A die forming equipment for producing a chassis foot pad and a forming method thereof

Abstract

The application discloses a mould pressing forming equipment for machine case foot pad production and a forming method thereof, and relates to the technical field of mould pressing forming equipment. The equipment comprises a forming machine table and a rotating mechanism, a plurality of groups of lower die mechanisms are arranged on the rotating mechanism, a die closing mechanism and an upper die body are arranged, the upper die body is installed on the die closing mechanism, the upper die body is matched with the plurality of groups of lower die mechanisms, an electric heating pipe is arranged in the upper die body and the lower die mechanism, a feeding mechanism is symmetrically arranged at both ends of the rotating mechanism, an auxiliary mechanism is arranged in the middle part of the forming machine table, the auxiliary mechanism comprises a second vacuum suction head, the forming method comprises feeding, limiting, mould pressing vulcanization and demolding, a plurality of groups of lower die mechanisms are driven to rotate by the rotating mechanism, are correspondingly matched with the upper die body, a multi-die group system is constructed, and the forming efficiency of products is improved.

Description

Technical Field

[0001] This invention relates to the field of compression molding equipment technology, specifically to a compression molding equipment and molding method for producing chassis feet. Background Technology

[0002] As a key support component for electronic devices, chassis feet must possess shock absorption, anti-slip, and impact resistance properties. With the increasing lightweighting of electronic devices and the diversification of usage scenarios, existing chassis feet are mostly made of high-performance polymer materials such as silicone and thermoplastic elastomers through molding.

[0003] Furthermore, in recent years, trapezoidal design has become mainstream (e.g. Figure 12 As shown), its wide bottom contact surface can disperse pressure, and the sloping structure enhances anti-slip capability through mechanical load distribution. Although compression molding is a mature process for producing elastomer foot pads, when adapting to trapezoidal structures, if a regular blank pre-made from mixed rubber is directly placed into the trapezoidal cavity, the geometric difference will cause gaps between the blank and the cavity. After compression molding, although the material will flow along the trapezoidal sloping surface under high pressure to try to fill the gaps, the uneven initial distribution of the rectangular / circular blanks can easily cause material shortages at the flow end (especially at the corners), forming bubbles or unfilled defects.

[0004] To address this issue, existing processes typically employ either modifying the shape of the precast blank to fit the trapezoidal cavity or using sheet blank stacking. The sheet blank stacking process involves pre-cutting the compounded rubber into circular blank sheets 100, reducing their thickness, and then stacking multiple sets of circular blank sheets 100 with different diameters to fit the trapezoidal cavity. This reduces gaps between the blank and the cavity, thus lowering the likelihood of air bubbles or unfilled defects after molding. However, existing equipment faces the following problems when adapting to this process: Compression molding requires high temperature (120–180℃) and high pressure (10–20MPa) for vulcanization (3–5 minutes). Traditional equipment uses a single-mold system (single set of upper and lower molds), where the mold is locked during vulcanization, preventing parallel execution of loading and demolding processes. This results in high equipment idle time and consequently, higher production costs. Summary of the Invention

[0005] The purpose of this invention is to provide a molding equipment and molding method for producing chassis feet, which solves the problem of high equipment idle rate and thus high production cost in the vulcanization stage of traditional single-mold systems.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A molding equipment for producing chassis feet includes:

[0008] Molding machine;

[0009] A rotary mechanism is installed in the middle of the forming machine base, and multiple sets of lower mold mechanisms are provided on the rotary mechanism;

[0010] The mold closing mechanism and the upper mold body are provided. The mold closing mechanism is located on one side of the molding machine platform, and the upper mold body is mounted on the mold closing mechanism. The upper mold body is adapted to multiple sets of the lower mold mechanisms.

[0011] An electric heating element is disposed in the upper mold body and the lower mold mechanism;

[0012] The feeding mechanism is symmetrically arranged at both ends of the rotary mechanism;

[0013] An auxiliary mechanism is located in the middle of the molding machine; the auxiliary mechanism includes a second vacuum suction head.

