Search

CN-121990453-A - Centering positioning clamp and method for battery tray

CN121990453ACN 121990453 ACN121990453 ACN 121990453ACN-121990453-A

Abstract

The invention discloses a centering positioning clamp and a centering positioning method for a battery tray, and relates to the field of tool clamps. The invention also discloses a positioning method of the centering positioning clamp for the battery tray, which comprises the following steps of positioning the clamp in place, pre-clamping, centering adjustment and final clamping. According to the invention, the angle detection mechanism is formed by the movable clamping jaw, the in-place switch plate and the clamping plate, the relative position of the clamp and the battery tray is judged by judging the vertical state of the movable clamping jaw after the clamp is pre-clamped, the battery tray is subjected to smaller acting force in the pre-clamping process, the abrasion caused by the movement of the battery tray is avoided, and meanwhile, the positions of the movable clamping jaw, the clamping plate and other structures are adjusted after the positions of the clamp and the battery tray are judged, so that the clamp and the battery supporting plate are ensured to finish the center position calibration.

Inventors

  • QI LIMIN
  • HUANG KAIYONG
  • WANG JUNJUN

Assignees

  • 无锡市源隆金属制品有限公司

Dates

Publication Date
20260508
Application Date
20260409

Claims (10)

  1. 1. A centering fixture for a battery tray, comprising: a sliding connecting plate (11) is arranged below the clamp main beam (1); The clamping plates (2) are provided with two groups of clamping plates which are symmetrically arranged below the connecting plate (11), the two clamping plates (2) can slide, the top ends of the two clamping plates (2) are fixedly provided with positioning arms (21), one ends of the two positioning arms (21) which are close to each other are fixedly provided with positioning slide bars (211), a centering support (22) is arranged between the two positioning arms (21), the outer sides of the centering support (22) are fixedly provided with two positioning plates (221), the middle parts of the two positioning plates (221) are respectively provided with a positioning slide groove (222) which is matched with the positioning slide bars (211), one side middle part of the centering support (22) is fixedly provided with a centering cylinder (223), and the centering cylinder (223) is fixedly arranged on the lower surface of the connecting plate (11); clamping jaw support (3), it is equipped with a plurality of and equal fixed mounting in the bottom of splint (2), movable clamping jaw (31) are installed through the round pin axle rotatable to the bottom of clamping jaw support (3), the outside top end of movable clamping jaw (31) is fixed in place switch (34), the bottom fixed mounting of clamping jaw support (3) has clamp plate (315), the contact of movable clamping jaw (31) in place switch (34) receives clamp plate (315) extrusion when clamping jaw support (3) are perpendicular, clamp plate (315) and in place switch (34) constitution movable clamping jaw (31) angle detection mechanism are in order to judge two sets of clamping jaw support (3) centering states.
  2. 2. The centering fixture for a battery tray as claimed in claim 1, further comprising: the screw rod sliding sleeve (12) is fixedly arranged in the middle of the upper surface of the connecting plate (11); the centering screw rod (13) is rotatably arranged below the clamp main beam (1) through a bearing and penetrates through the screw rod sliding sleeve (12); The centering motor (14) is fixedly arranged on the outer side of the clamp main beam (1) and is fixedly connected with one end of the centering screw rod (13), and the centering motor (14), the centering screw rod (13) and the screw rod sliding sleeve (12) form a position adjusting mechanism of the connecting plate (11) so as to adjust the positions of the connecting plate (11) and the clamping plate (2).
  3. 3. The centering fixture for a battery tray as claimed in claim 1, further comprising: The positioning slide seat (32) can be arranged on the outer side of the clamping jaw support seat (3) in a vertical sliding mode, the bottom end of the positioning slide seat (32) is rotatably provided with the connecting arm (33) through a pin shaft, the bottom end of the connecting arm (33) is movably connected with the middle part of the outer side of the movable clamping jaw (31) through a pin shaft, a top spring (325) is arranged between the top end of the positioning slide seat (32) and the top end of the outer side wall of the clamping jaw support seat (3), and the pushing force mechanism formed by the top spring (325), the positioning slide seat (32) and the connecting arm (33) is used for providing acting force in the battery tray direction for the movable clamping jaw (31).
