Forming and separating structure for rear transverse reinforcing plate

Abstract

The utility model discloses a forming and separating structure for a rear transverse reinforcing plate, and belongs to the technical field of automobile part machining dies. Comprising a first-stage forming structure, a second-stage forming structure and a buffer structure, the first-stage forming structure is arranged on the upper mold frame; the second-stage forming structure is arranged behind the first-stage forming structure; the second-stage forming structure is also arranged on the upper mold frame; the material sheet is subjected to primary stamping and secondary stamping in sequence to form the structural shape of the part; buffering structures are arranged in the first-stage forming structure and the second-stage forming structure and used for buffering the punching forming process of material pieces on the first-stage forming structure and the second-stage forming structure. According to the utility model, the problems of cracking of formed parts and the like possibly caused by sudden increase of the punching force acting on the primary forming die of the material sheet in the punching forming process are solved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts processing mold technology, specifically relating to a molding and separation structure for a rear transverse reinforcing plate. Background Technology

[0002] Stamping technology for automotive parts is one of the core technologies in automobile manufacturing. Almost 90% of the metal parts of a car body are stamped, including the rear transverse reinforcement plate. The replacement of car bodies is much faster than that of chassis and engines. Stamping technology not only affects the manufacturing cycle in automobile product development, but also directly affects cost and product quality. After the sheet metal is initially formed, it is stamped on the forming die by the machine, and is stamped into the part with the required structural shape according to the specific die structure.

[0003] The machine press provides a suitable stamping force to the sheet material. Under the pressure of the machine, the sheet material adheres to the mold and is stamped into a part with a specific structural shape according to the mold's structure. The rear transverse reinforcing plate in this utility model is formed into a fixed shape after being stamped on two-stage molds. During the stamping process, if the stamping force applied to the sheet material by the machine is too large or if the stamping force applied to the sheet material suddenly increases during the stamping process, cracks or slight deformations may occur on the formed part. Utility Model Content

[0004] This utility model provides a forming separation structure for a rear transverse reinforcing plate. The forming separation structure has a buffer structure between the stamping die and the upper die frame it is installed with. When the machine applies a stamping force to the sheet, the buffer structure can buffer both the sheet and the die. This avoids the sudden application of a large stamping force to the sheet, which could cause the sheet to crack under strong force. It also balances the force of the external pressing material with the forming force, preventing the parts from being over-stamped, which could lead to cracking or deformation.

[0005] To achieve the above-mentioned technical objectives, this utility model is implemented through the following technical solution:

[0006] A molding separation structure for a rear transverse reinforcing plate includes: a primary molding structure, a secondary molding structure, and a buffer structure;

[0007] The primary molding structure is mounted on the upper mold frame;

[0008] The secondary forming structure is set after the primary forming structure; the secondary forming structure is also set on the upper mold frame; the sheet material is formed into the structural shape of the part after passing through the primary stamping and the secondary stamping in sequence;

[0009] Both the primary forming structure and the secondary forming structure are equipped with a buffer structure, which is used to buffer the stamping process of the material sheet in the primary forming structure and the secondary forming structure.

[0010] Preferably, the primary forming structure is provided in two sets, and the sheet material needs to be formed by two primary stamping processes.

[0011] Preferably, each set of the primary molding structure consists of two sets of primary molding templates; the two sets of primary molding templates are arranged in a mirror-symmetrical manner on the upper mold frame;

[0012] A buffer structure is provided below each set of primary forming templates.

[0013] Preferably, the secondary forming structure consists of two sets of secondary forming templates disposed on the upper mold frame; the two sets of secondary forming templates are arranged in a mirror-symmetrical manner.

[0014] A connecting bridge is provided above the two sets of secondary forming templates, and the two sets of secondary forming templates are connected by the connecting bridge.

[0015] Preferably, the buffer structure includes: a damping rod and an elastic element;

[0016] The primary and secondary forming templates all have cylindrical grooves inside.

[0017] The opening of the cylindrical groove is formed on the bottom surface of the primary forming template and the secondary forming template;

[0018] The damping rod and the elastic element are disposed in the cylindrical groove; the upper end of the damping rod is connected to the upper top surface of the cylindrical groove, and the lower end of the damping rod is disposed on the upper mold frame.

