Tearable pipe forming die
By introducing a diversion and mandrel mechanism into the tearable tube forming mold, combined with the design of positioning blocks and dividing ribs, the problem of uneven tearing in existing molds is solved, and stable and uniform tearing of tearable tubes is achieved.
Patent Information
- Application Number
- CN202423006800.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing tearable tube forming molds have dimensional accuracy deviations in their easy-tear structure design, resulting in uneven tearing force, irregular tearing, and difficulty in forming a stable tearing path.
The system employs a flow-dividing mechanism and a mandrel mechanism. The mandrel mechanism is fixed to the inner wall of the die by a positioning block, ensuring stable installation. Multiple dividing ribs are set inside the tearable tube to form a uniform weakening groove, ensuring uniform material distribution and uniform tearing force distribution along a preset direction.
It achieves stable tearing of the tearable tube, avoids uneven material stress caused by mandrel offset, ensures consistent tearing path, reduces tearing difficulty, and avoids situations where it cannot be torn or is torn unevenly.
Smart Images

Figure CN223532809U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe mold technology, and in particular to a tearable pipe forming mold. Background Technology
[0002] Tearable tubes can be used as packaging containers, mainly for containing various semi-solid, paste, or liquid substances. The production process requires the use of tearable tube forming molds, which are key equipment for manufacturing tearable tubes. Through complex and ingenious design, they process various materials into tearable tubes.
[0003] However, in the existing technology, the existing tearable tube forming mold has the problem that the easy-tear structure design is not precise enough. The mold part used to form the easy-tear line may have deviations in dimensional accuracy, resulting in uneven width of the produced easy-tear line. When the user tries to tear the tearable tube, the material strength of the wider part is greater than that of the narrower part, which makes the tearing force not evenly distributed, resulting in irregular tearing and breaking. Utility Model Content
[0004] This utility model mainly provides a stable tearable tube forming mold.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tearable tube forming mold, including a diversion mechanism, a mandrel mechanism fixedly connected to the end of the diversion mechanism, the mandrel mechanism including a mandrel mounting base, a core tube fixedly connected to the side of the mandrel mounting base, and a dividing rib fixedly connected to the surface of the core tube, the dividing rib having a thickness of 0.45mm-0.55mm, and the height of the dividing rib being four-fifths of the thickness of the processed tearable tube.
[0006] Preferably, the diversion mechanism includes a diversion head, and a diversion mounting base is fixedly connected to the end of the diversion head.
[0007] Preferably, the mandrel mounting base is fixedly connected to the shunt mounting base.
[0008] Preferably, a mounting hole is provided at the center of the core tube.
[0009] Preferably, a plurality of dividing ribs are fixedly connected to the surface of the mounting hole, and the plurality of dividing ribs are evenly distributed on the surface of the mounting hole.
[0010] Preferably, two positioning blocks are fixedly connected to the side of the mandrel mounting base, and the two positioning blocks are symmetrically distributed on the surface of the mandrel mounting base.
[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0012] 1. In this utility model, the mandrel mechanism is inserted into the mold for fixed installation. The positioning block is connected to the inner wall of the mold through a matching slot, thereby improving the stability of the mandrel mechanism during installation and ensuring accurate installation position of the mandrel mechanism. Accurate installation position allows for uniform material distribution and stress transmission during the forming of the tearable tube. The degree of material weakening at the tearable position is consistent, allowing the tearing force to be evenly distributed along the preset direction. This avoids uneven material stress and unstable tearable structure parameters caused by mandrel offset, thus ensuring that the tearable tube breaks neatly as expected. It also helps to form a reasonable internal tube structure, avoiding excessive tearing resistance caused by tube deformation, uneven wall thickness, etc., and effectively preventing the situation where it cannot be torn.
[0013] 2. In this utility model, during the production and processing of the tearable tube, multiple dividing ribs are evenly distributed on the surface of the mounting hole, forming multiple tearable paths inside the tearable tube. By setting the dividing ribs to an appropriate height, a weakening groove of appropriate depth is formed inside the tearable tube, creating multiple tearable paths and planning a precise route for the tearing operation. This effectively avoids confusion in the tearing direction. Setting the dividing ribs to an appropriate height promotes the formation of a weakening groove of suitable depth inside the tube. This even distribution and appropriate depth design allows the tearing force to be evenly distributed along the set path and weakening groove, avoiding uneven breakage caused by uneven local force. The appropriate weakening groove depth reduces the difficulty of tearing, ensuring that the pipe can be torn stably, and solving the problem of not being able to tear due to a lack of effective tearing guidance and insufficient weakening. Attached Figure Description
[0014] Figure 1 A perspective view of a tearable tube forming mold is provided for this utility model;
[0015] Figure 2 A side view of a tearable tube forming mold is provided for this utility model;
[0016] Figure 3 This utility model presents a front view structural diagram of the mandrel mechanism in a tearable tube forming mold.
