Automatic water gap cutting structure of TPE (Thermoplastic Elastomer) automobile foot mat injection molding mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to an automatic water gap cutting structure of a TPE (thermoplastic elastomer) automobile foot mat injection molding mold. The automobile foot mat forming die comprises an automobile foot mat forming lower die and an automobile foot mat forming upper die, and forming protrusions are arranged on the automobile foot mat forming lower die. By means of precise mold matching, all parts, including positioning buckles and stripes, of the automobile foot mat can be formed in a high-precision mode, the size precision and shape accuracy of products are powerfully guaranteed, special forming requirements of specific parts can be met due to the arrangement of the main driving foot containing plate forming insert, and production efficiency is improved. The device greatly improves the functionality and applicability of a product, achieves synchronous efficient operation of ejection and cutting through a split-flow type automatic water gap cutting structure, abandons low efficiency and instability of traditional manual water gap cutting, remarkably improves the production efficiency, reduces the labor cost, is stable and reliable in water gap cutting quality, avoids damage to the product, and reduces the production cost. And the product quality is comprehensively improved.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to an automatic gate cutting structure for TPE car floor mat injection molding mold. Background Technology

[0002] In the injection molding process of TPE car floor mats, traditional sprue cutting methods often require manual operation, which is not only inefficient but also results in inconsistent sprue quality, easily damaging the product. Furthermore, manual sprue cutting increases production costs and labor intensity. Therefore, there is an urgent need to design an automatic sprue cutting structure for TPE car floor mat injection molding dies that can overcome these shortcomings.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a high tensile strength, wear-resistant TPE environmentally friendly car floor mat injection molding mold [application number: 201921358591.4]. This mold includes an upper mold and a lower mold, each with an upper molding surface and a matching lower molding surface. The upper and lower molding surfaces combine to form a molding cavity. The lower molding surface has a first protrusion protruding towards the molding cavity in its center, and two additional upward-protruding protrusions (a second and a third) at its edge. A recessed portion on the lower molding surface between the first, second, and third protrusions forms a water guide channel. However, after molding, this solution still requires manual operation for sprue cutting, resulting in inconsistent sprue quality, potential product damage, and increased production costs and labor intensity. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing an automatic gate cutting structure for TPE car floor mat injection molding molds.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic gate-cutting structure for a TPE car floor mat injection molding die includes a lower mold and an upper mold. The lower mold has a molding protrusion with a positioning buckle lower part and a stripe lower part. The upper mold has a molding cavity with a positioning buckle upper part and a stripe upper part. The positioning buckle lower part and the positioning buckle upper part are positioned and matched in shape, and the stripe lower part and the stripe upper part are positioned and matched in shape. A driver's footrest insert is provided between the lower and upper molds. An injection main board is provided above the upper mold, and a flow-diverting automatic gate-cutting structure is provided between the injection main board and the upper mold.

[0007] In the above-mentioned automatic gate cutting structure of TPE car floor mat injection molding mold, the flow-dividing automatic gate cutting structure includes an injection diversion plate disposed between the injection main plate and the upper mold of the car floor mat. The injection diversion plate is provided with an injection main pipe at the top and a plurality of injection diversion tubes at the bottom. The injection diversion tubes are provided with built-in ejector pin assemblies that can reciprocate linearly in the vertical direction.

[0008] In the above-mentioned automatic gate cutting structure of TPE car floor mat injection molding mold, the built-in ejector assembly includes a cutting ejector pin disposed in the injection manifold, and the cutting ejector pin and the injection manifold form a discharge channel.

[0009] In the above-mentioned automatic gate cutting structure of TPE car floor mat injection molding mold, the injection manifold is equipped with a driving component, which is connected to the cutting ejector pin.

[0010] In the above-mentioned automatic gate cutting structure of TPE car floor mat injection molding mold, the driving component includes a cylinder disposed on the injection manifold, and the power shaft of the cylinder is connected to the cutting ejector pin.

