An upper three and lower three helical tooth structure of an automobile sunroof

Abstract

The utility model discloses a kind of upper three lower three helical tooth structures of automobile sunroof, it is related to automobile parts manufacturing technical field, including mould assembly, the mould assembly, including: upper three mechanism, lower three mechanism, middle die and core rod, wherein;The upper three mechanism, including upper one punch, upper two punch and upper three punch;The lower three mechanism, including lower one punch, lower two punch and lower three punch;Wherein, the lower two punch is fixed punch, the lower one punch and the lower two punch are equipped with helical mechanism, for realizing helical tooth forming.Achieved effect: using upper three lower three mould structure design, cooperate helical mechanism and the mechanical press of adaptation, form a complete set of automobile sunroof helical tooth forming technical scheme, the structure realizes the movability of powder in pressing process, effectively solve the local density loose problem caused by powder unable to move in traditional upper two lower three mould, thoroughly avoid the phenomenon such as powder drop, crack, significantly improve the structural stability and service life of product.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically to a three-upper-three-lower helical tooth structure for an automotive sunroof. Background Technology

[0002] As a core transmission component of the sunroof opening and closing system, the helical gear of an automotive sunroof directly affects the sunroof's operational stability and service life due to its structural characteristics and molding quality. This type of part has a thin-walled, deep-hole structure, requiring extremely high molding precision and density uniformity during manufacturing. In traditional production, the molding dies for this type of part generally employ a two-on-three-on-top design, with two punches on the upper die side and three punches on the lower die side.

[0003] However, this two-on-top, three-on-bottom mold structure has significant drawbacks in practical applications. Because the accompanying molding press cannot control powder movement during the pressing process, the powder distribution within the mold cavity is difficult to control evenly, easily leading to insufficient powder filling in localized areas, resulting in excessively low density in certain parts of the product. This density defect directly causes a series of quality problems, such as powder shedding from the surface of parts and even cracks in stress areas. This not only affects the product's appearance but also severely weakens the structural strength and lifespan of the parts, ultimately leading to frequent customer complaints and hindering the product's market competitiveness.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, the purpose of this utility model is to propose a three-helical-tooth structure for automobile sunroofs to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A three-upper-three-lower helical gear structure for an automotive sunroof includes a mold assembly, the mold assembly comprising: an upper three-mechanism, a lower three-mechanism, a middle mold, and a mandrel, wherein;

[0008] The three mechanisms mentioned above include the first strike, the second strike, and the third strike.

[0009] The lower three mechanisms include the first strike, the second strike, and the third strike;

[0010] The lower two punches are fixed punches, and the lower one punch and the lower two punches are equipped with a spiral mechanism to achieve spiral tooth forming; the upper one punch, the upper two punches and the upper three punches are arranged sequentially from top to bottom along the axial direction and are all located above the middle die; the lower one punch, the lower two punches and the lower three punches are arranged sequentially from bottom to top along the axial direction and are all located below the middle die.

[0011] Furthermore, the mandrel and the middle mold remain level at the initial filling position, and the mandrel is linked with the upper three mechanisms, which can drive the mandrel to move axially; the mandrel is located at the center of the middle mold, and the lower end of the upper three punches is connected to the upper end of the mandrel.

[0012] Furthermore, the middle mold, the next punch, and the lower three punches rise synchronously to the filling position, and the lower three punches move downward synchronously with the downward pressing action of the upper three punches to realize powder movement; the middle mold is sleeved outside the next punch and the lower three punches, and the next punch and the lower three punches can move up and down inside the middle mold.

[0013] Furthermore, the three upper mechanisms can move independently along the axial direction, and can press down synchronously during the pressing process to press the powder in stages.

[0014] Furthermore, the next punch can be rotated and moved downward under pressure during pressing, and the previous punch, the second punch, the third punch and the third punch can rotate synchronously with the pressing process and move to the pressing position.

[0015] Furthermore, the spiral mechanism includes a spiral groove and a spiral protrusion. The spiral groove is disposed on the inner circumferential surface of the next punch, and the spiral protrusion is disposed on the outer circumferential surface of the next punch. The spiral groove and the spiral protrusion are adapted to each other.

