Gradient insulation rubber coating equipment applied to high-voltage busbar of new energy automobile

Abstract

The invention relates to the technical field of busbar production, in particular to gradient insulation rubber coating equipment applied to a high-voltage busbar of a new energy automobile, which comprises a machine frame and a limiting frame arranged at one end of the top surface of the machine frame, a pretreatment mechanism is arranged in the limiting frame, and a gradient rubber coating mechanism is arranged at the center of the top surface of the machine frame. According to the invention, high efficiency, accuracy and reliability of insulation processing of the high-voltage busbar of the new energy automobile are realized through pretreatment of the busbar in the early stage, gradient winding of the insulating layer in the middle stage and compaction processing of the insulating layer and the busbar in the later stage.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of busbar production, in particular to gradient insulation rubber coating equipment applied to a high-voltage busbar of a new energy vehicle. BACKGROUND

[0002] With the rapid development of the global new energy vehicle industry, high voltage, lightweight and high safety have become the core development direction of the power battery system and high-voltage electrical architecture. The insulation performance of the high-voltage busbar of a new energy vehicle, which is an electrically conductive carrier connecting core components such as a battery pack, a motor controller and a DC / DC converter, directly affects the reliability of the high-voltage system of the vehicle and the safety of the passengers.

[0003] However, the traditional insulation scheme has obvious limitations when facing the insulation requirements of high voltage and complex working conditions. For example, a busbar insulation coating workbench with the publication number CN210516336U is used to place the busbar in the middle of the insulation film, press the middle of the busbar, then push the sliding plates located on both sides of the placement groove, and the sliding plates slide towards the placement groove while pushing the insulation film on both sides of the busbar to fold towards the middle of the busbar. The overlapping part of the insulation film is adhered using adhesive tape, and the insulation coating of the busbar is completed.

[0004] Although the above content can realize the insulation coating of the busbar, the uniform insulation film cannot dynamically adjust the thickness of the insulation layer according to the electric field distribution, which may cause problems such as material redundancy in the low electric field area or insufficient insulation in the high electric field area.

[0005] In addition, through manual alignment, lamination and pasting steps for a single busbar, the coating time is relatively long, which may cause uneven lamination of the insulation layer, thereby affecting the lamination effect of the insulation layer. Therefore, a solution is proposed. SUMMARY

[0006] The purpose of the application is to realize the efficiency, accuracy and reliability of the insulation processing of the high-voltage busbar of a new energy vehicle through the pretreatment of the busbar, the gradient winding of the insulation layer and the compaction treatment of the insulation layer and the busbar.

[0007] The purpose of the application can be achieved by the following technical scheme: the gradient insulation rubber coating equipment applied to the high-voltage busbar of a new energy vehicle comprises a machine frame and a limiting frame arranged at one end of the top surface of the machine frame. A pretreatment mechanism is arranged in the limiting frame, and a gradient rubber coating mechanism is arranged at the center of the top surface of the machine frame.

[0008] Two groups of the clamping frame are respectively slidably installed in the inside of the limiting frame at one side of the frame opening, and the rear ends of the two groups of the clamping frame are in contact with the inner wall of the rear end of the limiting frame.

[0009] The inner wall of the front end of the limiting frame is provided with a double-shaft motor one between the upper and lower groups of sliding frames, and the double-shaft motor one is slidably connected with the sliding groove provided at the rear end inner wall of the limiting frame through the fixed mounting of the motor base.

[0010] Further, the upper and lower end faces of the compression roller are 2cm longer than the upper and lower end faces of the pre-pressing frame, and the inner sides of the two groups of sliding frames are provided with clamping grooves at the sides of the helical rotating rods.

[0011] Further, the front end faces of the two groups of sliding frames are provided with gear slot groups at the ends away from the clamping grooves, and the front ends of the upper and lower groups of gear slot groups are jointly meshed with a long-toothed roller.

[0012] Further, the stepped rubber coating mechanism comprises a vertical frame one fixedly installed at the center of the surface of the machine frame and a vertical frame two movably installed on the surface of the machine frame.

