A spill-proof injection mold for pet supplies
Through innovative designs of anti-overflow and demolding devices, the problem of material overflow in pet product injection molds under high pressure and large gaps has been solved, achieving stable molding and rapid demolding, thereby improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏老树宠物用品有限公司
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional pet product injection molds are prone to overflow under high pressure and large gaps, resulting in product dimensional deviations and reduced appearance quality, as well as increased post-processing costs and time.
The device employs a combination of anti-overflow and demolding devices. It utilizes a cylinder-driven cross and limiting groove structure to precisely control the pressure of the mold pressing, combined with an overflow port to collect overflow material, and a bidirectional screw and slide bar to achieve rapid demolding.
It effectively prevents molten raw materials from overflowing, maintains product dimensional accuracy and appearance quality, reduces component wear, simplifies the demolding process, and reduces post-processing costs.
Smart Images
Figure CN224275976U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic processing and molding technology, specifically to an anti-overflow injection mold for pet supplies. Background Technology
[0002] With the rapid development of the pet economy, the pet supplies market continues to expand, placing higher demands on the production efficiency and quality of pet supplies.
[0003] Currently, traditional methods for preventing material overflow mainly rely on parting surface sealing and gate control. Parting surfaces reduce gaps by improving machining accuracy, using conical surfaces, or adding sealing rings; gates, on the other hand, control plastic flow rate and solidification time by optimizing size and type to prevent backflow and overflow. However, these methods present some problems. Traditional pet product injection molds typically employ simple parting surface sealing structures, which are difficult to adapt to different raw material characteristics and injection molding process requirements. When injection pressure is too high, mold clearance is too large, or the raw material has high fluidity, molten plastic easily overflows from the mold gaps, forming flash or burrs. This not only leads to product dimensional deviations and decreased appearance quality but also increases the cost and time of subsequent post-processing steps such as grinding and finishing. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a pet product injection mold that prevents overflow, solving the problems of overflow, inconvenient demolding, and poor component fit during pet product injection molding.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a pet supplies injection mold for preventing material overflow, comprising: a support frame, wherein an anti-overflow device is fixedly connected to the inner wall of the support frame, the anti-overflow device prevents material overflow by squeezing the raw material, a demolding device is slidably connected to the inner wall of the support frame, and a feed pipe is fixedly connected to the bottom end of the support frame. The anti-overflow device includes a cylinder, and a cross is fixedly connected to the bottom end of the cylinder. A limiting groove is slidably connected to the outer wall of the cross, and the limiting groove is formed in the wall of the mold. The cylinder in the anti-overflow device drives the cross to slide precisely along the limiting groove, thereby causing the mold to apply stable pressure to the raw material. Through precise control of the cylinder, the pressure of the mold can be adjusted in real time according to the characteristics of different pet supplies raw materials and the requirements of the injection molding process, effectively preventing the molten raw material from overflowing the mold gap.
[0008] Preferably, the outer wall of the cylinder is fixedly connected to the inner wall of the support frame, the bottom end of the pressing film contacts the outer wall of the demolding device through the workpiece, the cylinder is fixedly connected to the inner wall of the support frame, and with the guide structure of the cross and the limiting groove, the pressing film maintains stable operation during the extrusion of raw materials, reducing component wear caused by shaking or displacement.
[0009] Preferably, a baffle is fixedly connected to the top of the mold, and an overflow port is opened on the inner wall of the mold. The overflow port opened on the inner wall of the mold can collect a small amount of overflowing raw material and avoid overflowing contaminating the inside of the mold.
[0010] Preferably, the outer wall of the baffle is slidably connected to the outer wall of the demolding device via the workpiece, and the overflow port is in contact with the workpiece.
[0011] Preferably, the demolding device includes a mold body, the inner wall of which is threaded with a bidirectional screw, and the end of the mold body away from the bidirectional screw is slidably connected with a slide rod. The demolding device adopts a combination design of mold body, bidirectional screw and slide rod. By rotating the bidirectional screw, the mold body can be driven to slide symmetrically along the dovetail groove on the inner wall of the support frame to achieve fast and stable demolding.
[0012] Preferably, the bottom end of the mold body is symmetrically and slidably connected to the inner wall of the support frame through a dovetail groove, and the dovetail groove is opened inside the support frame. The outer wall of the bidirectional screw and the slide rod is rotatably connected to the inner wall of the support frame. The bottom end of the mold body is in contact with the output end of the feed pipe. The outer wall of the mold body is in contact with the bottom end of the pressing film through the processing object. The outer wall of the mold body is slidably connected to the outer wall of the baffle through the processing object.