[0014] The second vacuum suction head of the auxiliary mechanism limits the blank in the lower mold mechanism and demolds the molded product.

[0015] As a further embodiment of the present invention: the mold closing mechanism includes two sets of columns, the tops of the two sets of columns are connected to a top plate, a hydraulic cylinder is provided in the middle of the top plate, a sliding base is slidably provided on the two sets of columns, the telescopic rod of the hydraulic cylinder is connected to the sliding base, and the upper mold body is installed on the sliding base.

[0016] As a further aspect of the present invention: the feeding mechanism includes a support base, a rotary cylinder is mounted on the support base, a rotary arm is connected to the rotary cylinder, a first cylinder is mounted on the rotary arm, the telescopic rod of the first cylinder is connected to a material gripping base plate, and a plurality of first vacuum suction heads are provided on the material gripping base plate.

[0017] The feeding mechanism is provided in two sets, which work in conjunction with multiple sets of lower mold mechanisms installed on the rotary mechanism to perform continuous processing.

[0018] As a further aspect of the present invention: the auxiliary mechanism includes a fixed cylinder mounted on the molding machine platform, a rotary motor is provided inside the fixed cylinder, the output shaft of the rotary motor is connected to a rotating shaft, a rotating rod is connected to the top of the rotating shaft, a second cylinder is mounted on the other end of the rotating rod, a connecting frame is connected to the telescopic rod of the second cylinder, and multiple sets of the second vacuum suction head are provided, and multiple sets of the second vacuum suction head are mounted on the connecting frame.

[0019] As a further aspect of the present invention: the lower mold mechanism includes a lower mold mounting platform, a lower mold body is mounted on the lower mold mounting platform, and multiple sets of trapezoidal cavities are formed inside the lower mold body;

[0020] The number of trapezoidal cavities is the same as the number of second vacuum heads, and their positions correspond when the blank is confined;

[0021] The lower mold body is equipped with an ejector assembly, and the rotary panel is equipped with an ejector cylinder. The ejector cylinder drives the ejector assembly to eject and demold.

[0022] As a further embodiment of the present invention: the ejection assembly includes a first top plate, a top cylinder is installed in the middle of the first top plate, an ejector pin is inserted inside the top cylinder, the bottom of the ejector pin is disposed through a fixing plate, a second top plate is connected to both sides of the ejector pin, an ejection groove is opened on both sides of the top cylinder, and the second top plate is slidably disposed in the ejection groove.

[0023] As a further embodiment of the present invention: the bottom of the lower mold body is provided with an ejection mating groove one and an ejection mating groove two, the ejection mating groove one and the ejection mating groove two being provided corresponding to the positions of each of the trapezoidal cavities;

[0024] The lower mold body has an ejector hole corresponding to the position of the trapezoidal cavity; the ejector cylinder is slidably inserted into the ejector hole, and the outer diameter of the ejector cylinder is adapted to the inner diameter of the ejector hole.

[0025] The outer diameter of the ejector pin is adapted to the inner diameter of the ejector cylinder, and the top surface of the ejector cylinder and the top surface of the ejector pin cooperate to form the forming surface of the bottom of the trapezoidal cavity.

[0026] As a further embodiment of the present invention: the two top surfaces of the ejection mating groove are symmetrically provided with mounting grooves, and a return spring is provided in the mounting groove; the other end of the two sets of return springs is connected to the second top plate.

[0027] The bottom of the ejector pin penetrates the fixing plate, and the bottom surface of the ejector pin abuts against the top surface of the lower mold mounting platform; the ejector pin is limited by the lower mold mounting platform and the return spring;

[0028] The first top plate has symmetrical linkage seats at both ends, and the second top plate is set in the corresponding linkage groove, with the top surface of the second top plate fitting against the top surface of the linkage groove.

