Search

CN-224210522-U - Quick die changing mechanism for blow molding machine

CN224210522UCN 224210522 UCN224210522 UCN 224210522UCN-224210522-U

Abstract

The utility model discloses a quick die changing mechanism for a blow molding machine, which comprises a fixed seat, a primary movable arm and a secondary movable arm, wherein the fixed seat is used for being arranged at a frame of the blow molding machine, two ends of the primary movable arm are respectively hinged with the fixed seat and the secondary movable arm, a die taking rod is arranged at the tail end of the secondary movable arm, a connector is arranged at the lower end of the die taking rod, a T-shaped nest notch is transversely formed at the connector, the nest notch is communicated with a hanging hole below the connector, and a circular arc-shaped step part is arranged at the edge of the hanging hole. The utility model has novel structure, the fixing screw above the mould can directly enter the socket notch of the connector at the lower end of the mould taking rod, and the mould is moved by the cooperation of the primary movable arm and the secondary movable arm, so that the mould is convenient to replace, and the hinge rod and the mould taking rod are in coordinated balance with each other in size, so that the utility model can be suitable for a narrow space in a blow molding machine under the condition of achieving a basic bearing function.

Inventors

  • CHEN SIYUAN
  • YANG YUANHE
  • CHEN PEIJIN

Assignees

  • 汕头市伟力塑料机械厂有限公司

Dates

Publication Date
20260508
Application Date
20260408

Claims (7)

  1. 1. The quick die changing mechanism for the blow molding machine is characterized by comprising a fixing seat (10), a primary movable arm (20) and a secondary movable arm (30), wherein the fixing seat (10) is used for being installed at a frame (71) of the blow molding machine (70), two ends of the primary movable arm (20) are hinged with the fixing seat (10) and the secondary movable arm (30) respectively, a die taking rod (40) is installed at the tail end of the secondary movable arm (30), a connector (41) is arranged at the lower end of the die taking rod (40), a T-shaped nest notch (411) is transversely formed in the connector (41), the nest notch (411) is communicated with a hanging hole (412) below the connector (41), and an arc-shaped step portion (413) is formed in the edge of the hanging hole (412).
  2. 2. A quick mould changing mechanism for a blow moulding machine according to claim 1, wherein a first hinge rod (50) is arranged between the fixing seat (10) and the primary movable arm (20), a first limiting ring (53) is arranged in the middle of the first hinge rod (50), a first shaft rod portion (51) used for being hinged with the primary movable arm (20) is arranged at the upper end of the first limiting ring (53), and a second shaft rod portion (52) used for being hinged with the fixing seat (10) is arranged at the lower end of the first limiting ring (53).
  3. 3. A quick mould changing mechanism for a blow moulding machine according to claim 2, wherein a second hinge rod (60) is arranged between the primary movable arm (20) and the secondary movable arm (30), a second limiting ring (63) is arranged in the middle of the second hinge rod (60), a third shaft rod part (61) used for being hinged with the secondary movable arm (30) is arranged at the upper end of the second limiting ring (63), a fourth shaft rod part (62) used for being hinged with the primary movable arm (20) is arranged at the lower end of the second limiting ring (63), and the lengths of the first shaft rod part (51) of the first hinge rod (50) and the fourth shaft rod part (62) of the second hinge rod (60) are equal.
  4. 4. A quick change mold mechanism for a blow molding machine according to claim 3, wherein the stepped portion (413) has an inner diameter D1, the hanging hole (412) has an inner diameter D2, the ratio of D1 to D2 is K1, and K1 is in the range of 0.6 to 0.7.
  5. 5. A quick change mold mechanism for a blow molding machine according to claim 4, wherein the diameter of the third shaft portion (61) of the second hinge rod (60) is D3, the ratio of D2 to D3 is K2, K2 is in the range of 0.3-0.4, and K1+K2 is less than 1.
  6. 6. A quick change mold mechanism for a blow molding machine according to claim 5, wherein said secondary movable arm (30) has a thickness H1, D3/H1 being greater than 0.5.
  7. 7. A quick change mold mechanism for a blow molding machine according to claim 3, wherein a first limit cover plate (501) is connected to the first hinge rod (50), and a second limit cover plate (601) is connected to the second hinge rod (60).