[0013] The sliding block and the inner wall of the sliding groove are jointly provided with a cylinder, and the sliding block and the push rod at the output shaft of the cylinder are fixedly connected.

[0014] Further, the outer sides of the two groups of double-shaft tooth ring frames are provided with limiting tooth rings at the four corners, and the limiting tooth rings are meshed with the outer ring of the double-shaft tooth ring frame.

[0015] The shaft rod of one of the limiting tooth rings on the outer sides of the vertical frame one and the vertical frame two extends to the other side of the frame body and is fixedly installed with an auxiliary rotating gear, and the vertical frame one is provided with a single-shaft motor two at the bottom of the limiting tooth ring away from the double-shaft tooth ring frame.

[0016] Further, the output end of the single-shaft motor two is fixedly installed with a main rotating gear roller, the main rotating gear roller is engaged with an auxiliary rotating gear at the vertical frame one, and the length of the main rotating gear roller is four times the length of the auxiliary rotating gear.

[0017] Further, the outer parts of the vertical frame one and the vertical frame two are jointly sleeved with a concave-shaped movable frame, an opening slot is arranged on the side, away from the opening, of the movable frame, and long slots are arranged on the side frame body of the movable frame and at the upper and lower ends of the opening slot;

[0018] Sliding shafts are respectively and slidably connected to the inner centers of the two groups of long slots, one end of each sliding shaft is fixedly connected to the side wall of the vertical frame, and damping spring shock absorbers are jointly arranged between the two sides of each sliding shaft and the inner side walls of the corresponding long slots; and a double-shaft motor two is arranged at the top rear end of the vertical frame two, close to the side of the vertical frame one.

[0019] Further, eccentric rotating wheels are fixedly installed at the output shafts at the two ends of the double-shaft motor two, concave-shaped resisting frames one and two are fixedly installed at the front and rear inner walls of the movable frame, the front and rear two groups of resisting frames one and the front and rear two groups of resisting frames two are mirror-symmetric with respect to the central axis of the movable frame, and the thickness of the frame opening of the resisting frame two is 2 cm greater than that of the resisting frame one.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] 1. The present application is provided with a pretreatment mechanism to pretreat the surface of the busbar, a double-shaft motor one drives the clamping frame to move to quickly clamp and position the busbar, and the single-shaft motor one, the long gear roller and the gear slot group are linked to drive the sliding frame to reciprocate, so that the compression roller of the pre-pressing frame can roll and flatten the upper and lower surfaces of the busbar, effectively eliminating the defects such as wrinkles and unevenness on the surface of the busbar, and laying a foundation for the uniform winding of the subsequent insulation material.

[0022] 2. The present application is also provided with a stepped rubber coating mechanism, single-layer winding: only the vertical frame one is enabled, the main rotating gear roller drives the material roller to rotate through the auxiliary rotating gear, and the insulation tape is uniformly attached to the surface of the busbar to form a basic insulation layer; double-layer winding: the vertical frame two is pushed close to the vertical frame one by the air cylinder, and the two groups of material rollers are synchronously wound around different positions of the busbar to form a gradient insulation structure of "inner layer + outer layer", effectively matching the electric field distribution of different areas of the high-voltage busbar and improving the insulation reliability.

[0023] 3、The present application is through the internal setting of the compaction assembly of the stepped encapsulation mechanism, through the eccentric rotating wheel driven by the double-shaft motor two to drive the reciprocating movement of the movable frame, and the periodic extrusion of the resistance frame one and the resistance frame two: wherein, the resistance frame one carries out preliminary compaction on the single-layer insulation belt, eliminates the bubbles or gaps in the winding process, and enhances the adhesion of the insulation belt and the busbar; the resistance frame two carries out secondary reinforced compaction on the insulation belt of the double-layer superposition area, ensures the three-way combination of the outer insulation belt and the inner layer and the busbar, avoids the loosening and falling of the insulation layer, and significantly improves the mechanical strength and durability of the insulation layer. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to facilitate the understanding of those skilled in the art, the present application will be further described below in conjunction with the drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0026] Figure 2 It is a three-dimensional schematic diagram of the combination of the local structure of the limiting frame and the pretreatment mechanism of the present application;

[0027] Figure 3 It is a three-dimensional schematic diagram of the pretreatment mechanism of the present application;

[0028] Figure 4 It is a side view of the limiting frame of the present application;

[0029] Figure 5 It is a schematic diagram of the combination of the local structure of the machine frame and the stepped encapsulation mechanism of the present application;

[0030] Figure 6 It is a three-dimensional schematic diagram of the stepped encapsulation mechanism of the present application;

[0031] Figure 7 It is a three-dimensional schematic diagram of the movable frame of the present application.