[0017] Legend: 1. Diverting mechanism; 11. Diverting head; 12. Diverting mounting base; 2. Core rod mechanism; 21. Core rod mounting base; 22. Core tube; 23. Mounting hole; 24. Dividing rib; 25. Positioning block. Detailed Implementation
[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Please see Figures 1-3 This utility model provides a technical solution: a tearable tube forming mold, including a diversion mechanism 1, a core rod mechanism 2 fixedly connected to the end of the diversion mechanism 1, the core rod mechanism 2 including a core rod mounting base 21, a core tube 22 fixedly connected to the side of the core rod mounting base 21, and a dividing rib 24 fixedly connected to the surface of the core tube 22. The thickness of the dividing rib 24 is 0.45mm-0.55mm, and the height of the dividing rib 24 is four-fifths of the thickness of the processed tearable tube.
[0021] like Figure 1 As shown, the diversion mechanism 1 includes a diversion head 11, and a diversion mounting base 12 is fixedly connected to the end of the diversion head 11. The diversion mounting base 12 facilitates the fixed installation of the diversion mechanism 1 and the mandrel mechanism 2.
[0022] like Figure 2 As shown, the mandrel mounting base 21 is fixedly connected to the diversion mounting base 12, and the mandrel mechanism 2 and the diversion mechanism 1 are fixedly installed through the mandrel mounting base 21.
[0023] like Figure 1 As shown, a mounting hole 23 is provided at the center of the core tube 22, which facilitates the positioning and installation of mounting bolts.
[0024] like Figure 1 As shown, a plurality of dividing ribs 24 are fixedly connected to the surface of the mounting hole 23. The plurality of dividing ribs 24 are evenly distributed on the surface of the mounting hole 23, and multiple tearable paths can be formed inside the tearable tube through the plurality of dividing ribs 24.
[0025] like Figure 1 As shown, two positioning blocks 25 are fixedly connected to the side of the mandrel mounting base 21. The two positioning blocks 25 are symmetrically distributed on the surface of the mandrel mounting base 21. The positioning blocks 25 are connected to the inner wall of the die by fitting slots, thereby improving the stability of the mandrel mechanism 2 when it is installed with the die, and ensuring the accurate installation position of the mandrel mechanism 2.
[0026] The method of use and working principle of this device: The mandrel mounting base 21 and the diversion mounting base 12 are fixedly connected by mounting bolts, thereby fixing the diversion mechanism 1 and the mandrel mechanism 2. Then, the mandrel mechanism 2 is inserted into the mold for fixed installation. The positioning block 25 is connected to the mold inner wall by a matching slot, thereby improving the stability of the mandrel mechanism 2 during installation and ensuring the accurate installation position of the mandrel mechanism 2.
[0027] During the production and processing of tearable tubes, multiple tearable paths can be formed inside the tearable tube by evenly distributing multiple dividing ribs 24 on the surface of the mounting hole 23. By setting the dividing ribs 24 to an appropriate height, a weakening groove of appropriate depth can be formed inside the tearable tube.
[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A tearable tube forming mold, comprising a diversion mechanism (1), wherein a mandrel mechanism (2) is fixedly connected to the end of the diversion mechanism (1), characterized in that: The mandrel mechanism (2) includes a mandrel mounting base (21), a core tube (22) is fixedly connected to the side of the mandrel mounting base (21), and a dividing rib (24) is fixedly connected to the surface of the core tube (22). The thickness of the dividing rib (24) is 0.45mm-0.55mm, and the height of the dividing rib (24) is four-fifths of the thickness of the processed tearable tube.
2. The tearable tube forming mold according to claim 1, characterized in that: The diversion mechanism (1) includes a diversion head (11), and a diversion mounting base (12) is fixedly connected to the end of the diversion head (11).
3. The tearable tube forming mold according to claim 1, characterized in that: The mandrel mounting base (21) is fixedly connected to the shunt mounting base (12).
4. The tearable tube forming mold according to claim 1, characterized in that: A mounting hole (23) is provided at the center of the core tube (22).
5. The tearable tube forming mold according to claim 4, characterized in that: Multiple dividing ribs (24) are fixedly connected to the surface of the mounting hole (23), and the multiple dividing ribs (24) are evenly distributed on the surface of the mounting hole (23).
6. The tearable tube forming mold according to claim 1, characterized in that: Two positioning blocks (25) are fixedly connected to the side of the mandrel mounting base (21), and the two positioning blocks (25) are symmetrically distributed on the surface of the mandrel mounting base (21).