Demoulding device for plastic tank body
By designing a hinged semi-circular mold and a hydraulically driven arc mold, the problem of difficult demolding after the plastic can is formed is solved, achieving an efficient and stable demolding process and saving labor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KENSION NEW MATERIAL TECH (SUQIAN) CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-08
AI Technical Summary
In existing technologies, it is difficult to demold plastic tanks after molding, which consumes a lot of labor.
The system employs a semi-circular first tank mold and a second tank mold that are hinged together, combined with an arc-shaped mold driven by a hydraulic rod and a V-shaped connecting block. Stable demolding is achieved through a sloping end design and a reinforcing rib structure.
It improves demolding efficiency, saves labor, and enhances the stability of the demolding process and the structure.
Smart Images

Figure CN224210322U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a demolding device for plastic cans, belonging to the field of automatic control technology. Background Technology
[0002] Common plastic granules can be classified into general-purpose plastics, engineering plastics, and specialty plastics. General-purpose plastics include polyethylene, polystyrene, polyvinyl chloride, and polypropylene. These plastics are widely used in daily necessities and industrial products. The existing production process melts the powder onto the outer wall of the mold, making demolding of the formed cans extremely difficult and labor-intensive. Utility Model Content
[0003] This utility model discloses a demolding device for plastic cans, which aims to solve the problem of difficulty in demolding cans after molding.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a semi-circular first tank mold and a second tank mold hinged together, wherein the first tank mold and the second tank mold are provided with a plurality of first semi-circular reinforcing ribs and second semi-circular reinforcing ribs longitudinally along their inner walls, wherein the first semi-circular reinforcing ribs are provided with a plurality of transverse first connecting columns at both ends, and the second semi-circular reinforcing ribs are provided with a plurality of transverse second connecting columns at both ends, wherein the second connecting columns are provided with a third connecting column along the axial direction, wherein the first tank mold is provided with a demolding mechanism at its outer end, and wherein the third connecting column and the demolding mechanism are provided with a plurality of hydraulic rods.
[0005] Furthermore, the demolding mechanism includes an arc-shaped mold and a V-shaped connecting block. The lower end of the arc-shaped mold is hinged to the end of the second tank mold, and the upper inner side of the arc-shaped mold is connected to the first tank mold through a pair of V-shaped connecting blocks.
[0006] Furthermore, the outer end of the hydraulic rod telescopic spindle is connected to the inner side of the upper end of the arc-shaped mold.
[0007] Furthermore, the first tank mold has a first inclined end on the inward side, and the arc-shaped mold has a second inclined end on the outward side that cooperates with the first inclined end.
[0008] Furthermore, the two ends of the V-shaped connecting block are connected to the inner shafts of the first tank mold and the arc mold.
[0009] Furthermore, the first semi-circular reinforcing rib and the second semi-circular reinforcing rib are provided with rectangular protrusions, and a plurality of connecting rods are respectively provided between the first semi-circular reinforcing rib and the first connecting post, and between the second semi-circular reinforcing rib and the second connecting post.
[0010] Furthermore, the inner side of the hydraulic rod is connected to the third connecting column bushing.
[0011] Furthermore, several diagonal braces are provided between the first semi-circular reinforcing rib and the first connecting column, the second semi-circular reinforcing rib and the second connecting column.
[0012] The beneficial effects of this utility model are:
[0013] (1) The lower end of the arc mold is hinged to the end of the second tank mold, and the upper end of the inner side of the arc mold is connected to the first tank mold through a pair of V-shaped connecting blocks. The outer end of the hydraulic rod telescopic main shaft is connected to the inner side of the upper end of the arc mold. This structure improves the demolding efficiency and saves a lot of labor.
[0014] (2) The first tank mold has a first inclined end on the inner side, and the arc mold has a second inclined end on the outer side that matches the first inclined end, so as to avoid the first tank mold and the arc mold getting stuck during demolding and improve the stability of demolding.
[0015] (3) The first semi-circular reinforcing rib and the second semi-circular reinforcing rib are provided with rectangular protrusions. Several connecting rods are provided between the first semi-circular reinforcing rib and the first connecting column, and between the second semi-circular reinforcing rib and the second connecting column, to improve the structural stability of the first tank mold and the second tank mold. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a partially enlarged view of the present invention;
[0018] Figure 3 This is a partial schematic diagram of the balancing component of this utility model.
[0019] In the figure, 1-first tank mold, 2-second tank mold, 3-first semi-circular reinforcing rib, 4-second semi-circular reinforcing rib, 5-first connecting column, 6-second connecting column, 7-third connecting column, 8-demolding mechanism, 9-hydraulic rod, 10-rectangular groove, 11-diagonal brace;
[0020] 1a - First slope end;
[0021] 8a - Arc-shaped mold, 8b - V-shaped connecting block, 8c - Second ramp end. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. The following embodiments will enable those skilled in the art to gain a more comprehensive understanding of the present invention, but these embodiments are not intended to limit the scope of protection of the present invention. The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0023] Please see Figures 1 to 3 This utility model provides a technical solution for a plastic can demolding device: it includes a semi-circular first can mold 1 and a second can mold 2 that are hinged to each other. The first can mold 1 and the second can mold 2 are provided with a plurality of first semi-circular reinforcing ribs 3 and second semi-circular reinforcing ribs 4 along the inner wall longitudinally. The first semi-circular reinforcing ribs 3 are provided with a plurality of transverse first connecting columns 5 at both ends. The second semi-circular reinforcing ribs 4 are provided with a plurality of transverse second connecting columns 6 at both ends. The second connecting columns 6 are provided with a third connecting column 7 along the axial direction. The outer end of the first can mold 1 is provided with a demolding mechanism 8. The third connecting column 7 and the demolding mechanism 8 are provided with a plurality of hydraulic rods 9.