[0032] In the figure: 1, machine frame; 2, limiting frame; 3, pretreatment mechanism; 31, clamping frame; 32, pre-pressing frame; 33, sliding frame; 34, double-shaft motor one; 35, spiral rotating rod; 36, compression roller; 37, round shaft; 38, long-toothed roller; 39, single-shaft motor one; 4, stepped encapsulation mechanism; 41, vertical frame one; 42, vertical frame two; 43, sliding block; 44, air cylinder; 45, double-shaft toothed ring frame; 46, limiting toothed ring; 47, coiled material roller; 48, auxiliary rotating gear; 49, single-shaft motor two; 410, main rotating toothed roller; 411, movable frame; 412, sliding shaft; 413, damping spring shock absorbing ring; 414, double-shaft motor two; 415, eccentric rotating wheel; 416, resistance frame one; 417, resistance frame two. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0034] Embodiment one: please refer to Figure 1 - Figure 4 As shown in the drawings, the gradient insulation rubber coating equipment applied to the high-voltage busbar of a new energy vehicle comprises a machine frame 1 and a limiting frame 2 arranged at one end of the top surface of the machine frame 1, a pretreatment mechanism 3 is arranged inside the limiting frame 2, and a stepped rubber coating mechanism 4 is arranged at the center of the top surface of the machine frame 1.

[0035] The pretreatment mechanism 3 comprises two groups of clamping frames 31 and two groups of pre-pressing frames 32. The two groups of clamping frames 31 are respectively slidably installed at the frame openings on one side inside the limiting frame 2, and the rear ends of the two groups of clamping frames 31 are in contact with the inner wall of the rear end of the limiting frame 2. The two groups of pre-pressing frames 32 are respectively movably installed at the frame openings on the other side inside the limiting frame 2, and the rear ends of the two groups of pre-pressing frames 32 are respectively slidably connected inside the vertical grooves arranged at the inner wall of the rear end of the limiting frame 2. The two groups of clamping frames 31 are respectively fixedly installed with slide frames 33 in front of and behind the two groups of clamping frames 31.

[0036] A double-shaft motor 34 is arranged at the inner wall of the front end of the limiting frame 2 and between the two groups of slide frames 33. The double-shaft motor 34 is slidably connected with the slide groove arranged at the inner wall of the rear end of the limiting frame 2 through the fixedly installed motor base. The double-shaft motor 34 is fixedly installed with two groups of reverse-threaded spiral rotating rods 35 at the upper and lower output ends of the double-shaft motor 34. The two groups of spiral rotating rods 35 are respectively screwed through the two groups of slide frames 33.

[0037] Before the high-voltage busbar is wound with insulation material, the busbar is first introduced into the limiting frame 2, and then the busbar is sequentially clamped, pushed, and rolled flat by the pretreatment mechanism 3. The specific operation steps are as follows: one end of the busbar is inserted between the two groups of clamping frames 31, and the other end is inserted between the two groups of pre-pressing frames 32.

[0038] Subsequently, the double-shaft motor 34 is started to drive the two groups of spiral rotating rods 35 to rotate synchronously. Since the spiral rotating rods 35 are screw-connected with the slide frames 33, and the rear ends of the slide frames 33 are slidably connected with the inner wall of the limiting frame 2, the two groups of slide frames 33 are drawn close to each other under the traction, and the clamping frames 31 fixedly connected with the slide frames 33 are also moved until the two groups of clamping frames 31 completely clamp the busbar, thereby realizing the preliminary limitation of the busbar.