[0016] The beneficial effects of this utility model are:

[0017] This invention, employing a three-upper-three-lower mold structure design, combined with a spiral mechanism and a suitable mechanical press, forms a complete technical solution for forming spiral teeth on automotive sunroofs. This structure enables powder mobility during the pressing process, effectively solving the problem of localized density issues caused by the inability of powder to move in traditional two-upper-three-lower molds. It completely avoids defects such as powder shedding and cracking, significantly improving the structural stability and service life of the product. Customer bench tests and small-batch production have verified that product reliability is fully guaranteed, helping to reduce customer complaints and enhance market competitiveness. Furthermore, this three-upper-three-lower structure does not rely on expensive CNC presses; production can be achieved simply by adapting the mold frame to a conventional mechanical press, significantly reducing equipment investment costs and saving production costs for enterprises, while also bringing good economic benefits.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the three upper and three lower helical teeth of the car sunroof according to an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of the three upper and three lower helical teeth structure of an automobile sunroof according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the spiral protrusions of the three upper and three lower spiral teeth structure of the car sunroof according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the spiral groove of the three upper and three lower spiral teeth structure of the car sunroof according to an embodiment of the present utility model.

[0025] In the picture:

[0026] 1. Upper punch; 2. Upper second punch; 3. Upper third punch; 4. Lower punch; 5. Lower second punch; 6. Lower third punch; 7. Middle mold; 8. Core rod; 9. Spiral groove; 10. Spiral protrusion. Detailed Implementation

[0027] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0028] According to an embodiment of the present invention, a three-helix-tooth structure for an automotive sunroof is provided.

[0029] like Figures 1-4 As shown, a three-upper-three-lower helical gear structure for an automotive sunroof includes a mold assembly, which comprises: an upper three-mechanism, a lower three-mechanism, a middle mold 7, and a mandrel 8, wherein;

[0030] The three mechanisms include the first strike 1, the second strike 2, and the third strike 3;

[0031] The next three mechanisms include the first strike 4, the second strike 5, and the third strike 6;

[0032] Among them, the lower second punch 5 is a fixed punch, and the lower first punch 4 and the lower second punch 5 are equipped with a spiral mechanism to realize spiral tooth forming; the upper first punch 1, the upper second punch 2, and the upper third punch 3 are arranged in sequence from top to bottom along the axial direction and are all located above the middle die 7; the lower first punch 4, the lower second punch 5, and the lower third punch 6 are arranged in sequence from bottom to top along the axial direction and are all located below the middle die 7.

[0033] Among them, the mandrel 8 and the middle mold 7 are kept flat at the initial filling position, and the mandrel 8 is linked with the upper three mechanisms, which can drive the mandrel 8 to move along the axis; the mandrel 8 is set at the center of the middle mold 7, and the lower end of the upper three punches 3 is connected to the upper end of the mandrel 8.

[0034] Among them, the middle mold 7, the lower punch 4 and the lower three punch 6 rise synchronously to the filling position, and the lower three punch 6 moves down synchronously with the downward action of the upper three punch 3 to realize the movement of powder; the middle mold 7 is sleeved outside the lower punch 4 and the lower three punch 6, and the lower punch 4 and the lower three punch 6 can move up and down inside the middle mold 7.

[0035] Among them, the three upper mechanisms can move independently along the axial direction, and the three upper mechanisms can press down synchronously during the pressing process to press the powder in steps.

[0036] Among them, the next punch 4 can rotate and move downward under pressure during the pressing process, while the first punch 1, the second punch 2, the third punch 3 and the third punch 6 can rotate synchronously with the pressing process and move to the pressing position.

[0037] The spiral mechanism includes a spiral groove 9 and a spiral protrusion 10. The spiral groove 9 is disposed on the inner circumferential surface of the lower punch 4, and the spiral protrusion 10 is disposed on the outer circumferential surface of the lower punch 5. The spiral groove 9 and the spiral protrusion 10 are adapted to each other.

[0038] Specifically, in application, it also includes: pressing equipment, which is a 100T mechanical press equipped with a customized three-upper-three-lower structure mold frame to adapt to the movement requirements of the mold components.

[0039] The specific working principle of the above scheme is as follows:

[0040] Filling stage: The middle mold 7, the next punch 4 and the third punch 6 rise to the filling position, the second punch 5 remains fixed, and the mandrel 8 is flush with the upper surface of the middle mold 7, thus completing the powder filling.