[0019] An elastic element is provided on the outer periphery of the damping rod. The upper end of the elastic element is connected to the upper top surface of the cylindrical groove, and the lower end of the elastic element is provided on the upper mold frame.

[0020] Preferably, both the primary forming template and the secondary forming template have through holes.

[0021] The through hole penetrates the upper and lower surfaces of the primary forming template and the secondary forming template;

[0022] The lower end of the through hole is connected to the first end of the vent pipe, and the second end of the vent pipe is connected to the air pump.

[0023] Preferably, a cap is provided inside the upper opening of the through hole;

[0024] The cap has several air passages that penetrate it.

[0025] All the vent cap air passages are arc-shaped channel structures.

[0026] Preferably, several sets of patch pressure sensors are evenly distributed on the upper surface of the primary forming template and the secondary forming template; the patch pressure sensors are communicatively connected to the PLC processor.

[0027] The PLC processor is connected to the machine control components via communication.

[0028] Preferably, a set of auxiliary plates is provided on each side of the bottom surface of the primary forming template;

[0029] Screw holes are provided on the attached plate;

[0030] A bolt is installed inside the screw hole;

[0031] The primary forming template is fixed to the upper mold frame using the bolts.

[0032] The beneficial effects of this utility model are:

[0033] This utility model provides a forming and separating structure for a rear transverse reinforcing plate. The structure includes two sets of primary forming structures and one set of secondary forming structures. The primary forming structure consists of two sets of mirror-symmetrical primary forming templates. The secondary forming structure consists of two sets of mirror-symmetrical secondary forming templates. A buffer structure consisting of damping rods and elastic elements is provided in the primary forming templates and the secondary forming templates. When the machine presses and forms the sheet on the forming templates and the secondary forming templates, the buffer structure can prevent the sheet from bursting due to a sudden increase in pressure. The buffer structure can also balance the external pressure force and the forming force to prevent the sheet from being over-pressed.

[0034] The primary forming template and the secondary forming template have through holes. A vent pipe is connected to the lower opening of the through hole, and the vent pipe is connected to an air pump. After the sheet is stamped and formed, the air pump sprays air from the upper opening of the through hole through the vent pipe. The sprayed air acts on the formed part. Under the impact of the air, the formed part can be separated from the template, making it easy to demold.

[0035] A cap is installed inside the upper opening of the through hole, and several arc-shaped air passages are opened inside the cap. The air passages divide the entire airflow channel inside the through hole into several smaller airflow channels. The airflow is divided into several parts by several cap channels, which can avoid excessive impact force of the demolding airflow, which may cause impact on the surface of some thermoplastic parts that have not yet fully set.

[0036] A patch pressure sensor is installed on the upper surface of the primary and secondary forming templates, and the patch pressure sensor is flush with the surface of the primary and secondary forming templates. According to the material of the sheet, an appropriate stamping pressure threshold is set. During the stamping process, the patch pressure sensor monitors the stamping pressure of the machine in real time. When the set threshold is reached, the PLC processor controls the machine to stop increasing the stamping pressure and maintain a constant value to complete the stamping. This can avoid improper stamping pressure of the sheet, which may cause the parts to not meet the standards. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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.

[0038] Figure 1 This is a schematic diagram of the overall structure of the primary and secondary molding structures on the template.

[0039] Figure 2 These are schematic diagrams of two sets of primary molding structures;

[0040] Figure 3 This is a schematic diagram of a two-stage molding structure;

[0041] Figure 4 This is a schematic diagram of the overall structure of the primary molding template;

[0042] Figure 5 This is a front view of the primary molding template;

[0043] Figure 6 This is a side view of the primary molding template;

[0044] Figure 7 This is a schematic diagram of the air passage structure inside the vent cap;

[0045] Figure 8 This is a top view of the two-stage molding structure.

[0046] Figure 9 This is a front view of the two-stage molding structure.

