably.

[0024] The application buckles the movable mold 4 on both sides of the bakelite 19, hits the first stress plate 10 on the right side with a small hammer, so that the first push rod 11 pushes the first push plate 14 to align all the bakelite 19 left and right, and passes through the second stress plate 16 at the top, so that the second push rod 17 pushes the second push plate 18 to align all the bakelite 19 up and down, so that the connecting piece 20 is flat and aligned, convenient to use, easy to operate, improves the overall flatness efficiency, and will not hurt the connecting piece 20, ensures the product quality, in addition, the first push plate 14 and the second push plate 18 are designed in a whole to push multiple bakelite 19 at the same time, the alignment and flatness effect is improved.

[0025] Finally, the personnel use a screwdriver to tighten the long bolt 30, thereby fastening the aligned bakelite 19, opening the fixed plate 25 on the locking assembly, unfolding a pair of movable molds 4, removing the electromagnetic relay, completing the alignment work of the electromagnetic relay contact group.

[0026] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leveling tool for an electromagnetic relay, the electromagnetic relay comprising a contact group and an electromagnetic group (9), the contact group and the electromagnetic group (9) being arranged front and rear and connected, the contact group comprising a plurality of one-to-one corresponding contact pieces (20), tail pieces (6) and bakelite (19), the contact pieces (20) and tail pieces (6) being vertically arranged on the bakelite (19) and fixed by a pair of long bolts (30), characterized in that, The assembly includes a support mold (8), a pair of movable molds (4), a locking component, and a blocking component. The support mold (8) has two horizontal grooves (7) on its upper surface. When the bakelite (19) is placed on the support mold (8), the tail piece (6) is inserted into the horizontal grooves (7). Rotating shafts (5) are located near the upper edge of the left and right sidewalls of the support mold (8). A pair of movable molds (4) are located on both sides of the support mold (8) and are rotatably connected to it via rotating shafts (5). The locking component is located on the front sidewall of the pair of movable molds (4). When the pair of movable molds (4) rotate inward to a vertical position, they can be fixed by the locking component. When the pair of movable molds (4) are vertical, the distance between them is greater than the width of the bakelite (19). The blocking component is located on the left movable mold (4) and can block the left side of the bakelite (19). A first rectangular through hole (12) is located at the center of the right movable mold (4). A rectangular cross-section is movably arranged within the first rectangular through hole (12). The first push rod (11) is provided with a first push plate (14) on its inner side and a first force plate (10) on its outer side. The length of the first push plate (14) is greater than the length of the multiple bakelite pieces (19) arranged together. The first push plate (14) can hit the right side of the bakelite piece (19) when it moves to the left. The height of the movable mold (4) when it is vertical is greater than the height of the bakelite piece (19). The top of the movable mold (4) extends inward and is provided with an mounting plate (22). The mounting plate (22) The second rectangular through hole (15) extends to the top edge of the bakelite (19). The mounting plates (22) on both sides are vertically provided with a second rectangular through hole (15). A second push rod (17) with a rectangular cross section is movably arranged in the second rectangular through hole (15). A second push plate (18) is provided at the lower end of the second push rod (17) and a second force plate (16) is provided at the upper end. The length of the second push plate (18) is greater than the length of the multiple bakelite (19) arranged together. The second push plate (18) can hit the top edge of the bakelite (19) when it moves downward.

2. The leveling tool for an electromagnetic relay according to claim 1, characterized in that, The locking assembly includes a fixed plate (25), a rotating column (26), and a locking post (24). The fixed plate (25) is rotatably mounted on the front end face of the left movable mold (4) via the rotating column (26). The locking post (24) is fixedly mounted on the front end face of the right movable mold (4). The bottom of the fixed plate (25) has a locking groove (23). When the pair of movable molds (4) are vertical, rotating the fixed plate (25) can make the locking groove (23) lock onto the locking post (24).

3. A leveling tool for an electromagnetic relay according to claim 2, characterized in that, A rubber pad (27) is provided in the slot (23), and the locking post (24) is interference-fitted with the rubber pad (27).

4. A leveling tool for an electromagnetic relay according to claim 1, characterized in that, The blocking assembly includes a threaded post (3), a baffle (21), and a pair of limiting rods (28). A threaded hole (1) is provided at the center of the movable mold (4) on the left side. The threaded post (3) is screwed into the threaded hole (1). One inner end of the threaded post (3) is rotatably connected to the side wall of the baffle (21). A rotating handle (2) is fixedly provided at one outer end of the threaded post (3). A pair of limiting rods (28) are fixedly provided on both sides of the side wall of the baffle (21). The limiting rods (28) movably pass through the movable mold (4) on the left side.

5. A leveling tool for an electromagnetic relay according to claim 4, characterized in that, The baffle (21) and the first push plate (14) are provided with grooves (13) at the positions corresponding to the movable mold (4), and the baffle (21) and the first push plate (14) can retract into the grooves (13).

6. A leveling tool for an electromagnetic relay according to claim 1, characterized in that, When the movable mold (4) is rotated to the vertical position, the side wall of the movable mold (4) abuts against the edge of the upper surface of the supporting mold (8).

7. A leveling tool for an electromagnetic relay according to claim 1, characterized in that, The upper surface of the support mold (8) has a rear side of the alignment groove (29), and when the bakelite (19) is placed on the upper surface of the support mold (8), the electromagnetic assembly (9) is placed in the alignment groove (29).

8. The method of using a leveling tool for an electromagnetic relay according to claim 1, characterized in that, The steps are as follows:

1. Personnel loosen the long bolts (30) on the bakelite (19) to ensure that the bakelite can be adjusted (19). The electromagnetic relay is placed on the support mold (8), and the tail piece (6) is inserted into the horizontal groove (7) of the support mold (8). The bakelite (19) sits on the upper surface of the support mold (8).

2. Based on the model of the electromagnetic relay to be tested or by measurement, the personnel determine the width of the bakelite (19) and adjust the blocking component on the left movable mold (4) so ​​that it can abut against the left side of the bakelite (19).

3. The personnel rotate the left movable mold (4) clockwise and the right movable mold (4) counterclockwise until it is vertical, and lock the two by the locking component; 4. The personnel gently tap the first force plate (10) on the right movable mold (4) with a small hammer. The first force plate (10) causes the first push plate (14) to impact the bakelite (19) through the first push rod (11). The blocking component is used to flatten and align the bakelite (19) in the left and right directions, so that the splice (20) is flattened and aligned.

5. Personnel gently tap the second force plate (16) on the top mounting plate (22) with a small hammer. The second force plate (16) causes the second push plate (18) to impact the top edge of the bakelite (19) through the second push rod (17). In conjunction with the support mold (8), the bakelite (19) is leveled and aligned in the vertical direction, so that the splice (20) is leveled and aligned.

6. Personnel use screwdrivers to tighten the long bolts (30) to secure the flat bakelite (19); 7. Open the locking assembly, unfold a pair of movable molds (4), remove the electromagnetic relay, and complete the flat alignment of the electromagnetic relay contact group.

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