[0013] Beneficial effects
[0014] This invention provides a pet supplies injection mold that prevents spillage. It has the following beneficial effects:
[0015] This utility model, through the combination of an anti-overflow device and a demolding device, and the precise control of a cylinder, can adjust the pressure of the molding die in real time according to the characteristics of different pet product raw materials and the requirements of the injection molding process. This effectively prevents molten raw materials from overflowing into the mold gap. At the same time, the overflow port opened on the inner wall of the molding die can collect a small amount of overflowing raw materials, preventing overflow from contaminating the inside of the mold. Combined with the guide structure of the cross and the limiting groove, the molding die maintains stable operation during the extrusion of raw materials, reducing component wear caused by shaking or deviation. The demolding device adopts a combination design of mold body, bidirectional screw and slide bar. By rotating the bidirectional screw, the mold body can be driven to slide symmetrically along the dovetail groove on the inner wall of the support frame, achieving fast and stable demolding. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0018] Figure 3 This is a schematic diagram of the cross structure of this utility model.
[0019] In the diagram: 1. Support frame; 2. Anti-overflow device; 20. Cylinder; 21. Cross; 22. Limiting groove; 23. Pressing film; 24. Baffle; 25. Overflow port; 3. Demolding device; 30. Mold body; 31. Bidirectional screw; 32. Slide rod; 4. Feed pipe. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example
[0022] Please see Figure 1-3 This utility model provides a technical solution: a pet supplies injection mold for preventing spillage, comprising:
[0023] Support frame 1, with an anti-overflow device 2 fixedly connected to the inner wall of support frame 1. The anti-overflow device 2 prevents the material from overflowing by squeezing it. Demolding device 3 is slidably connected to the inner wall of support frame 1. Feed pipe 4 is fixedly connected to the bottom end of support frame 1. In use, the material enters the demolding device 3 through the feed pipe 4, and then the anti-overflow device is activated for extrusion molding.
[0024] The anti-overflow device 2 includes a cylinder 20, with a cross 21 fixedly connected to the bottom end of the cylinder 20. A limiting groove 22 is slidably connected to the outer wall of the cross 21, and the limiting groove 22 is formed in the wall of the molding die 23. The outer wall of the cylinder 20 is fixedly connected to the inner wall of the support frame 1. The bottom end of the molding die 23 contacts the outer wall of the demolding device 3 through the workpiece. First, the feed pipe 4 is fixedly connected to the bottom end of the support frame 1 as the input channel for the raw material. During injection molding, the molten pet supplies raw material enters through the feed pipe 4. The material is directly conveyed to the bottom of the mold body 30. The bottom end of the mold body 30 is precisely connected to the output end of the feed pipe 4 to ensure that the raw material can be injected into the mold in a stable and smooth manner. The cylinder 20 in the anti-overflow device 2 is fixed to the inner wall of the support frame 1. When the raw material is injected into the mold body 30, the cylinder 20 is activated and drives the cross 21 at the bottom end to slide along the limiting groove 22 in the wall of the pressure film 23. Under the guidance and constraint of the limiting groove 22, the cross 21 drives the pressure film 23 to move vertically downward and applies uniform pressure to the raw material in the mold body 30.
[0025] A baffle 24 is fixedly connected to the top of the pressure mold 23. An overflow port 25 is opened on the inner wall of the pressure mold 23. The outer wall of the baffle 24 is slidably connected to the outer wall of the demolding device 3 through the workpiece. The overflow port 25 is in contact with the workpiece. At the same time, the overflow port 25 opened on the inner wall of the pressure mold 23 can collect a small amount of overflowing material in time, prevent overflow from spreading and contaminating the inside of the mold, and further ensure the overflow prevention effect.
[0026] The demolding device 3 includes a mold body 30. A bidirectional screw 31 is threadedly connected to the inner wall of the mold body 30. A slide rod 32 is slidably connected to the end of the mold body 30 away from the bidirectional screw 31. The bottom end of the mold body 30 is symmetrically slidably connected to the inner wall of the support frame 1 through a dovetail groove, which is located inside the support frame 1. The outer walls of the bidirectional screw 31 and the slide rod 32 are rotatably connected to the inner wall of the support frame 1. The bottom end of the mold body 30 contacts the output end of the feed pipe 4. The outer wall of the mold body 30 contacts the bottom end of the pressure mold 23 through the processing object. The outer wall of the mold body 30 is slidably connected to the outer wall of the baffle 24 through the processing object. After the product cools and solidifies, the demolding device 3 starts to work. By rotating the bidirectional screw 31, since the inner wall of the mold body 30 is threadedly connected to the bidirectional screw 31 and the other end of the mold body 30 is slidably connected to the slide rod 32, the rotation of the bidirectional screw 31 drives the mold body 30 to slide symmetrically along the dovetail groove of the inner wall of the support frame 1, smoothly pushing the molded pet supplies out of the mold.