[0047] In the attached diagram, the structural names represented by each number are as follows:

[0048] 1-Primary forming template, 101-Attachment plate, 102-Screw hole, 103-Bolt, 2-Through hole, 201-Ventilation pipe, 202-Hole cap, 2021-Hole cap air passage, 3-Damping rod, 4-Elastic element, 5-Secondary forming template, 501-Connecting bridge, 6-Patch pressure sensor, 7-Upper mold frame, 8-Primary forming structure, 9-Secondary forming structure. Detailed Implementation

[0049] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0050] Example 1

[0051] A molding separation structure for a rear transverse reinforcing plate includes: a primary molding structure 8, a secondary molding structure 9, and a buffer structure.

[0052] like Figure 1 As shown, the primary forming structure 8 and the secondary forming structure 9 are set on the processing template, specifically on the upper mold frame 7; the sheet material can finally achieve the structure of the rear transverse reinforcing plate after two stages of stamping; the primary forming structure 8 is set in two sets, and the sheet material needs to go through two primary forming stampings before entering the secondary forming stage, and finally form the structural shape of the rear transverse reinforcing plate after being stamped by the secondary forming structure 9.

[0053] like Figure 2 As shown, each set of primary molding structure 8 consists of two sets of primary molding templates 1, which are arranged in a mirror symmetrical manner. The upper surface of the primary molding template 1 changes from the opposite side to the non-opposite side by first passing through a short parallel transition, then descending obliquely downwards, and finally passing through a parallel transition.

[0054] like Figure 1 As shown, a set of "L"-shaped auxiliary plates 101 are set on both sides of the bottom surface of the first-stage forming template 1. Screw holes 102 are opened on the auxiliary plates 101, and bolts 103 are installed in the screw holes 102. The "L" auxiliary plates 101 on both sides are embedded in the upper mold frame 7. The entire first-stage forming template 1 can be installed and fixed on the upper mold frame 7 by using the bolts 103.

[0055] Each set of secondary forming structures 9 consists of two sets of secondary forming templates 5, which are arranged in a mirror symmetrical manner. A connecting bridge 501 is provided above the two sets of secondary forming templates 5 to connect them. The upper surface of the secondary forming template 5 slopes downward from the opposite side to the non-opposite side and then enters a parallel transition. The lower part of the secondary forming structure 9 is embedded in the upper mold frame 7, and the upper surface of the lower parallel transition part is flush with the upper surface of the upper mold frame 7.

[0056] The sheet material, which has undergone initial stamping but is not yet formed, is pressed down on the primary forming template 1 and the secondary forming template 5 by the machine. Under the action of the stamping force, the sheet material undergoes plastic deformation. The shape and structure of the deformation are determined by the primary forming template 1 and the secondary forming template 5. Under the shaping of the primary forming template 1 and the secondary forming template 5, the sheet material finally forms the structural shape of the rear transverse reinforcing plate.

[0057] During stamping, a sudden increase in the stamping pressure on the sheet material may cause it to crack under the sudden increase in pressure, resulting in scrapped parts. In addition, an imbalance between the external pressure force and the forming force may also lead to over-stamping of the sheet material.

[0058] Therefore, in this embodiment, a buffer structure is provided inside both the primary forming structure 8 and the secondary forming structure 9. The buffer structure is used to form a buffer process against the punching pressure, thereby avoiding the cracking of the stamped parts caused by the sudden increase in punching pressure on the sheet.

[0059] The buffer structure is specifically set in each group of primary forming template 1 and secondary forming template 5; the buffer structure includes: damping rod 3 and elastic element 4.

[0060] like Figure 6 as well as Figure 9 As shown, cylindrical grooves are formed inside both the primary forming template 1 and the secondary forming template 5; the lower openings of the cylindrical grooves are located on the bottom surfaces of the primary forming template 1 and the secondary forming template 5; a buffer structure is set inside the cylindrical groove, wherein the upper end of the damping rod 3 is connected to the upper top surface of the cylindrical groove, and the lower end of the damping rod 3 is set on the lower mold frame 7; an elastic element 4 is sleeved around the outer periphery of the damping rod 3, and in this embodiment, the elastic element 4 is a spring; the upper end of the spring is connected to the upper top surface of the cylindrical groove, and the lower end of the spring is set on the upper mold frame 7; the installation and fixation between the primary forming template 1 and the secondary forming template 5 and the upper mold frame 7 maintains a certain degree of vertical movement; when the machine presses the primary forming template 1 and the secondary forming template 5, the buffer structure formed by the damping rod 3 and the spring forms a certain buffer space during the process of the stamping force being formed and then rapidly increasing, and then maintains a stable stamping force for stamping; ensuring that the sheet is stamped and formed smoothly and avoiding easy cracking.