[0029] As a further aspect of the present invention: the inner wall of the top cylinder is provided with an air groove, and the air groove and the outer axial surface of the ejector pin form an air cavity;

[0030] The ejector pin has an internal ventilation channel, and the top axial surface of the ejector pin has multiple sets of air holes, which are connected to the air cavity.

[0031] An air passage is provided inside the lower mold mounting platform. A connecting pipe is provided for the air passage corresponding to the position of the trapezoidal cavity. One end of the connecting pipe is connected to the air passage, and the other end of the connecting pipe is inserted into the air passage inside the ejector pin.

[0032] As a further aspect of the present invention: a molding method for producing chassis feet, using the above-mentioned molding equipment, characterized by comprising the following steps:

[0033] Step A: Feeding. The feeding mechanism places the adsorbed blank sheet into the corresponding trapezoidal cavity. Repeat the above operation to stack multiple sets of blank sheets of different diameters in the trapezoidal cavity in sequence.

[0034] Step B, Limiting: When the feeding is completed, the second vacuum suction head of the auxiliary mechanism presses against the uppermost blank sheet. Then the rotary mechanism and the auxiliary mechanism rotate synchronously, rotating the lower mold mechanism that places the blank sheet to directly below the upper mold body. After that, the second vacuum suction head moves to above another set of lower mold mechanisms.

[0035] Step C, Compression vulcanization: The upper mold body and the lower mold mechanism are heated by electric heating tubes. When the set temperature is reached, the mold closing mechanism drives the upper mold body to move down and close with the lower mold mechanism.

[0036] Step D, demolding: During the mold closing process between the upper mold body and a set of lower mold mechanisms, the second vacuum suction head, which has moved above another set of lower mold mechanisms, moves down to a set position and sucks up the formed foot pad. The ejector cylinder drives the first top plate to move up, and the first top plate drives the ejector cylinder to move up, pushing the product. At the same time, the external air pump is started, and air is introduced into the air passage inside the ejector pin through the connecting pipe. The gas is discharged from the air chamber, and the ejector cylinder continues to rise. The first top plate squeezes the second top plate, which in turn drives the ejector pin to eject a second time, so that the product is demolded. After demolding, the second vacuum suction head rotates to reset and releases the formed foot pad.

[0037] Step E, the lower mold mechanism after demolding, repeats steps A, B, C and D to form continuous processing.

[0038] The beneficial effects of this invention are:

[0039] This invention utilizes a rotary mechanism to drive multiple sets of lower mold mechanisms to rotate, which are correspondingly adapted to the upper mold body, constructing a multi-module system (one upper mold and multiple lower molds). Thus, while the upper mold body is molding with one set of lower mold mechanisms, another set of lower mold mechanisms can perform other operations such as feeding and demolding, improving product molding efficiency and saving costs. Furthermore, feeding mechanisms on both sides of the molding machine provide corresponding feeding from both sides, mechanized feeding improving feeding speed and accuracy.

[0040] After the material is fed, the present invention uses multiple sets of pressure plates to abut and limit the blank sheet on the lower mold mechanism without applying pressure. The pressure plates are simply made to contact the surface of the uppermost blank sheet. Then, they rotate synchronously to move the lower mold mechanism containing the blank sheet to directly below the upper mold body, thus stabilizing the blank sheet during the deflection process.

[0041] This invention utilizes the extension rod of the ejector cylinder to raise the connecting plate, which in turn raises the first top plate, thereby causing the ejector cylinder to eject once. When the ejector cylinder rises to a set position, the first top plate presses against the second top plate, causing the ejector pin to eject a second time. This second ejection makes the product ejection smoother. Furthermore, the invention connects to an external air pump through an air passage to allow air to enter the ejector pin. The air inside the ejector pin is discharged from the air chamber through the air hole during the delayed ejection gap, cooling the molded pad and causing the product to shrink, facilitating demolding. Additionally, an airflow is formed between the molded surface and the product, further improving the smoothness of demolding. Attached Figure Description

[0042] The invention will now be further described with reference to the accompanying drawings.