[0039] Two groups of pre-pressing frames 32 are rotatably arranged away from the inner side of the clamping frame 31, and the upper and lower ends of the pressing rollers 36 are 2 cm longer than the upper and lower ends of the pre-pressing frames 32. Two groups of clamping grooves are arranged inside the sliding frames 33 and on one side of the screw rotating rod 35, and the two groups of clamping grooves are respectively sleeved with the circular shafts 37 arranged at the center of the front end face of the two groups of pre-pressing frames 32. The front end face of the two groups of sliding frames 33 is provided with a gear slot group, and the front ends of the two groups of gear slot groups are jointly meshed with the long toothed roller 38. The single-shaft motor 39 is arranged between the top end of the long toothed roller 38 and the inner wall of the top of the limiting frame 2.

[0040] At the same time, the two groups of sliding frames 33 gradually approach each other, and through the traction of the circular shafts 37, the two groups of pre-pressing frames 32 also approach each other, until the two groups of pressing rollers 36 are in close contact with the upper and lower end faces of the busbar, and then the single-shaft motor 39 is started to drive the long toothed roller 38 to rotate clockwise and accurately mesh with the two groups of gear slot groups at the front end of the sliding frame 33, realizing the reciprocating movement of the two groups of sliding frames 33. Since the clamping frame 31 is fixedly connected with the sliding frame 33, the two groups of clamping frames 31 can jointly clamp the busbar and move along a straight line.

[0041] At the same time, since the sliding frame 33 is in a sleeved relationship with the circular shaft 37, the sliding frame 33 and the pre-pressing frame 32 move relatively, so that the busbar body passes through the two groups of pressing rollers 36 in turn, thereby flattening the busbar by rolling, completing the pretreatment operation of the busbar, and facilitating the smooth pushing of the flattened busbar into the stepped rubber coating mechanism 4.

[0042] Example two: please refer to Figure 5 - Figure 6 As shown in the figure, the stepped rubber coating mechanism 4 includes a vertical frame one 41 fixedly installed at the center of the surface of the machine frame 1 and a vertical frame two 42 movably installed on the surface of the machine frame 1. The bottom center of the vertical frame two 42 is slidably connected inside the sliding groove provided on the surface of the machine frame 1 through the fixedly installed sliding block 43, and the sliding block 43 and the inner wall of one side of the sliding groove are jointly provided with the air cylinder 44. The sliding block 43 is fixedly connected with the push rod at the output shaft of the air cylinder 44. The vertical frame one 41 and the vertical frame two 42 are both provided with a circular groove, and the side away from each other of the two is movably installed with a double-shaft tooth ring frame 45 outside.

[0043] The double-shaft tooth ring frame 45 is rotatably provided with a limiting tooth ring 46 at four corner positions outside, and the limiting tooth ring 46 is meshed with the outer ring of the double-shaft tooth ring frame 45. The double-shaft tooth ring frame 45 away from each other on one side and fixedly installed with a coiled material roller 47 at the rear center. The shaft rod of one of the limiting tooth rings 46 outside the vertical frame one 41 and the vertical frame two 42 is extended to the other side of the frame body and fixedly installed with an auxiliary rotating gear 48, and the vertical frame one 41 away from the double-shaft tooth ring frame 45 side and located at the bottom of the limiting tooth ring 46 is provided with a single-shaft motor two 49.

[0044] The output end of the single-shaft motor two 49 is fixedly provided with a main rotating gear roller 410, the main rotating gear roller 410 is engaged with the auxiliary rotating gear 48 at the vertical frame one 41, and the length of the main rotating gear roller 410 is four times the length of the auxiliary rotating gear 48.

[0045] After the busbar is pretreated, the busbar sequentially passes through the interiors of the vertical frame one 41 and the vertical frame two 42. When only one layer of the insulation tape needs to be wound, one end of the busbar passes through the circular groove of the vertical frame one 41, and the insulation tape outside the coiled material roller 47 at the vertical frame one 41 is introduced to the surface of the busbar, and then the single-shaft motor two 49 is started to drive the main rotating gear roller 410 to rotate, because the main rotating gear roller 410 is engaged with the auxiliary rotating gear 48 at the vertical frame one 41, the auxiliary rotating gear 48, a plurality of sets of the limiting tooth ring 46 outside the vertical frame one 41 and the double-shaft tooth ring frame 45 are simultaneously rotated, and the coiled material roller 47 is driven to rotate, so that the insulation tape is slowly unwound and adhered to the surface of the busbar, forming a continuous primary insulation layer. The busbar after the primary winding sequentially passes through the interior of the vertical frame two 42, at this time, the coiled material roller 47 outside the vertical frame two 42 remains stationary.