[0061] Example 2

[0062] Based on Example 1, after the sheet is stamped, it is completely and tightly fitted with the primary forming template 1 or the secondary forming template 5. The tighter the fit, the better the stamping and the standard forming. However, if the formed part is too tightly fitted with the primary forming template 1 or the secondary forming template 5, it will be difficult to demold. This is especially true for some non-metallic materials, which may require the use of hot stamping. During the stamping process, the sheet temperature rises, and under higher stamping force, the fit between the sheet and the primary forming template 1 or the secondary forming template 5 becomes even tighter, making demolding more difficult.

[0063] like Figure 6 and Figure 9 As shown, both the primary forming template 1 and the secondary forming template 5 have through holes 2. The through holes 2 penetrate the upper and lower surfaces of the primary forming template 1 and the secondary forming template 5. A vent pipe 201 is installed at the lower opening of the through hole 2. The first end of the vent pipe 201 is connected to the lower opening of the through hole 2, and the second end of the vent pipe 201 is connected to an air pump. After the sheet is stamped on the primary forming template 1 or the secondary forming template 5, the air pump generates airflow. The airflow passes through the vent pipe 201 and the through hole 2, and finally sprays out from the upper opening of the through hole 2, forming a gas spray effect. Since the formed part is in close contact with the primary forming template 1 or the secondary forming template 5, the gas spray formed at the upper opening of the through hole 2 will act on the formed part. Under the impact of the gas spray, a gap is formed between the auxiliary formed part and the primary forming template 1 or the secondary forming template 2, so that the formed part can be easily demolded.

[0064] Example 3

[0065] Based on Example 2, in Example 2, an air pump generates an air jet at the upper opening of the through hole 2 of the primary forming template 1 and the secondary forming template 5, connected to the air pipe 201. The air jet breaks the tightness of the fit between the forming part and the primary forming template 1 or the secondary forming template 5, thus achieving easy demolding. The function of the air jet is not to directly impact the forming part, but to create gaps between the forming part and the primary forming template 1 or the secondary forming template 5 under the action of the air jet. As the airflow fills the gaps, the gaps widen, thus achieving the purpose of separating the forming part from the forming template. If the airflow generated by the air pump is completely ejected from the upper opening of the through hole 2, it may cause the airflow impact force to be too large. For the stamping of some non-metallic materials, thermoplastic processes may be used in conjunction with the stamping process to facilitate material forming. After stamping, the surface of the forming part still has temperature, that is, it may not be fully set. If the air jet impact force is too large, it may cause bulging deformation on the surface of the forming part.

[0066] Therefore, a hole cap 202 is provided at the upper opening of the through hole 2 in the primary forming template 1 and the secondary forming template 5. The hole cap 202 is used to disperse the air jet flow, which not only ensures that the air flow can form a gap between the forming part and the forming template, and the gap gradually increases as the air flow enters, but also disperses the entire air flow, thereby appropriately reducing the impact force of the air jet.

[0067] like Figure 7 As shown, several air passages 2021 are opened inside the cap 202, penetrating the upper and lower surfaces of the cap 202; the air passages 2021 are all channel structures with a certain curvature; in this way, the airflow generated by the air pump is dispersed and sprayed onto the mating surface of the molding part and the molding template through several air passages 2021; thus achieving the purpose of assisting in the separation of the molding part and the molding template.

[0068] Example 4

[0069] Based on Example 1, different materials have different mechanical strengths, so the stamping force required during stamping is also different; different materials can only achieve the standard shaping effect and reach the required structural shape under the optimal stamping force to ensure that the usage requirements are met.