  4. 4.A centering fixture for a battery tray as claimed in claim 3, further comprising: A limiting hole (321) penetrating through the outer top end of the positioning slide seat (32); The limiting inserting rod (322) penetrates through the middle of the clamping jaw support (3) and is matched with the limiting hole (321), an armature (323) is fixedly arranged at one end of the limiting inserting rod (322), the armature (323) is located in the clamping jaw support (3), a spring is arranged between the armature (323) and the inner wall of the clamping jaw support (3), the spring is used for providing power for the armature (323) and the limiting inserting rod (322) to slide outwards so that the limiting inserting rod (322) is inserted into the limiting hole (321), the movable clamping jaw (31) is located at the lowest point relative to the positioning sliding seat (32) when the clamping jaw support (3) is vertical, and the limiting inserting rod (322) is inserted into the limiting hole (321) when the positioning sliding seat (32) is located at the lowest point so as to lock the positions of the positioning sliding seat (32) and the movable clamping jaw (31); The electromagnet (324) is fixedly arranged in the clamping jaw support (3), and the electromagnet (324) is used for absorbing the armature (323) and enabling the limiting inserting rod (322) to be separated from the limiting hole (321) so as to release the limit of the movable clamping jaw (31).
  5. 5. The centering fixture for a battery tray as claimed in claim 1, further comprising: The slot (311) penetrates through the middle part of the bottom end of the movable clamping jaw (31); a clamping insert (312) slidably mounted within the slot (311); The clamping cylinder (313) is fixedly arranged at the bottom end of the outer side of the movable clamping jaw (31) and the output end of the clamping cylinder is fixedly connected with one end of the clamping insert block (312), and the clamping cylinder (313) is used for providing thrust for the clamping insert block (312) so as to realize clamping and fixing of the battery tray.
  6. 6. The centering fixture for a battery tray as claimed in claim 1, further comprising: a spherical ball (316) mounted to the inside bottom end of the movable jaw (31), the spherical ball (316) being adapted to engage the battery tray to reduce contact friction between the movable jaw (31) and the battery tray; The limiting clamping groove (314) is formed in the top end of the inner side of the movable clamping jaw (31) and is matched with the pressing plate (315), and the limiting clamping groove (314) and the pressing plate (315) form a rotating angle limiting mechanism of the movable clamping jaw (31).
  7. 7. The centering fixture for a battery tray as claimed in claim 1, further comprising: the positioning air bags (4) are provided with two groups and are respectively arranged in the middle parts of the two clamping plates (2), and the two groups of the positioning air bags (4) are all arranged into a plurality of equal-interval distribution.
  8. 8. The centering fixture for a battery tray as claimed in claim 7, further comprising: The two airbag supports (41) are arranged and are respectively positioned at the outer sides of the two clamping plates (2), the two positioning airbags (4) are respectively and fixedly arranged at the inner sides of the two airbag supports (41), and airbag air cylinders (42) are respectively arranged between the two airbag supports (41) and the two clamping plates (2).
  9. 9. The centering fixture for a battery tray as claimed in claim 1, further comprising: and the lifting lugs (15) are provided with four lifting lugs and are respectively and fixedly arranged at four corners of the upper surface of the clamp main beam (1).
  10. 10. A positioning method of a centering fixture for a battery tray, applied to the centering fixture for a battery tray according to any one of claims 1 to 9, characterized by comprising the steps of: Step one, the clamp is in place, the whole clamp is moved to the upper part of the battery tray through hoisting equipment, and the whole clamp is driven to descend until movable clamping jaws (31) at the bottom ends of two clamping plates (2) respectively reach two sides of the battery tray; Step two, pre-clamping, namely driving two clamping plates (2) to move towards a battery tray through a centering cylinder (223), wherein the clamping plates (2) drive a movable clamping jaw (31) to move and contact with the side surface of the battery tray, and in the contact process, the movable clamping jaw (31) is overturned under the action of a top spring (325), a positioning sliding seat (32) and a connecting arm (33) and is kept in flexible fit with the battery tray; Step three, centering adjustment, after the clamping plate (2) moves in place, judging whether the movable clamping jaw (31) is in a vertical state or not through whether the in-place switch (34) is triggered, judging whether the whole clamp and the battery tray are centered according to the states of the two groups of movable clamping jaws (31), and adjusting the positions of the connecting plate (11), the clamping plate (2) and the movable clamping jaw (31) according to the centering condition until the whole clamp coincides with the center of the battery tray; And step four, finally clamping, driving a clamping cylinder (313) to push a clamping insert block (312) out, and tightly pressing the side beam at the outer side of the battery tray by the clamping insert block (312) to finish the final clamping and fixing of the battery tray.