[0011] In the above-mentioned automatic gate cutting structure of TPE car floor mat injection molding mold, the lower part of the positioning buckle molding includes a positioning buckle molding cavity disposed on the molding protrusion, and the positioning buckle molding cavity has a molding lower ring.

[0012] In the above-mentioned automatic gate cutting structure of TPE car floor mat injection molding mold, the upper part of the positioning buckle molding includes an upper molding ring set in the upper mold of the car floor mat molding, and the lower molding ring is set opposite to the upper molding ring.

[0013] In the above-mentioned automatic gate cutting structure of TPE car floor mat injection molding mold, the stripe molding lower part includes stripe molding protrusions disposed on the molding protrusions.

[0014] In the above-mentioned automatic gate cutting structure of TPE car floor mat injection molding mold, the upper part of the positioning buckle molding includes a striped molding groove set in the molding cavity, and the striped molding protrusion corresponds to the striped molding groove in position and is matched in shape.

[0015] In the above-mentioned automatic gate cutting structure of TPE car floor mat injection molding mold, the driver's foot placement plate molding insert includes a driver's foot placement plate molding insert disposed between the lower mold and the upper mold of the car floor mat.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] This invention, through precise mold matching, can precisely mold various parts of car floor mats, including positioning buckles and stripes, effectively ensuring the dimensional accuracy and shape precision of the product. The setting of the driver's footrest plate molding insert can meet the special molding requirements of specific parts, greatly improving the functionality and applicability of the product. The diversion-type automatic sprue cutting structure realizes efficient operation of simultaneous ejection and cutting, eliminating the inefficiency and instability of traditional manual sprue cutting. It not only significantly improves production efficiency and reduces labor costs, but also ensures stable and reliable sprue cutting quality, avoiding damage to the product and comprehensively improving product quality.

[0018] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partial structural schematic diagram of the present invention.

[0021] Figure 3 This is a partial structural schematic diagram of another aspect of this utility model.

[0022] Figure 4 This is a schematic diagram of a diversion-type automatic water cutter structure.

[0023] Figure 5 This is a schematic diagram of the upper mold for molding car floor mats.

[0024] In the diagram: 1. Lower mold for car floor mats; 2. Upper mold for car floor mats; 3. Molding protrusion; 4. Lower part of positioning buckle molding; 5. Lower part of stripe molding; 6. Molding cavity; 7. Upper part of positioning buckle molding; 8. Upper part of stripe molding; 9. Insert for driver's footrest panel molding; 10. Main injection board; 11. Automatic sprue cutter structure; 12. Injection manifold; 13. Main injection pipe; 14. Built-in ejector assembly; 15. Cutting ejector pin; 16. Drive component; 17. Cylinder; 18. Positioning buckle molding cavity; 19. Lower molding ring; 20. Upper molding ring; 21. Stripe molding protrusion; 22. Stripe molding groove; 23. Insert for driver's footrest panel molding. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1-5As shown, an automatic gate-cutting structure for a TPE car floor mat injection molding die includes a lower mold 1 and an upper mold 2. The lower mold 1 has a molding protrusion 3, which has a positioning buckle molding lower part 4 and a stripe molding lower part 5. The upper mold 2 has a molding cavity 6, which has a positioning buckle molding upper part 7 and a stripe molding upper part 8. The positioning buckle molding lower part 4 and the positioning buckle molding upper part 7 are positioned and matched in shape. The stripe molding lower part 5 and the stripe molding upper part 8 are positioned and matched in shape. A driver's footrest molding insert 9 is provided between the lower mold 1 and the upper mold 2. An injection main board 10 is provided above the upper mold 2. A flow-diverting automatic gate-cutting structure 11 is provided between the injection main board 10 and the upper mold 2.