[0070] like Figure 4 and Figure 8 As shown, in this embodiment, several sets of patch pressure sensors 6 are set at dispersed points on the upper surface of each set of primary forming template 1 and secondary forming template 5; the patch pressure sensors 6 are communicatively connected to the PLC processor, and the PLC processor is communicatively connected to the machine tool's control component, which controls the stamping force of the machine tool; the machine tool and its control component are existing technologies that can be mastered by those skilled in the art, and they are applied to existing template machine tools for stamping automotive parts. This embodiment does not improve the machine tool and control component, so its detailed structure will not be described further.

[0071] Based on the material properties of the sheet, the stamping pressure threshold range is set via input to the PLC processor. When the machine presses the sheet on the forming template, the patch pressure sensor 6 monitors the stamping force applied by the machine in real time. If the stamping force is within the set threshold range, the current stamping force is maintained to complete the stamping process. If the stamping force is too large or too small, the machine control may malfunction, and the PLC processor system will prompt for machine maintenance. By monitoring the stamping pressure during the stamping process, the stamping force during forming can be determined, and timely correction can be made when the stamping pressure error is large.

[0072] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0073] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A molding separation structure for a rear transverse reinforcing plate, characterized in that, include: Primary molding structure, secondary molding structure, and cushioning structure; The primary molding structure is mounted on the upper mold frame; The secondary forming structure is set after the primary forming structure; the secondary forming structure is also set on the upper mold frame; the sheet material is formed into the structural shape of the part after passing through the primary stamping and the secondary stamping in sequence; Both the primary forming structure and the secondary forming structure are equipped with a buffer structure, which is used to buffer the stamping process of the material sheet in the primary forming structure and the secondary forming structure.

2. The molding separation structure for a rear transverse reinforcing plate according to claim 1, characterized in that, The primary molding structure is provided in two sets.

3. The molding and separation structure for a rear transverse reinforcing plate according to claim 2, characterized in that, Each set of the primary molding structure consists of two sets of primary molding templates; the two sets of primary molding templates are arranged in a mirror-symmetrical manner on the upper mold frame; A buffer structure is provided below each set of the primary molding templates; The secondary forming structure consists of two sets of secondary forming templates mounted on the upper mold frame; the two sets of secondary forming templates are arranged in a mirror-symmetrical manner. A connecting bridge is provided above the two sets of secondary forming templates, and the two sets of secondary forming templates are connected by the connecting bridge.

4. The molding separation structure for a rear transverse reinforcing plate according to claim 3, characterized in that, The buffer structure includes: a damping rod and an elastic element; Both the primary forming template and the secondary forming template have cylindrical grooves inside. The opening of the cylindrical groove is formed on the bottom surface of the primary forming template and the secondary forming template; The damping rod and the elastic element are disposed in the cylindrical groove; the upper end of the damping rod is connected to the upper top surface of the cylindrical groove, and the lower end of the damping rod is disposed on the upper mold frame. An elastic element is provided on the outer periphery of the damping rod. The upper end of the elastic element is connected to the upper top surface of the cylindrical groove, and the lower end of the elastic element is provided on the upper mold frame.

5. The molding separation structure for a rear transverse reinforcing plate according to claim 3, characterized in that, Both the primary forming template and the secondary forming template have through holes. The through hole penetrates the upper and lower surfaces of the primary forming template and the secondary forming template; The lower end of the through hole is connected to the first end of the vent pipe, and the second end of the vent pipe is connected to the air pump.

6. The molding separation structure for a rear transverse reinforcing plate according to claim 5, characterized in that, A cap is provided inside the upper opening of the through hole; The cap has several air passages that penetrate it. All the vent cap air passages are arc-shaped channel structures.

7. The molding separation structure for a rear transverse reinforcing plate according to claim 3, characterized in that, Several sets of patch pressure sensors are evenly distributed on the upper surface of the primary forming template and the secondary forming template; the patch pressure sensors are communicatively connected to the PLC processor. The PLC processor is connected to the machine control components via communication.

8. The molding separation structure for a rear transverse reinforcing plate according to claim 3, characterized in that, A set of auxiliary plates is provided on each side of the bottom surface of the primary forming template; Screw holes are provided on the attached plate; A bolt is installed inside the screw hole; The primary forming template is fixed to the upper mold frame using the bolts.

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