[0043] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 This is a schematic diagram of the feeding mechanism of the present invention;

[0045] Figure 3 This is a schematic diagram of the mold closing mechanism of the present invention;

[0046] Figure 4 This is a schematic diagram of the rotary mechanism structure of the present invention;

[0047] Figure 5 yes Figure 1 Enlarged structural diagram of region A in the middle;

[0048] Figure 6 This is a schematic diagram of the cooperation structure between the lower mold mechanism and the upper mold body of the present invention;

[0049] Figure 7 This is a schematic diagram of the transverse cross-sectional structure of the lower mold mechanism of the present invention;

[0050] Figure 8 This is a schematic diagram of the longitudinal cross-sectional structure of the lower mold mechanism of the present invention;

[0051] Figure 9 This is a schematic diagram of the air chamber exhaust state of the present invention;

[0052] Figure 10 This is a schematic diagram of the limiting state of the auxiliary mechanism of the present invention;

[0053] Figure 11 This is a schematic diagram of the operating status of the multi-module system of the present invention;

[0054] Figure 12 This is a schematic diagram of a trapezoidal foot pad structure in the prior art;

[0055] Figure 13 This is a schematic diagram of the lower mold body structure in this invention;

[0056] Figure 14 This is a schematic diagram of the ejector component structure in this invention.

[0057] In the diagram: 1. Molding machine platform; 11. Trapezoidal platform; 12. Molding panel; 2. Rotary mechanism; 21. Rotary platform; 22. Rotary panel; 221. Through hole; 23. Auxiliary roller; 24. Support base; 3. Mold closing mechanism; 31. Column; 32. Top plate; 33. Hydraulic cylinder; 34. Sliding base; 4. Feeding mechanism; 41. Support base; 42. Connecting corner plate; 43. Rotary cylinder; 44. Rotating arm; 45. First cylinder; 46. Material gripping base plate; 47. First vacuum suction head; 5. Auxiliary mechanism; 51. Fixed cylinder; 52. Rotating shaft; 53. Rotating rod; 54. Second cylinder; 55. Connecting frame; 56. Second vacuum suction head; 6. Lower mold mechanism; 61. 611 Lower mold mounting platform; 612 Air passage; 613 Connecting pipe; 624 Lower mold body; 625 Mold closing groove; 626 Trapezoidal cavity; 627 Exhaust overflow groove; 628 Ejection mating groove one; 629 Ejection mating groove two; 620 Ejection hole; 621 Ejection cylinder; 620 Ejection assembly; 641 Linkage seat; 642 First top plate; 643 Ejector cylinder; 644 Fixed plate; 645 Ejector pin; 646 Second top plate; 647 Air hole; 648 Air groove; 649 Connecting plate; 6410 Return spring; 6411 Ejection groove; 7. Upper mold body; 71 Mold closing boss; 8. Electric heating tube; 100. Blank sheet. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] Example 1

[0060] like Figures 1-6As shown, this embodiment provides a molding equipment for producing chassis feet. The equipment includes a molding machine 1 installed on a production line. A trapezoidal platform 11 is provided at the manual operation end of the molding machine 1 to facilitate convenient operation by operators and to accommodate operators of different heights. A molding panel 12 is provided on the top of the molding machine 1 for installing and fixing other molded parts.

[0061] Specifically, such as Figure 1 As shown, a rotary mechanism 2 is installed in the middle of the molded panel 12, and multiple sets of lower mold mechanisms 6 are installed on the rotary mechanism 2. A mold closing mechanism 3 is provided on one side of the back of the molded panel 12, and an upper mold body 7 is installed at the bottom of the mold closing mechanism 3. The upper mold body 7 is adapted to the lower mold mechanism 6 to realize compression molding. Feeding mechanisms 4 are also provided on the left and right sides of the molded panel 12. The two sets of feeding mechanisms 4 are symmetrically arranged about the rotary mechanism 2. An auxiliary mechanism 5 is also provided in the middle of the molded panel 12, and the auxiliary mechanism 5 passes through the rotary mechanism 2.