[0024] Please see Figures 1 to 3 The demolding mechanism 8 includes an arc-shaped mold 8a and a V-shaped connecting block 8b. The lower end of the arc-shaped mold 8a is hinged to the end of the second tank mold 2, and the upper end of the inner side of the arc-shaped mold 8a is connected to the first tank mold 1 through a pair of V-shaped connecting blocks 8b.
[0025] Please see Figures 1 to 3 The outer end of the telescopic spindle of the hydraulic rod 9 is connected to the inner side of the upper end of the arc mold 8a. This structure improves the demolding efficiency and saves a lot of labor.
[0026] Please see Figures 1 to 3 The first tank mold 1 has a first inclined end 1a on the inner side, and the arc mold 8a has a second inclined end 8c on the outer side that cooperates with the first inclined end 1a, so as to avoid the first tank mold 1 and the arc mold 8a getting stuck during demolding and improve the stability of demolding.
[0027] Please see Figures 1 to 3 The two ends of the V-shaped connecting block 8b are connected to the inner shafts of the first tank mold 1 and the arc mold 8a.
[0028] Please see Figures 1 to 3 The first semi-circular reinforcing rib 3 and the second semi-circular reinforcing rib 4 are provided with rectangular protrusions 10. Several connecting rods are provided between the first semi-circular reinforcing rib 3 and the first connecting column 5, and between the second semi-circular reinforcing rib 4 and the second connecting column 6, to improve the structural stability of the first tank mold 1 and the second tank mold.
[0029] Please see Figure 1 The inner side of the hydraulic rod 9 is connected to the bushing of the third connecting column 7.
[0030] Please see Figures 1 to 3 Several diagonal braces 11 are provided between the first semi-circular reinforcing rib 3 and the first connecting column 5, the second semi-circular reinforcing rib 4 and the second connecting column 6 to improve the structural stability of the first tank mold 1 and the second tank mold.
[0031] Working principle: Please refer to Figures 1 to 3 After the plastic can is formed, it is fitted onto the outer wall of the first can mold 1 and the second can mold 2. The hydraulic rod 9 drives the arc mold 8a to move inward along the V-shaped connecting block 8b, and the first can mold 1 moves downward to demold.
[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A demolding device for plastic cans, characterized in that: The mold includes a semi-circular first tank mold (1) and a second tank mold (2) that are hinged to each other. The first tank mold (1) and the second tank mold (2) are provided with a number of first semi-circular reinforcing ribs (3) and second semi-circular reinforcing ribs (4) along the inner wall. The first semi-circular reinforcing ribs (3) are provided with a number of transverse first connecting columns (5) at both ends. The second semi-circular reinforcing ribs (4) are provided with a number of transverse second connecting columns (6) at both ends. The second connecting columns (6) are provided with a third connecting column (7) along the axial direction. The first tank mold (1) is provided with a demolding mechanism (8) at the outer end. The third connecting column (7) and the demolding mechanism (8) are provided with a number of hydraulic rods (9).
2. The demolding device for plastic cans according to claim 1, characterized in that: The demolding mechanism (8) includes an arc-shaped mold (8a) and a V-shaped connecting block (8b). The lower end of the arc-shaped mold (8a) is hinged to the end of the second tank mold (2). The upper end of the inner side of the arc-shaped mold (8a) is connected to the first tank mold (1) through a pair of V-shaped connecting blocks (8b).
3. A demolding device for plastic cans according to claim 2, characterized in that: The outer end of the telescopic main shaft of the hydraulic rod (9) is connected to the inner side of the upper end of the arc-shaped mold (8a).
4. A demolding device for plastic cans according to claim 2, characterized in that: The first tank mold (1) has a first inclined end (1a) on the inner side, and the arc mold (8a) has a second inclined end (8c) on the outer side that cooperates with the first inclined end (1a).
5. A demolding device for plastic cans according to claim 2, characterized in that: The two ends of the V-shaped connecting block (8b) are connected to the inner shafts of the first tank mold (1) and the arc mold (8a).
6. A demolding device for plastic cans according to claim 1, characterized in that: The first semi-circular reinforcing rib (3) and the second semi-circular reinforcing rib (4) are provided with rectangular protrusions (10), and a number of connecting rods are respectively provided between the first semi-circular reinforcing rib (3) and the first connecting column (5), and between the second semi-circular reinforcing rib (4) and the second connecting column (6).
7. A demolding device for plastic cans according to claim 1, characterized in that: The inner side of the hydraulic rod (9) is connected to the bushing of the third connecting column (7).
8. A demolding device for plastic cans according to claim 1, characterized in that: Several diagonal braces (11) are provided between the first semi-circular reinforcing rib (3) and the first connecting column (5), the second semi-circular reinforcing rib (4) and the second connecting column (6).