CN-224224485-U - Plastic extrusion die for soft PVC water stop

Abstract

The utility model discloses a plastic extrusion die for a soft PVC water stop belt, which comprises an upper die, a lower die and a firewood field coupler, wherein the lower die is arranged below the upper die, firewood field couplers are arranged on two sides of the upper die and the lower die, the firewood field coupler consists of two upper hooks and two lower hooks which are consistent in structure, two symmetrical upper hooks are arranged on the outer walls of two sides of the upper die, and two symmetrical lower hooks are arranged on the outer walls of two sides of the lower die. The device replaces the traditional threaded connection through the firewood field coupler, achieves the effects of quick automatic die assembly and stable and reliable locking of the die, and solves the problems that the existing device lacks a high-efficiency automatic locking function and is insufficient in die assembly stability.

Inventors

• ZHANG GONGYONG
• CHEN GUOLIN
• WAN CHUNFEN

Assignees

• 中德科技(黄石)股份有限公司

Dates

Publication Date

20260512

Application Date

20250528

Claims (6)

1. 1. The utility model provides a soft PVC waterstop plastics extrusion tooling, includes mould (4), bed die (5) and faggot coupling (2), it is equipped with bed die (5) to go up mould (4) below, it all is equipped with faggot coupling (2) with bed die (5) both sides to go up mould (4), its characterized in that: The firewood field coupler (2) is composed of an upper clamping hook (3) and a lower clamping hook (6) which are identical in structure, two symmetrical upper clamping hooks (3) are arranged on the outer walls of two sides of the upper die (4), and two symmetrical lower clamping hooks (6) are arranged on the outer walls of two sides of the lower die (5).
2. 2. The plastic extrusion die for the soft PVC water stop belt is characterized in that the upper clamping hook (3) is provided with a shell (17), one end of the shell (17) is provided with a hook head (13), one side of the shell (17) is provided with an arc-shaped groove (15), and the arc-shaped groove (15) is provided with a hook tongue (8).
3. 3. The plastic extrusion die for the soft PVC water stop belt is characterized in that the outer wall of one side of the coupler knuckle (8) is fixedly connected with one end of the operating rod (11), a first sliding groove (12) is formed in one side of the arc-shaped groove (15), a second sliding groove (14) is formed in one side of the shell (17), and the operating rod (11) penetrates through the second sliding groove (14) and extends out of the shell (17).
4. 4. A plastic extrusion die for soft PVC water stop strips according to claim 3, wherein the housing (17) is internally provided with a slot (16), and the slot (16) is positioned between the arc-shaped slot (15) and the housing (17).
5. 5. The plastic extrusion die for the soft PVC water stop belt is characterized in that a spring (9) is arranged in the shell (17), two ends of the spring (9) are fixedly connected with connecting hooks (10), one end of the connecting hooks (10) is connected with an operating rod (11), and the other end of the connecting hooks (10) is connected with the inner wall of the shell (17).
6. 6. The plastic extrusion die for the soft PVC water stop belt is characterized in that the upper die (4) and the lower die (5) are respectively provided with two forming grooves (7), and two symmetrical handles (1) are arranged on two sides of the upper die (4).

Description

Plastic extrusion die for soft PVC water stop Technical Field The utility model relates to the technical field of material processing, in particular to a plastic extrusion die for a soft PVC water stop belt. Background In the manufacturing field of traditional soft PVC waterstop extrusion dies, the die closure is realized by adopting a bolt fastening or hydraulic die locking mode. The traditional technologies have obvious limitations that the bolt fastening mode is complex in operation, needs to be screwed one by means of tools, is time-consuming and labor-consuming, is difficult to ensure that all parts are uniformly stressed, and has the disadvantages that the hydraulic mode locking system is high in automation degree, complex in equipment and high in maintenance cost, and the risk of pollution products caused by leakage of hydraulic oil exists. Particularly, under the extrusion working condition of high temperature and high pressure, the problems of stress concentration, mold deformation and the like easily occur in the traditional mode locking structure, and the dimensional accuracy and the surface quality of the water stop belt are affected. In addition, the quick die change performance of the existing die is poor, and the existing die is difficult to meet the flexible production requirements of products with multiple specifications. These problems severely restrict the production efficiency and quality stability of PVC water-stop tapes, and a new mold locking mechanism is needed to solve these technical bottlenecks. Through searching, the patent with the Chinese patent publication number of CN221022255U discloses a stable plastic extrusion die which comprises a base, a lower die symmetrically arranged on the surface of the base and an upper die arranged on the surface of the lower die, wherein a limiting component is arranged at the joint of one side of the lower die and one side of the upper die and consists of a limiting block and a limiting groove, the limiting block is fixed at the bottom end of one side of the upper die, the limiting groove is formed in the surface of one side of the lower die, the limiting block is clamped into the inner side of the limiting groove, the limiting component is designed to improve the use process of the original plastic extrusion die, when the upper die is repeatedly unfolded and closed, the joint of a connecting piece, the upper die and the lower die is loosened, the upper die is deviated after being closed, an unstable phenomenon exists, the position of the upper die is prevented from deviating after being repeatedly unfolded and closed by arranging the limiting component at the joint of one side of the upper die, and the stability of the upper die after being closed is ensured. However, the device is only provided with a limit on one side, so that the die is easy to skew, the limit block and the notch are easy to abrade after long-term friction, and the problem of thermal expansion of the die is not considered. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides a soft PVC water stop plastic extrusion die, which solves the problems of the existing device that the existing device lacks a high-efficiency automatic locking function and has insufficient die assembly stability. The soft PVC water stop plastic extrusion die comprises an upper die, a lower die and a firewood field coupler, wherein the lower die is arranged below the upper die, the firewood field coupler is arranged on two sides of the upper die and the lower die, the firewood field coupler consists of two upper hooks and two lower hooks which are consistent in structure, two symmetrical upper hooks are arranged on the outer walls of two sides of the upper die, and two symmetrical lower hooks are arranged on the outer walls of two sides of the lower die. Preferably, the upper clamping hook is provided with a shell, one end of the shell is provided with a hook head, one side of the shell is provided with an arc-shaped groove, and the arc-shaped groove is provided with a hook tongue. Preferably, the outer wall of one side of the coupler knuckle is fixedly connected with one end of the operating rod, a first chute is arranged on one side of the arc-shaped groove, a second chute is arranged on one side of the shell, and the operating rod penetrates through the second chute and extends out of the shell. Preferably, a slot is arranged in the shell, and the slot is positioned between the arc-shaped slot and the shell. Preferably, a spring is arranged in the shell, two ends of the spring are fixedly connected with connecting hooks, one end of the connecting hooks is connected with the operating rod, and the other end of the connecting hooks is connected with the inner wall of the shell. Preferably, the upper die and the lower die are both provided with two forming grooves, and two symmetrical handles are arranged on two sides of the upper die. The utility model provide