[0027] In use, the material enters the demolding device 3 through the feed pipe 4, and then the anti-overflow device is activated for extrusion molding;
[0028] First, the feed pipe 4 is fixedly connected to the bottom of the support frame 1 as the input channel for raw materials. During injection molding, the molten pet supplies raw materials are directly transported to the bottom of the mold body 30 through the feed pipe 4. The bottom of the mold body 30 is precisely connected to the output end of the feed pipe 4 to ensure that the raw materials can be injected into the mold in a stable and smooth manner.
[0029] The cylinder 20 in the anti-overflow device 2 is fixed to the inner wall of the support frame 1. When the raw material is injected into the mold body 30, the cylinder 20 is started and drives the cross 21 at the bottom to slide along the limiting groove 22 in the wall of the pressure film 23. Under the guidance and constraint of the limiting groove 22, the cross 21 drives the pressure film 23 to move vertically downward and applies uniform pressure to the raw material in the mold body 30.
[0030] Meanwhile, the overflow port 25 opened on the inner wall of the pressure film 23 can collect a small amount of overflowing raw material in time, preventing the overflow from spreading and contaminating the inside of the mold, and further ensuring the overflow prevention effect.
[0031] During the downward movement of the baffle 24 at the top of the mold 23, it slides along the outer wall of the mold body 30 of the demolding device 3, which plays a role in auxiliary guidance and enhancing the structural stability of the anti-overflow device 2. Under the pressure of the anti-overflow device 2, the raw material in the mold body 30 fills the cavity in a stable pressure environment and gradually cools and solidifies into pet supplies. During this process, the mold body 30 and the mold 23 are closely matched to ensure that the raw material is formed in a closed space, avoids interference from external factors, and ensures the dimensional accuracy and appearance quality of the product.
[0032] After the product cools and solidifies, the demolding device 3 starts to work. By rotating the bidirectional screw 31, since the inner wall of the mold body 30 is threadedly connected to the bidirectional screw 31 and the other end of the mold body 30 is slidably connected to the slide rod 32, the rotation of the bidirectional screw 31 drives the mold body 30 to slide symmetrically along the dovetail groove of the inner wall of the support frame 1, and smoothly pushes the molded pet supplies out of the mold.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A pet product injection mold that prevents material overflow, comprising: Support frame (1), characterized in that: An anti-overflow device (2) is fixedly connected to the inner wall of the support frame (1). The anti-overflow device (2) prevents the material from overflowing by squeezing the raw material. A demolding device (3) is slidably connected to the inner wall of the support frame (1). A feed pipe (4) is fixedly connected to the bottom end of the support frame (1). The anti-overflow device (2) includes a cylinder (20), and a cross (21) is fixedly connected to the bottom end of the cylinder (20). A limiting groove (22) is slidably connected to the outer wall of the cross (21), and the limiting groove (22) is opened in the wall of the pressure film (23).
2. The pet product injection mold of claim 1, wherein: The outer wall of the cylinder (20) is fixedly connected to the inner wall of the support frame (1), and the bottom end of the pressure film (23) contacts the outer wall of the demolding device (3) through the workpiece.
3. A pet product injection mold that prevents material overflow according to claim 2, characterized in that: A baffle (24) is fixedly connected to the top of the pressure film (23), and an overflow port (25) is opened on the inner wall of the pressure film (23).
4. A pet product injection mold that prevents material overflow according to claim 3, characterized in that: The outer wall of the baffle (24) is slidably connected to the outer wall of the demolding device (3) through the workpiece, and the overflow port (25) is in contact with the workpiece.
5. The pet supplies injection mold for preventing spillage according to claim 1, characterized in that: The demolding device (3) includes a mold body (30), the inner wall of the mold body (30) is threaded with a bidirectional screw (31), and a slide rod (32) is slidably connected to one end of the mold body (30) away from the bidirectional screw (31).
6. The pet supplies injection mold for preventing spillage according to claim 5, characterized in that: The bottom end of the mold (30) is symmetrically slidably connected to the inner wall of the support frame (1) through a dovetail groove, and the dovetail groove is opened inside the support frame (1). The outer walls of the bidirectional screw (31) and the slide rod (32) are rotatably connected to the inner wall of the support frame (1). The bottom end of the mold (30) is in contact with the output end of the feed pipe (4). The outer wall of the mold (30) is in contact with the bottom end of the pressure film (23) through the processing object. The outer wall of the mold (30) is slidably connected to the outer wall of the baffle (24) through the processing object.