[0046] When the busbar needs to be wound with double layers of the insulation tape, the cylinder 44 is started to drive the sliding block 43 to move along the sliding groove by the push rod, so that the vertical frame two 42 moves close to the vertical frame one 41, until the auxiliary rotating gear 48 at the vertical frame two 42 moves to the surface of the main rotating gear roller 410, and the rotation of the main rotating gear roller 410 simultaneously realizes the rotation of the two auxiliary rotating gears 48.

[0047] Similarly, the coiled material roller 47 at the vertical frame two 42 performs external insulation winding on the busbar, because the busbar sequentially passes through the interiors of the vertical frame one 41 and the vertical frame two 42, the winding of the vertical frame two 42 segment is secondary winding based on the vertical frame one 41 segment, forming a gradient insulation structure of “inner layer + outer layer”(the thickness and performance of the outer layer can be adjusted according to the electric field requirement), effectively matching the electric field distribution of different regions of the high-voltage busbar(such as increasing the thickness of the insulation layer in the terminal connection area where the electric field is concentrated), and further improving the insulation effect.

[0048] Example three: please refer to Figure 6 - Figure 7 As shown in the drawings, the vertical frame one 41 and the vertical frame two 42 are jointly sleeved with a movable frame 411 of a concave structure, an open groove is arranged on the side of the movable frame 411 away from the opening, long grooves are arranged on one side of the movable frame 411 and located at the upper and lower ends of the open groove, sliding shafts 412 are slidably connected to the interiors of the two long grooves, one end of each sliding shaft 412 is fixedly connected to the side wall of the vertical frame one 41, and damping spring shock absorbers 413 are jointly arranged between the sliding shafts 412 and the inner side walls of the corresponding long grooves, and a double-shaft motor two 414 is arranged at the top rear end of the vertical frame two 42 close to the vertical frame one 41.

[0049] Both ends of the double-shaft motor two 414 are fixedly installed with eccentric rotating wheels 415, and the front and rear inner walls of the movable frame 411 are fixedly installed with recessed structure resisting frames one 416 and resisting frames two 417 at both sides, the front and rear two groups of resisting frames one 416 and the front and rear two groups of resisting frames two 417 are mirror-symmetric to the central axis of the movable frame 411, and the frame opening thickness of the resisting frames two 417 is twice the frame opening thickness of the resisting frames one 416;

[0050] The bus bar after preliminary winding of the insulating tape penetrates at the interval between the vertical frame one 41 and the vertical frame two 42, and sequentially penetrates between the front and rear two groups of resisting frames one 416, at this time, the double-shaft motor two 414 is started to drive the eccentric rotating wheels 415 at both ends to rotate synchronously, the outer edge of the eccentric rotating wheel 415 periodically collides with the rear end inner wall of the movable frame 411, thereby forcing the movable frame 411 to produce periodic reciprocating motion, and the resisting frames one 416 and the resisting frames two 417 move synchronously with the movable frame 411;

[0051] Firstly, the bus bar after preliminary winding of the insulating tape penetrates between the front and rear two groups of resisting frames one 416, and the front and rear two groups of resisting frames one 416 reciprocate, the frame opening slot of the resisting frames one 416 is used for compacting operation of the insulating tape on the bus bar, the adhesion between the insulating tape and the bus bar is enhanced, and the loosening or falling off of the insulating tape is avoided;

[0052] Similarly, the front and rear movements of the two groups of resisting frames two 417 can compact the insulating tape twice when the bus bar passes, since the frame opening thickness of the resisting frames two 417 is greater than that of the resisting frames one 416, the resisting frames two 417 can roll and press the double-layer insulating tape on the bus bar, and the firmness of the double-layer insulating tape on the bus bar is ensured;

[0053] In addition, the damping spring damping ring 413 can effectively slow down the sliding speed of the sliding shaft 412 in the long groove, force the movement of the movable frame 411 to be more stable, avoid causing excessive impact force to the bus bar, and ensure the uniformity and quality of the compaction of the insulating tape.