[0062] By setting up a rotary mechanism 2 to drive multiple sets of lower mold mechanisms 6 to rotate, and correspondingly adapting them to the upper mold body 7, a multi-module system (one upper mold and multiple lower molds) is constructed. Thus, while the upper mold body 7 is molding with one set of lower mold mechanisms 6, another set of lower mold mechanisms 6 can perform other operations such as feeding and demolding, improving product molding efficiency and saving costs. Furthermore, by using feeding mechanisms 4 on both sides to feed materials from both sides of the molding machine 1, mechanized feeding improves feeding speed and accuracy.

[0063] Furthermore, since the process of stacking blank sheets 100 is adopted, during the feeding process, multiple sets (usually two to three sets) of circular blank sheets 100 with different diameters need to be stacked sequentially by the feeding mechanism 4. After the top blank sheet 100 is placed, it is rotated by the rotary mechanism 2 to be directly below the upper mold body 7 for mold closing and molding. During the deflection process, since the blank sheets 100 are stacked sequentially, the top blank sheet 100 is easily subjected to centripetal force during the deflection. It is easy to cause positional displacement during the process of rotating from static to static and from dynamic to static, which affects the product forming. Based on this, this embodiment is provided with an auxiliary mechanism 5 to limit the movement during the deflection process and improve the stability of the entire multi-module system processing.

[0064] Specifically, such as Figure 3 and Figure 4As shown, the rotary mechanism 2 in this embodiment includes a rotary table 21 disposed in the middle of the molding panel 12, a rotary panel 22 mounted on the top of the rotary table 21, and a mounting base disposed on one side of the rotary table 21 and on the molding panel 12. An auxiliary roller 23 is rotatably disposed on the mounting base. The highest surface of the auxiliary roller 23 is in contact with the bottom surface of the rotary panel 22 to realize auxiliary transmission for the rotation of the rotary panel 22. Support seats 24 are symmetrically disposed on both sides of the auxiliary roller 23. A gap is provided between the two support seats 24 and the bottom surface of the rotary panel 22. This gap is set according to the actual design to protect the rotary panel 22 and avoid excessive pressure during mold closing, which could damage the rotary mechanism 2.

[0065] In this embodiment, the rotary table 21 adopts the hollow rotary table of the prior art. The specific structure is the prior art and will not be described in detail here.

[0066] Furthermore, such as Figure 1 and Figure 3 As shown, the mold clamping mechanism 3 in this embodiment includes two sets of columns 31 disposed on the molding panel 12. The top of the two sets of columns 31 is connected to a top plate 32. A hydraulic cylinder 33 is disposed in the middle of the top plate 32. The telescopic rod of the hydraulic cylinder 33 passes through the top plate 32. A sliding base 34 is also slidably disposed on the two sets of columns 31. A connecting seat is disposed in the middle of the top surface of the sliding base 34. The telescopic rod of the hydraulic cylinder 33 is connected to the connecting seat. The sliding base 34 is driven to slide on the two sets of columns 31 by the hydraulic cylinder 33. The upper mold body 7 is fixedly installed in the middle of the bottom surface of the sliding base 34 and is adapted to multiple sets of lower mold mechanisms 6 installed on the rotary panel 22 to perform product compression molding.

[0067] To further improve feeding efficiency, this embodiment uses an automated feeding mechanism 4 for feeding. The pre-processed blank sheet 100 is positioned and conveyed by the existing transmission mechanism, and then the feeding mechanism 4 grabs and feeds it, which not only improves the feeding efficiency, but also improves the feeding accuracy and product quality.