[0027] In this embodiment, during the injection molding process, the lower mold 1 and the upper mold 2 of the car floor mat are precisely closed. At this time, the molding protrusion 3 is tightly embedded in the molding cavity 6, and the lower part 4 and the upper part 7 of the positioning buckle are precisely aligned, together forming the molding space of the positioning buckle. At the same time, the lower part 5 and the upper part 8 of the stripe molding also cooperate with each other to form a molding space for shaping the stripes on the surface of the floor mat. The driver's footrest molding insert 9 is firmly fixed between the lower mold 1 and the upper mold 2 of the car floor mat, deeply participating in the molding of the corresponding specific parts of the car floor mat. The injection molding main board 10 injects the molten injection material into the above-mentioned molding space through the diversion type automatic sprue structure 11. After the injection molding is completed, the cutting structure of the diversion type automatic sprue structure 11 is moved upward. As the cutting structure continues to push the product upward, As the product and the sprue gradually move relative to each other, the velocity difference generated by this displacement creates a strong shearing force between them. Ultimately, this shearing force precisely separates the sprue from the product, achieving automatic sprue cutting. With precise mold matching, various parts of the car floor mats, including positioning buckles and stripes, can be formed with high precision, effectively ensuring the dimensional accuracy and shape accuracy of the product. The setting of the driver's footrest plate molding insert 9 can meet the special molding requirements of specific parts, greatly improving the functionality and applicability of the product. The diversion-type automatic sprue cutting structure 11 achieves efficient operation of simultaneous ejection and cutting, eliminating the inefficiency and instability of traditional manual sprue cutting. It not only significantly improves production efficiency and reduces labor costs, but also ensures stable and reliable sprue cutting quality, avoiding damage to the product and comprehensively improving product quality.

[0028] Combination Figure 1-5As shown, the flow-diverting automatic sprue cutter structure 11 includes an injection diversion plate 12 disposed between the injection main plate 10 and the upper mold 2 for molding car floor mats. The injection diversion plate 12 has an injection main pipe 13 at its top and a plurality of injection diversion tubes 14 at its bottom. The injection diversion tubes 14 have an internal ejector pin assembly 15 that can reciprocate linearly in the vertical direction.

[0029] Specifically, the injection molding material enters the injection manifold 12 from the injection main pipe 13, and then is evenly distributed to each molding part through the injection manifold 14. The built-in ejector assembly 15 can move up and down within the injection manifold 14, performing ejection and gate cutting operations after injection is completed. The design of the injection manifold 12 and the injection manifold 14 achieves uniform distribution of the injection molding material, ensuring consistent injection quality in all parts. The built-in ejector assembly 15 provides an actuator for automatic gate cutting.

[0030] The built-in ejector assembly 15 includes a cut ejector pin 16 disposed in the injection molding manifold 14, and the cut ejector pin 16 and the injection molding manifold 14 form a discharge channel.

[0031] In this embodiment, during injection molding, the injection material enters the molding space through the discharge channel between the notching ejector pin 16 and the injection manifold 14. During the gate cutting stage, the notching ejector pin 16 moves upward, pushing the product and the gate. This structural design not only ensures the smooth injection of the injection material but also provides the necessary conditions for subsequent gate cutting operations. The movement of the notching ejector pin 16 is directly related to the gate cutting effect.

[0032] Combination Figure 2 , Figure 4 As shown, the injection molding manifold 14 is provided with a driving component 17, which is connected to the cutting ejector pin 16.

[0033] In this embodiment, the driving component 17 provides power to the cutting ejector pin 16, enabling it to move up and down within the injection molding manifold 14. The driving component 17 allows for precise control of the movement of the cutting ejector pin 16, ensuring the accuracy and stability of the cutting nozzle operation.

[0034] The driving component 17 includes a cylinder 18 disposed on the injection molding manifold 14, and the power shaft of the cylinder 18 is connected to the cutting ejector pin 16.

[0035] In this embodiment, when the cylinder 18 is working, its power shaft extends or retracts, driving the cutting pin 16 to reciprocate linearly within the injection molding manifold 14. The cylinder 18, as a driving component, has the advantages of fast response speed and stable power, and can quickly and accurately drive the cutting pin 16 to perform the cutting action, thereby improving production efficiency.

[0036] Combination Figure 3As shown, the lower part 4 of the positioning buckle includes a positioning buckle forming cavity 19 disposed on the forming protrusion 3, and the positioning buckle forming cavity 19 has a forming lower ring 20 inside.

