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CN-121990238-A - Bag taking device of packaging machine

CN121990238ACN 121990238 ACN121990238 ACN 121990238ACN-121990238-A

Abstract

The invention provides a bag taking device of a packaging machine, and relates to the technical field of automatic equipment. When the bag taking operation is performed, the air cylinder stretches out to push the fixing sleeve to move in the direction away from the fixing seat, and the fixing sleeve drives the two ends of the two clamping pieces to synchronously squeeze and move towards the middle. Make the middle part of two centre gripping pieces outwards crooked simultaneously, make the middle part of two centre gripping pieces open, put into the centre of two centre gripping pieces with the wrapping bag, make the cylinder shrink again, two centre gripping pieces are towards middle closed this moment, accomplish the clamping structure to the wrapping bag, make the cylinder stretch out again after accomplishing the centre gripping, two centre gripping pieces open simultaneously, the piston outwards moves in connecting channel's inside simultaneously, make connecting channel and adsorption port's inside form negative pressure, hold the opening of wrapping bag through the adsorption port, make the opening of wrapping bag open, be convenient for charge, realize the centre gripping get the bag and open wrapping bag open-ended function.

Inventors

  • WU JIANYING
  • DONG YALIN

Assignees

  • 南昌工学院

Dates

Publication Date
20260508
Application Date
20260330

Claims (9)

  1. 1. A bag pick-up device for a packaging machine, comprising: The clamping piece (1) is characterized in that the middle part of the clamping piece (1) can be bent outwards, two clamping pieces (1) are arranged, a plurality of adsorption holes (11) are formed in the inner sides of the two clamping pieces (1), connecting channels (12) are formed in the two clamping pieces (1), the connecting channels (12) are communicated with the adsorption holes (11), and two ends of the two clamping pieces (1) are fixedly connected with fixing sleeves (2); Still include two fixing base (4), fixing base (4) are close to two gag lever posts (41) of equal fixedly connected with of one end of fixed cover (2), the equal fixedly connected with of end of gag lever post (41) with piston (42) of connecting channel (12) sealing connection, fixing base (4) with fixedly connected with spring (5) between fixed cover (2), fixedly connected with cylinder (3) on fixing base (4), the output fixed connection of cylinder (3) is in on fixed cover (2).
  2. 2. The bag taking device of the packaging machine according to claim 1, wherein the fixing seat (4) is provided with a spring hole for internally installing a spring (5).
  3. 3. A bag taking device of a packaging machine according to claim 1, wherein the outer side of the middle part of the clamping piece (1) is provided with a bending groove.
  4. 4. A bag-taking device of a packaging machine according to claim 1, wherein said holding sheet (1).
  5. 5. A bag taking device of a packing machine according to claim 4, wherein the length of the limit lever (41) is longer than the moving stroke of the fixed sleeve (2).
  6. 6. A bag taking device of a packaging machine according to claim 1, wherein the adsorption holes (11) are uniformly distributed in an array on the inner side of the clamping sheet (1).
  7. 7. A bag taking device of a packing machine according to claim 1, wherein a sealing ring is sleeved on the periphery of the piston (42), and the sealing ring is in sealing fit with the inner wall of the connecting channel (12).
  8. 8. A bag taking device of a packing machine according to claim 1, wherein the spring (5) is sleeved outside the limit rod (41).
  9. 9. A bag taking device of a packaging machine according to claim 1, wherein the bending radius of the middle part of the clamping piece (1) is larger than the bending radius of the two ends of the clamping piece (1).

Description

Bag taking device of packaging machine Technical Field The invention relates to the technical field of automatic equipment, in particular to a bag taking device of a packaging machine. Background The bag taking device of the packing machine is a key component part in automatic packing equipment, and has the functions of taking out stacked or stored packing bags one by one, and opening the bag mouth to a state to be filled for subsequent material filling procedures. The existing bag taking device usually adopts a mode that a clamping mechanism and a sucker mechanism work cooperatively, a packaging bag is positioned through a clamping piece, and a bag opening is adsorbed and pulled open through an independently arranged sucker or a negative pressure component, so that the bag taking and opening functions are realized. However, the existing bag taking device still has the defects in practical application. The clamping mechanism and the adsorption mechanism are usually controlled by mutually independent driving elements respectively, so that the whole structure of the device is complex, the occupied space is large, and complex time sequence coordination is needed between all actions, thereby increasing the debugging difficulty and the failure rate of the control system. After the clamping sheets clamp the packaging bag, the adsorption mechanism needs to act independently to pull the bag opening, action delay exists in the process, the position matching precision requirement between the clamping sheets and the adsorption mechanism is high, and the situation that the bag opening is insufficient or the packaging bag falls off is easy to occur if the clamping sheets are improperly matched. In addition, the existing device is generally required to be provided with an additional unloading mechanism or to take down the packaging bag from the clamping mechanism by means of manpower after the loading is completed, so that the automatic release of the packaging bag after the loading is difficult to realize, the operation efficiency of the whole machine is affected, and therefore, the bag taking device of the packaging machine is urgently needed. Disclosure of Invention In order to solve at least one technical defect, the invention provides a bag taking device of a packaging machine, which comprises two clamping pieces, wherein the middle parts of the clamping pieces can be bent outwards, the two clamping pieces are provided with a plurality of adsorption holes, the inner sides of the two clamping pieces are respectively provided with a connecting channel, the connecting channels are communicated with the adsorption holes, the two ends of the two clamping pieces are fixedly connected with a fixing sleeve, the bag taking device also comprises two fixing seats, one ends of the fixing seats, which are close to the fixing sleeve, are fixedly connected with two limiting rods, the tail ends of the limiting rods are fixedly connected with pistons which are in sealing connection with the connecting channels, springs are fixedly connected between the fixing seats and the fixing sleeve, air cylinders are fixedly connected onto the fixing seats, and the output ends of the air cylinders are fixedly connected onto the fixing sleeves. Further, a spring hole for internally installing a spring is formed in the fixing seat. Further, a bending groove is arranged on the outer side of the middle part of the clamping piece. Further, the sheet is held. Further, the length of the limiting rod is greater than the moving stroke of the fixed sleeve. Further, the adsorption holes are uniformly distributed in an array on the inner side of the clamping piece. Further, the periphery of the piston is sleeved with a sealing ring, and the sealing ring is in sealing fit with the inner wall of the connecting channel. Further, the spring is sleeved outside the limiting rod. Further, the bending radius of the middle part of the clamping piece is larger than that of the two ends of the clamping piece. Advantageous effects When the bag taking operation is performed, the air cylinder stretches out to push the fixing sleeve to move in the direction away from the fixing seat, and the fixing sleeve drives the two ends of the two clamping pieces to synchronously squeeze and move towards the middle. Make the middle part of two centre gripping pieces outwards crooked simultaneously, make the middle part of two centre gripping pieces open, put into the centre of two centre gripping pieces with the wrapping bag, make the cylinder shrink again, two centre gripping pieces are towards middle closed this moment, accomplish the clamping structure to the wrapping bag, make the cylinder stretch out again after accomplishing the centre gripping, two centre gripping pieces open simultaneously, the piston outwards moves in connecting channel's inside simultaneously, make connecting channel and adsorption port's inside form negative pressure, hold the opening of wrapping bag thro