[0041] Powder movement stage: After the upper three-stroke 3 rises a certain distance, it is pressed down, which drives the core rod 8 to move down. The lower three-stroke 6 moves down at the same time, so that the powder flows evenly in the mold and avoids local accumulation.

[0042] Pressing stage: Upper punch 1, upper punch 2, and upper punch 3 press down together, while lower punch 4 rotates and moves down under force. The working together of each punch presses the powder into shape, ensuring uniform product density. Among them, lower punch 4 and lower punch 5 are equipped with a spiral mechanism to achieve spiral tooth forming.

[0043] Demolding stage: The upper third punch 3 rises and exits the middle mold 7. The middle mold 7, the next punch 4, the lower third punch 6 and the mandrel 8 move down simultaneously. The lower second punch 5, i.e. the fixed punch, pushes the product out of the middle mold 7, completing the demolding.

[0044] In summary, by utilizing the above-described technical solution of this utility model, the following effects can be achieved:

[0045] This invention, employing a three-upper-three-lower mold structure design, combined with a spiral mechanism and a suitable mechanical press, forms a complete spiral tooth forming technology solution for automotive sunroofs. This structure enables powder mobility during the pressing process, effectively solving the problem of localized density loosening caused by the inability to move powder in traditional two-upper-three-lower molds. It completely avoids defects such as powder shedding and cracking, significantly improving the structural stability and service life of the product. Customer bench tests and small-batch production have verified that product reliability is fully guaranteed, helping to reduce customer complaints and enhance market competitiveness. Furthermore, this three-upper-three-lower structure eliminates the need for expensive CNC presses; production can be achieved simply by adapting the mold frame to a conventional mechanical press, significantly reducing equipment investment costs and saving production costs for enterprises, while also bringing good economic benefits.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automotive sunroof with upper three and lower three helical teeth structure, characterized in that, The mold assembly includes: an upper three-part mechanism, a lower three-part mechanism, a middle mold (7), and a mandrel (8), wherein; The three mechanisms mentioned above include the first strike (1), the second strike (2), and the third strike (3). The lower three mechanisms include the first strike (4), the second strike (5), and the third strike (6). Among them, the lower second punch (5) is a fixed punch, and the lower first punch (4) and the lower second punch (5) are provided with a spiral mechanism to realize spiral tooth forming; the upper first punch (1), the upper second punch (2), and the upper third punch (3) are arranged in sequence from top to bottom along the axial direction and are all located above the middle mold (7); the lower first punch (4), the lower second punch (5), and the lower third punch (6) are arranged in sequence from bottom to top along the axial direction and are all located below the middle mold (7).

2. The upper three and lower three helical tooth structure of an automobile sunroof according to claim 1, characterized in that, The mandrel (8) and the middle mold (7) remain level at the initial filling position, and the mandrel (8) is linked with the upper three mechanisms. The upper three mechanisms can drive the mandrel (8) to move along the axial direction. The mandrel (8) is located at the center of the middle mold (7), and the lower end of the upper three punches (3) is connected to the upper end of the mandrel (8).

3. The sunroof according to claim 1, wherein, The middle mold (7), the next punch (4) and the lower three punches (6) rise synchronously to the filling position, and the lower three punches (6) move down synchronously with the downward action of the upper three punches (3) to realize the movement of powder; the middle mold (7) is sleeved on the outside of the next punch (4) and the lower three punches (6), and the next punch (4) and the lower three punches (6) can move up and down inside the middle mold (7).

4. The three-helix-tooth structure for an automotive sunroof according to claim 1, characterized in that, The three mechanisms can move independently along the axial direction, and can press down synchronously during the pressing process to press the powder in stages.

5. The three-helix-tooth structure for an automotive sunroof according to claim 1, characterized in that, The next punch (4) can be rotated and moved downward under pressure during pressing. The first punch (1), the second punch (2), the third punch (3) and the third punch (6) can rotate synchronously and move to the pressing position during the pressing process.

6. The three-helix-tooth structure for an automotive sunroof according to claim 5, characterized in that, The spiral mechanism includes a spiral groove (9) and a spiral protrusion (10). The spiral groove (9) is disposed on the inner circumferential surface of the next punch (4), and the spiral protrusion (10) is disposed on the outer circumferential surface of the next punch (5). The spiral groove (9) and the spiral protrusion (10) are adapted to each other.

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