[0054] Working principle:

[0055] Firstly, the high-voltage bus bar is introduced into the limiting frame 2, the quick clamping and positioning of the bus bar is realized by the clamping frame 31 driven by the double-shaft motor one 34, the sliding frame 33 is driven to reciprocate by the linkage of the single-shaft motor one 39, the long-toothed roller 38 and the tooth groove group, and the pressure roller 36 of the pre-pressing frame 32 is forced to roll and press the upper and lower surfaces of the bus bar, which effectively eliminates the defects such as wrinkles, unevenness and the like on the surface of the bus bar, lays a foundation for uniform winding of the subsequent insulating material, and facilitates subsequent insulating rubber coating operation;

[0056] Subsequently, the busbar enters the step gluing mechanism 4, and the single-layer or double-layer insulation tape winding mode is selected according to the actual requirement. When the single-layer winding is selected, the coiled material roller 47 at the vertical frame one 41 releases the insulation tape and adheres to the surface of the busbar to form a preliminary insulation layer. If double-layer winding is required, the air cylinder 44 is started to push the vertical frame two 42 to approach the vertical frame one 41, so that the two groups of coiled material rollers 47 simultaneously perform the inner and outer layer insulation winding on the busbar to form a gradient insulation structure.

[0057] Finally, the busbar after the preliminary winding of the insulation tape penetrates at the interval between the vertical frame one 41 and the vertical frame two 42, and the movable frame 411 and the inner resisting frame one 416 and the resisting frame two 417 thereof are used to compact the insulation tape to enhance the adhesion and firmness between the insulation tape and the busbar, and to ensure the insulation effect.

[0058] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and do not limit the present application to the specific embodiments. Obviously, according to the content of the present application, many modifications and changes can be made. The present application is selected and described in detail in order to better explain the principles and practical application of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and the entire scope and equivalents thereof.

Claims

1. Gradient insulation lagging equipment used for high-voltage busbars of new energy vehicles, characterized by: It comprises a machine frame (1) and a limit frame (2) arranged at one end of the top surface of the machine frame (1); a pre-processing mechanism (3) is arranged inside the limit frame (2); and a step-type rubber encapsulating mechanism (4) is arranged at the center of the top surface of the machine frame (1); The pre-processing mechanism (3) comprises two groups of clamping frames (31) and two groups of pre-pressing frames (32). The two groups of clamping frames (31) are respectively slidably installed inside the limit frame (2) at one side frame opening, and their rear ends are in contact with the rear end inner wall of the limit frame (2). The two groups of pre-pressing frames (32) are respectively movably installed at the other side frame opening inside the limit frame (2), and their rear ends are respectively slidably connected to the vertical grooves provided at the rear end inner wall of the limit frame (2). The two groups of clamping frames (31) are respectively fixedly installed with sliding frames (33) at the front and rear. A dual-axis motor (34) is provided on the inner wall of the front end of the limit frame (2) and between the upper and lower groups of sliding frames (33). The outer portion of the dual-axis motor (34) is slidably matched with a slide groove provided on the inner wall of the rear end of the limit frame (2) through a fixedly installed machine base. A spiral rotating rod (35) with a reverse thread is fixedly installed at the upper and lower output ends of the dual-axis motor (34). The two groups of spiral rotating rods (35) are spirally penetrated into the upper and lower groups of sliding frames (33) respectively. A pressure roller (36) is embedded and rotatably provided on the side of the two groups of pre-pressing frames (32) away from the clamping frame (31).

2. The gradient insulation rubber coating equipment for high-voltage busbars of new energy vehicles according to claim 1 is characterized in that: The upper and lower end surfaces of the pressing roller (36) respectively extend 1 to 2 cm beyond the upper and lower end surfaces of the pre-pressing frame (32). A card slot is provided inside the two groups of sliding frames (33) and located on one side of the spiral rotating rod (35). The two groups of card slots are respectively sleeved with a circular shaft (37) provided at the center of the front end surface of the two groups of pre-pressing frames (32).