Description

Centering positioning clamp and method for battery tray Technical Field The invention relates to the field of tool clamps, in particular to a centering positioning clamp and method for a battery tray. Background The battery tray is used as a bearing structure of the power battery of the new energy automobile, and the machining precision of the battery tray directly influences the assembly quality and the driving safety of the battery module. At present, the existing battery tray centering positioning fixture usually adopts a bidirectional synchronous clamping mechanism, a left clamping plate and a right clamping plate are driven to fold towards the center through an air cylinder or a motor, a tray is forced to be pushed to a preset theoretical center position by utilizing clamping jaws fixed on the clamping plates, however, in the practical application, the traditional centering mode is difficult to accurately control due to the fact that dimensional tolerance exists in the incoming materials of the battery tray and random deviation exists in the feeding position, the clamping jaws must be forced to push the tray to generate displacement in the folding process, severe sliding friction is caused between the surface of the tray and the clamping jaws, scratches, indentations and even microcracks are easily generated on the surface of an aluminum alloy tray, and the centering clamping jaws simultaneously bear the dual functions of pushing the tray to center and finally clamping and fixing, so that the clamping force and the centering force are coupled. Therefore, it is necessary to provide a centering fixture and method for a battery tray to solve the above-mentioned problems. Disclosure of Invention The invention aims to provide a centering positioning clamp and a centering positioning method for a battery tray, which are used for solving the problems in the background technology. In order to achieve the above purpose, the invention provides a centering and positioning clamp for a battery tray, which comprises the following technical scheme: A sliding connecting plate is arranged below the clamp main beam; The clamping plates are provided with two groups of clamping plates which are symmetrically arranged below the connecting plate, the two clamping plates can slide, the top ends of the two clamping plates are fixedly provided with positioning arms, one ends of the two positioning arms, which are close to each other, are fixedly provided with positioning slide bars, a centering bracket is arranged between the two positioning arms, the outer sides of the centering bracket are fixedly provided with two positioning plates, the middle parts of the two positioning plates are respectively provided with a positioning slide groove matched with the positioning slide bars, one side middle part of the centering bracket is fixedly provided with a centering cylinder, and the centering cylinder is fixedly arranged on the lower surface of the connecting plate; The clamping jaw support is provided with a plurality of clamping jaw supports and is fixedly arranged at the bottom ends of clamping plates, movable clamping jaws are rotatably arranged at the bottom ends of the clamping jaw supports through pin shafts, in-place switches are fixedly arranged at the top ends of the outer sides of the movable clamping jaws, pressing plates are fixedly arranged at the bottom ends of the clamping jaw supports, contacts of the in-place switches are extruded by the pressing plates when the movable clamping jaws are perpendicular to the clamping jaw supports, and movable clamping jaw angle detection mechanisms are formed by the pressing plates and the in-place switches to judge the centering state of the two groups of clamping jaw supports. Preferably, the device also comprises a screw rod sliding sleeve which is fixedly arranged in the middle of the upper surface of the connecting plate; the centering screw rod is rotatably arranged below the clamp main beam through a bearing and penetrates through the screw rod sliding sleeve; The centering motor is fixedly arranged on the outer side of the clamp girder, an output shaft is fixedly connected with one end of the centering screw rod, and the centering motor, the centering screw rod and the screw rod sliding sleeve form a position adjusting mechanism of the connecting plate so as to adjust the positions of the connecting plate and the clamping plate. Preferably, the clamping jaw clamping device further comprises a positioning sliding seat which can be vertically and slidably arranged on the outer side of the clamping jaw support, a connecting arm is rotatably arranged at the bottom end of the positioning sliding seat through a pin shaft, the bottom end of the connecting arm is movably connected with the middle part of the outer side of the movable clamping jaw through the pin shaft, a top spring is arranged between the top end of the positioning sliding seat and the top end of the outer side w