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CN-121973387-A - Injection structure of injection molding machine

CN121973387ACN 121973387 ACN121973387 ACN 121973387ACN-121973387-A

Abstract

The invention relates to the field of manufacturing of injection molding machines and discloses an injection structure of an injection molding machine, which comprises a machine barrel, wherein the machine barrel comprises a body section and a mounting section which are connected with each other, the outer diameter of the body section is smaller than the outer diameter of the mounting section, a stepped surface is formed between the body section and the mounting section, an assembly annular groove is formed in the outer annular wall of one end of the mounting section far away from the body section, the end wall of one end of the assembly annular groove far away from the body section is inclined, a matching section with the caliber gradually reduced towards the direction of the body section is formed, a shooting table front plate is sleeved on the mounting section, and an assembly component comprises two wedge blocks symmetrically and a locking component for connecting the two wedge blocks to control the cohesion distance of the two wedge blocks, wherein the inclined driving surface of the wedge blocks is attached to the matching section, the machine barrel axially displaces along with the shrinkage of the cohesion distance of the two wedge blocks, and the stepped surface approaches to the shooting table front plate until the two wedge blocks are in butt joint.

Inventors

  • ZHANG LIWEI
  • LIN CHAO
  • DU JU

Assignees

  • 海天塑机集团有限公司

Dates

Publication Date
20260505
Application Date
20260306

Claims (10)

  1. 1. An injection structure of an injection molding machine, comprising: The machine barrel (1) comprises a body section (101) and a mounting section (102) which are connected with each other, wherein the outer diameter of the mounting section (102) is smaller than that of the body section (101), a stepped surface (103) is formed between the body section (101) and the mounting section (102), an assembly annular groove (11) is formed in the outer annular wall of one end, far away from the body section (101), of the mounting section (102), and the end wall, far away from the body section (101), of the assembly annular groove (11) is inclined and forms a matching section (12) with the caliber gradually decreasing towards the direction of the body section; A shooting table front plate (3) sleeved on the mounting section (102); the assembly component comprises two wedges (4) symmetrically enmeshed on the matching section (12) and a locking component for connecting the two wedges (4) to control the enmeshed distance of the two wedges; The oblique driving surface (13) of the wedge blocks (4) is attached to the matching section (12), and along with the reduction of the cohesion distance of the two wedge blocks (4), the machine barrel (1) is axially displaced, and the step surface (103) approaches the shooting table front plate (3) until the two wedge blocks are in abutting fit.
  2. 2. The injection structure of an injection molding machine according to claim 1, wherein the locking assembly comprises a first locking bolt (5), a first through hole (8) and a first threaded hole (9), the first through hole (8) is symmetrically arranged on two sides of one wedge block (4), the first threaded hole (9) is symmetrically arranged on two sides of the other wedge block (4), the first through hole (8) is opposite to the first threaded hole (9), and the first locking bolt (5) passes through the first through hole (8) to be in threaded connection with the first threaded hole (9).
  3. 3. An injection structure of an injection molding machine according to claim 2, characterized in that a locking assembly is provided between the wedges (4) and the table front plate (3) for securing the wedges (4) and the table front plate (3) when the wedges (4) are clasped to a predetermined extent.
  4. 4. An injection structure of an injection molding machine according to claim 3, wherein the locking assembly comprises a second locking bolt (6), a second through hole (10) and a second threaded hole, the second through hole (10) is formed in the wedge (4), the second threaded hole is formed in the shooting table front plate (3), and the second locking bolt (6) passes through the second through hole (10) to be in threaded connection with the second threaded hole.
  5. 5. An injection structure of an injection molding machine according to claim 4, wherein the locking assemblies are arranged in a plurality of groups spaced circumferentially around the barrel (1).
  6. 6. The injection structure of an injection molding machine according to claim 4, wherein the wedge (4) provided with the first through hole (8) is provided with a weight-reducing slit (7), and the first through hole (8) is located at the bottom of the weight-reducing slit (7).
  7. 7. The injection structure of an injection molding machine according to claim 1, wherein the installation section (102) is sleeved with a water block (2), the water block (2) is located at one end close to the body section (101), and the water block (2) is respectively in abutting fit with the injection table front plate (3) and the step surface (103).
  8. 8. An injection structure of an injection molding machine according to claim 1, wherein the generatrix of the mating section (12) is a straight line or a curved line having a predetermined slope.
  9. 9. The injection structure of an injection molding machine according to claim 1, wherein the oblique driving surface (13) of the wedge (4) is an oblique cambered surface matched with the mating section (12).
  10. 10. An injection structure of an injection molding machine according to claim 1, characterized in that the angle between the generatrix of the mating section (12) and the axis of the barrel (1) is between 50 ° -70 °.