3. The gradient insulation rubber coating equipment for high-voltage busbars of new energy vehicles according to claim 2 is characterized in that: A tooth groove group is provided at the front end surface of the two groups of sliding frames (33) and at one end away from the card slot. The front ends of the upper and lower groups of tooth groove groups are engaged with a long tooth roller (38). A single-axis motor (39) is provided between the top end of the long tooth roller (38) and the top inner wall of the limit frame (2).

4. The gradient insulation rubber coating equipment for high-voltage busbars of new energy vehicles according to claim 1 is characterized in that: The step rubber coating mechanism (4) comprises a first vertical frame (41) fixedly mounted at the center of the surface of the machine frame (1) and a second vertical frame (42) movably mounted on the surface of the machine frame (1), wherein the center of the bottom of the second vertical frame (42) is slidably connected to the inside of a slide groove provided on the surface of the machine frame (1) via a fixedly mounted slider (43); A cylinder (44) is provided between the slider (43) and the inner wall of one side of the slide groove. The slider (43) is fixedly connected to the push rod at the output shaft of the cylinder (44). A circular groove is provided at the center of the vertical frame 1 (41) and the vertical frame 2 (42), and a double-axis gear ring frame (45) is movably installed on the side away from each other and located on the outside.

5. The gradient insulation rubber coating equipment for high-voltage busbars of new energy vehicles according to claim 4 is characterized in that: The outer portion of the double-axis gear ring frame (45) is provided with limited gear rings (46) which are respectively rotatably arranged at four groups of corners, and the limited gear rings (46) are engaged with the outer ring of the double-axis gear ring frame (45), and a coiling roller (47) is fixedly installed at the center of the rear end on the side away from each other of the two groups of double-axis gear ring frames (45); The shaft of one set of limiting toothed rings (46) outside the vertical frame 1 (41) and the vertical frame 2 (42) extends to the other side of the frame body and is fixedly installed with an auxiliary gear (48), and the vertical frame 1 (41) is away from the side of the double-axis toothed ring frame (45) and is provided with a single-axis motor 2 (49) at the bottom of the limiting toothed ring (46).

6. The gradient insulation rubber coating equipment for high-voltage busbars of new energy vehicles according to claim 5 is characterized in that: A main gear roller (410) is fixedly mounted at the output end of the second single-axis motor (49), and the main gear roller (410) is engaged with the auxiliary gear (48) at the first vertical frame (41), and the length of the main gear roller (410) is four times the length of the auxiliary gear (48).

7. The gradient insulation rubber coating equipment for high-voltage busbars of new energy vehicles according to claim 1 is characterized in that: The outer parts of the vertical frame 1 (41) and the vertical frame 2 (42) are sleeved with a movable frame (411) of a concave structure. An opening groove is provided on the side of the movable frame (411) away from the opening, and long grooves are provided on the frame body of one side of the movable frame (411) and at the upper and lower ends of the opening groove. A sliding shaft (412) is slidably connected to the inner center of the two groups of long grooves, and one end of the sliding shaft (412) is fixedly connected to the side wall of the vertical frame (41). Damping spring shock-absorbing rings (413) are commonly provided between the two sides of the sliding shaft (412) and the corresponding inner side walls of the long grooves. A dual-axis motor (414) is provided at the top rear end of the vertical frame (42) near the side of the vertical frame (41).

8. The gradient insulation rubber coating equipment for high-voltage busbars of new energy vehicles according to claim 7 is characterized in that: An eccentric wheel (415) is fixedly installed at the output shafts at both ends of the dual-axis motor 2 (414), and a concave structured abutment frame 1 (416) and abutment frame 2 (417) are fixedly installed at both sides of the front and rear inner walls of the movable frame (411). The two corresponding front and rear groups of abutment frame 1 (416) and the two front and rear groups of abutment frame 2 (417) are mirror-symmetrical with respect to the central axis of the movable frame (411), and the frame opening thickness of abutment frame 2 (417) is twice the frame opening thickness of abutment frame 1 (416).

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