[0037] In this embodiment, during mold closing, the positioning buckle forming cavity 19 cooperates with the positioning buckle forming upper part 7, and the forming lower ring 20 and forming upper ring 21 work together to form the positioning buckle forming space. This structural design can accurately form the shape of the positioning buckle. In particular, the setting of the forming lower ring 20 helps to ensure the structural strength and stability of the positioning buckle.

[0038] The upper part 7 of the positioning buckle includes an upper forming ring 21 disposed in the upper mold 2 for forming car floor mats, and the lower forming ring 20 is disposed opposite to the upper forming ring 21.

[0039] In this embodiment, the upper molding ring 21 and the lower molding ring 20 cooperate with each other to wrap the injection molding material during the injection molding process, forming a ring structure of the positioning buckle. The cooperation between the upper molding ring 21 and the lower molding ring 20 ensures the accuracy and consistency of the positioning buckle molding and improves the quality of the positioning buckle.

[0040] Combination Figure 3 As shown, the striped lower part 5 includes a striped forming protrusion 22 disposed on the forming protrusion 3.

[0041] In this embodiment, the stripe forming protrusion 22 cooperates with the stripe forming groove 23 in the upper stripe forming part 8 to form a stripe structure on the surface of the foot pad during the injection molding process. The setting of the stripe forming protrusion 22 enables the foot pad surface to form anti-slip and beautiful stripes, improving the functionality and appearance quality of the product.

[0042] Combination Figure 5 As shown, the upper part 7 of the positioning buckle includes a striped molding groove 23 disposed in the molding cavity 6, and the striped molding protrusion 22 corresponds to the striped molding groove 23 in position and is matched in shape.

[0043] In this embodiment, when the lower mold 1 and the upper mold 2 of the car floor mat are closed, the stripe forming protrusion 22 is embedded in the stripe forming groove 23, and the injection molding material fills the groove to form stripes. This precise fit ensures the clarity and consistency of the stripe forming and improves the overall quality of the product.

[0044] Combination Figure 2 As shown, the driver's footrest molding insert 9 includes a driver's footrest molding insert 24 disposed between the lower mold 1 and the upper mold 2 of the car floor mat.

[0045] In this embodiment, the driver's footrest molding insert 24 is fixed between the lower mold 1 and the upper mold 2 of the car floor mat during the injection molding process, and participates in the molding of the driver's footrest area. The setting of the driver's footrest molding insert 24 can meet the special structural and functional requirements of this part, and improve the comfort and practicality of the product.

[0046] The working principle of this utility model is as follows:

[0047] In injection molding production, the driver's footrest insert is first placed in the designated position on the lower mold of the car floor mat. Then, the mold is closed so that the lower mold and the upper mold fit tightly together. The positioning buckle molding cavity 19, the lower molding ring 20, and the upper molding ring 21 cooperate, and the striped molding protrusion 22 and the striped molding groove 23 cooperate. The injection material enters the injection manifold through the injection main plate and is then distributed to various molding parts through the injection manifold to complete the injection process. After injection, the cylinder is activated, pushing the sprue ejector pin upward. Due to the inverted structure of the sprue, its ejection speed lags behind the product. Thus, under the push of the sprue ejector pin, the shearing force between the two separates the sprue from the product, realizing automatic sprue cutting. The whole process has a high degree of automation and good sprue cutting effect, effectively improving the production efficiency and product quality of TPE car floor mats.