Description

Quick die changing mechanism for blow molding machine Technical Field The utility model relates to the technical field related to blow molding machines, in particular to a quick die changing mechanism for a blow molding machine. Background In the production of blow molded articles, the mold is the core component that determines the shape and size of the product. When a production task is switched from one product to another, the mold must be replaced accordingly. At present, most blowing enterprises adopt a die changing mode which depends on gantry cranes in workshops to carry out suspension operation. Although the mode can realize the basic hoisting function, the mode has a plurality of limitations in practical application. First, gantry crane operation requires workshops to be provided with specific building structural supports, such as spandrel girders and dedicated rails, which are severely dependent on the initial set-up of the plant. For old workshops without pre-buried hoisting equipment or sites with limited space, the mode of die change cannot be effectively adopted. Secondly, in terms of efficiency, the conventional suspension die change is a typical serial operation flow, and an operator must wait for the previous group of dies to be completely detached and lifted to a storage area before the next group of dies can be lifted. This mode of operation results in significantly longer plant downtime, especially when the production schedule is frequently switched, and the accumulated mold change time may even be a significant fraction of the effective plant run time, directly reducing overall plant utilization. In addition, the suspension work itself requires high skill on the operators, and the risk of the mold swinging in the air also makes the entire mold changing process carefully slow. In the industry trend of pursuing flexible production and quick response, the mode changing mode which is limited by sites and has difficult improvement of efficiency needs to be further upgraded. Disclosure of utility model The utility model aims to overcome the defects of the prior art and provides a quick die changing mechanism for a blow molding machine. The quick die changing mechanism for the blow molding machine comprises a fixed seat, a primary movable arm and a secondary movable arm, wherein the fixed seat is used for being installed at a frame of the blow molding machine, two ends of the primary movable arm are hinged with the fixed seat and the secondary movable arm respectively, a die taking rod is installed at the tail end of the secondary movable arm, a connector is arranged at the lower end of the die taking rod, a T-shaped nest notch is transversely formed in the connector, the nest notch is communicated with a hanging hole below the connector, and a circular arc-shaped step part is arranged at the edge of the hanging hole. Further stated, a first hinging rod is arranged between the fixing seat and the primary movable arm, a first limiting ring is arranged in the middle of the first hinging rod, a first shaft rod part used for hinging the primary movable arm is arranged at the upper end of the first limiting ring, and a second shaft rod part used for hinging the fixing seat is arranged at the lower end of the first limiting ring. Further stated, a second hinging rod is arranged between the primary movable arm and the secondary movable arm, a second limiting ring is arranged in the middle of the second hinging rod, a third shaft rod part used for hinging with the secondary movable arm is arranged at the upper end of the second limiting ring, a fourth shaft rod part used for hinging with the primary movable arm is arranged at the lower end of the second limiting ring, and the lengths of the first shaft rod part of the first hinging rod and the fourth shaft rod part of the second hinging rod are equal. Further, the inner diameter of the step portion is D1, the inner diameter of the hanging hole is D2, the ratio of D1 to D2 is K1, and the range of K1 is 0.6-0.7. Further stated, the diameter of the third shaft portion of the second hinge lever is D3, the ratio of D2 to D3 is K2, K2 ranges from 0.3 to 0.4, and k1+k2 is less than 1. Further stated, the secondary movable arm has a thickness H1, D3/H1 of greater than 0.5. Further stated, the first hinge rod is connected with a first limiting cover plate, and the second hinge rod is connected with a second limiting cover plate. The utility model has the advantages that the structure is novel, the fixing screw above the die can directly enter the socket notch of the connector at the lower end of the die taking rod, and the die is moved by the cooperation of the primary movable arm and the secondary movable arm, so that the die is convenient to replace, and the hinge rod and the die taking rod are in coordinated balance with each other in size, so that the utility model can be suitable for a narrow space in a blow molding machine under the condition of achieving