Description

Injection structure of injection molding machine Technical Field The invention relates to the field of injection molding machine manufacturing, in particular to an injection structure of an injection molding machine. Background In the process of assembling and maintaining the machine barrel of the injection molding machine, the fixing and disassembling efficiency of the machine barrel directly depends on the labor saving property of the assembling operation, and the structure commonly adopted in the current industry is that the tight fit of the front plate of the injection table, the machine barrel and the water block is realized by utilizing the threaded fit of the tight nut and the machine barrel, and then the tight nut is screwed into the tight nut loosening opening by utilizing the deformation screw to deform the tight nut screw pitch, so that the anti-loosening effect is achieved. In the existing assembly mode, the locking direction of the fastening nut is the same as the locking direction of the front plate of the shooting table and the machine barrel, in order to prevent loosening after assembly of the fastening nut and the machine barrel, enough pretightening force needs to be ensured, and the fastening nut and the machine barrel must be assembled by means of heavy tools such as an electric pick, so that assembly is laborious, and the follow-up disassembly is difficult due to the overlarge pretightening force. Disclosure of Invention Aiming at the defects of laborious disassembly and assembly of the front plate and the machine barrel of the injection table by utilizing the tight nut in the prior art, the invention provides an injection structure of an injection molding machine with more labor-saving assembly. In order to solve the technical problems, the invention is solved by the following technical scheme: An injection structure of an injection molding machine, comprising: The machine barrel comprises a body section and a mounting section which are connected with each other, wherein the outer diameter of the mounting section is smaller than that of the body section, a stepped surface is formed between the body section and the mounting section, an assembly annular groove is formed in the outer annular wall of one end of the mounting section, which is far away from the body section, and the end wall of one end of the assembly annular groove, which is far away from the body section, is inclined and forms a matching section with the caliber gradually decreasing towards the direction of the body section; the shooting table front plate is sleeved on the mounting section; The assembly component comprises two wedges symmetrically enmeshed on the matching section and a locking component for connecting the two wedges to control the enmeshed distance of the two wedges; The oblique driving surface of the wedge block is attached to the matching section, and the barrel is axially displaced along with the reduction of the cohesion distance of the two wedge blocks, and the ladder faces the front plate of the shooting table to approach until the two wedge blocks are in butt fit. By adopting the scheme, the additionally arranged assembly components are labor-saving in mounting or dismounting the front plate of the shooting table and the machine barrel, and the problem of loosening is not easy to occur after assembly, because when the two wedges are held by the locking components, the force application direction of the locking components is not the same direction as the locking direction of the machine barrel and the front plate of the shooting table, the wedges cannot move due to the reaction force of the locking force of the machine barrel and the front plate of the shooting table, and the problem of loosening occurs after assembly of the machine barrel and the front plate of the shooting table, so that too large pretightening force is not needed, the effect of mounting labor saving is achieved without using heavy tools, and in the same way, the dismounting force cannot be influenced by the reaction force caused by unlocking the front plate of the shooting table and the machine barrel, and the dismounting is convenient and labor-saving. Preferably, the locking assembly comprises a first locking bolt, a first through hole and a first threaded hole, wherein the first through hole is symmetrically arranged on two sides of one wedge block, the first threaded hole is symmetrically arranged on two sides of the other wedge block, the first through hole is opposite to the first threaded hole, and the first locking bolt passes through the first through hole and is in threaded connection with the first threaded hole. By adopting the scheme, the two sides of the two wedge blocks are locked through the first locking bolts, the stress is balanced, the problem of unilateral unbalanced load cannot occur, the locking direction of the first locking bolts is not in the same direction as the locking direction of the front plate of t