[0048] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0049] Although this document frequently uses terms such as "lower mold for car floor mats 1," "upper mold for car floor mats 2," "molding protrusion 3," "lower part of positioning buckle molding 4," "lower part of stripe molding 5," "molding cavity 6," "upper part of positioning buckle molding 7," "upper part of stripe molding 8," "driver's footrest plate molding insert 9," "injection main board 10," "automatic sprue cutter structure 11," "injection manifold plate 12," "main injection pipe 13," "injection manifold tube 14," "built-in ejector assembly 15," "cutting ejector pin 16," "drive component 17," "cylinder 18," "positioning buckle molding cavity 19," "lower molding ring 20," "upper molding ring 21," "stripe molding protrusion 22," "stripe molding groove 23," and "driver's footrest plate molding insert 24," the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A TPE automobile foot mat injection molding mold automatic water gap structure, comprising an automobile foot mat forming lower mold (1) and an automobile foot mat forming upper mold (2), characterized in that, The automobile foot mat forming lower die (1) is provided with a forming protrusion (3), the forming protrusion (3) is provided with a positioning buckle forming lower part (4) and a stripe forming lower part (5), the automobile foot mat forming upper die (2) is provided with a forming cavity (6), the forming cavity (6) is provided with a positioning buckle forming upper part (7) and a stripe forming upper part (8), the positioning buckle forming lower part (4) and the positioning buckle forming upper part (7) are corresponding in position and matched in shape, the stripe forming lower part (5) and the stripe forming upper part (8) are corresponding in position and matched in shape, the automobile foot mat forming lower die (1) and the automobile foot mat forming upper die (2) are provided with a main driver foot positioning plate forming insert (9), the automobile foot mat forming upper die (2) is provided with an injection main plate (10), and the injection main plate (10) and the automobile foot mat forming upper die (2) are provided with a shunt type automatic water gap cutting structure (11).

2. The automatic sprue cutting structure of the TPE automobile foot mat injection molding mold according to claim 1, characterized in that, The shunt type automatic water gap cutting structure (11) comprises an injection shunt plate (12) arranged between the injection main plate (10) and the automobile foot mat forming upper die (2), the injection shunt plate (12) is provided with an injection main pipe (13) at the top, and the injection shunt plate (12) is provided with a plurality of injection shunt pipes (14) at the bottom, the injection shunt pipe (14) is provided with an embedded ejector pin assembly (15) capable of reciprocating linearly in the vertical direction.

3. The automatic sprue cutting structure of the TPE automobile foot mat injection molding mold according to claim 2, characterized in that, The embedded ejector pin assembly (15) comprises a cut ejector pin (16) arranged in the injection shunt pipe (14), and the cut ejector pin (16) and the injection shunt pipe (14) form a discharging channel.

4. The automatic sprue cutting structure of the TPE automobile foot mat injection molding mold according to claim 3, characterized in that, The injection shunt pipe (14) is provided with a driving member (17), and the driving member (17) is connected with the cut ejector pin (16).

5. The automatic sprue cutting structure of the TPE automobile foot mat injection molding mold according to claim 4, characterized in that, The driving member (17) comprises a gas cylinder (18) arranged on the injection shunt pipe (14), and the power shaft of the gas cylinder (18) is connected with the cut ejector pin (16).

6. The automatic sprue cutting structure of the TPE automobile foot mat injection molding mold according to claim 5, characterized in that, The positioning buckle forming lower part (4) comprises a positioning buckle forming cavity (19) arranged on the forming protrusion (3), and the positioning buckle forming cavity (19) is provided with a forming lower ring (20).

7. The automatic sprue cutting structure of the TPE automobile foot mat injection molding mold according to claim 6, characterized in that, The positioning buckle forming upper part (7) comprises a forming upper ring (21) arranged in the automobile foot mat forming upper die (2), and the forming lower ring (20) is arranged opposite to the forming upper ring (21).

8. The automatic sprue cutting structure of the TPE automobile foot mat injection molding mold according to claim 7, characterized in that, The stripe forming lower part (5) comprises a stripe forming protrusion (22) arranged on the forming protrusion (3).

9. The automatic sprue cutting structure of the TPE automobile foot mat injection molding mold according to claim 8, characterized in that, The positioning buckle forming upper part (7) comprises a stripe forming groove (23) arranged in the forming cavity (6), and the stripe forming protrusion (22) and the stripe forming groove (23) are corresponding in position and matched in shape.

10. The automatic sprue cutting structure of the TPE automobile foot mat injection molding mold according to claim 9, characterized in that, The main driver foot positioning plate forming insert (9) comprises a main driver foot positioning plate forming panel (24) arranged between the automobile foot mat forming lower die (1) and the automobile foot mat forming upper die (2).

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