[0068] Among them, the feeding mechanism 4, such as Figure 2As shown, it includes a support base 41 fixed on a support base 41. A connecting corner plate 42 is welded to one side of the top of the support base 41. A rotary cylinder 43 is installed at the bottom of the connecting corner plate 42. The rotating rod of the rotary cylinder 43 passes through the connecting corner plate 42 and is connected to a rotating arm 44. A first cylinder 45 is installed at the top of the other end of the rotating arm 44. The telescopic rod of the first cylinder 45 passes through the rotating arm 44 and is connected to a material gripping base plate 46. A plurality of first vacuum suction heads 47 are correspondingly arranged on the material gripping base plate 46. The blank sheet 100 delivered to the position is adsorbed by the plurality of first vacuum suction heads 47. The blank sheets 100 of different diameters are stacked in sequence by multiple conveying. The adsorption end diameter of the first vacuum suction head 47 is smaller than the diameter of the smallest diameter blank sheet 100 to avoid interference with the cavity during placement.

[0069] Furthermore, such as Figure 10 and Figure 11 As shown, the feeding mechanism 4 in this embodiment is provided in two sets, located on the left and right sides respectively. Together with the multiple sets of lower mold mechanisms 6 installed on the rotary panel 22, it performs continuous processing. In this embodiment, the lower mold mechanism 6 is set in two sets. The rotary mechanism 2 drives the two sets of lower mold mechanisms 6 to rotate back and forth by 90 degrees, so that one set of lower mold mechanisms 6 is performing molding, while the other set is used for feeding and demolding, thereby saving processing time, avoiding idle equipment during molding and vulcanization, and thus saving production costs.

[0070] like Figure 1 and Figure 5 As shown, the auxiliary mechanism 5 in this embodiment is used to limit the stacked blank sheets 100 when switching the lower mold mechanism 6, preventing positional displacement during the deflection process. The auxiliary mechanism 5 includes a fixed cylinder 51 fixedly installed on the forming panel 12, and a through hole 221 is opened in the middle of the rotating panel 22. The fixed cylinder 51 is adapted to the through hole 221. A rotary motor is installed inside the fixed cylinder 51. The output shaft of the rotary motor is connected to a rotating shaft 52. The rotating shaft 52 passes through the top of the fixed cylinder 51 and is connected to a rotating rod 53. A second cylinder 54 is installed at the top of the other end of the rotating rod 53. The extension rod of the second cylinder 54 passes through the rotating rod 53 and is connected to a connecting frame 55. Multiple sets of pressure plates are correspondingly arranged on the connecting frame 55. After the material is loaded, multiple sets of pressure plates abut and limit the blank sheet 100 on the lower mold mechanism 6. No pressure needs to be applied. The pressure plates are simply made to contact the surface of the uppermost blank sheet 100. Then, they are rotated synchronously to move the lower mold mechanism 6, on which the blank sheet 100 is placed, to the area directly below the upper mold body 7, thereby stabilizing the blank sheet 100 during the deflection process.

[0071] Furthermore, such as Figure 6As shown, the lower mold mechanism 6 in this embodiment includes a lower mold mounting platform 61 mounted on the rotary panel 22. A lower mold body 62 is provided on the top of the lower mold mounting platform 61. The lower mold body 62 has multiple sets of trapezoidal cavities 622 inside, which are evenly distributed along the length of the lower mold body 62. A mold closing groove 621 is provided on the top of the lower mold body 62, and a mold closing boss 71 is provided on the bottom surface of the upper mold body 7. The mold closing boss 71 cooperates with the mold closing groove 621 to achieve precise mold closing between the upper mold body 7 and the lower mold body 62. It should be noted that an exhaust overflow groove 623 is provided on the bottom surface of the mold closing groove 621 along the length of the lower mold body 62. The exhaust overflow groove 623 connects to the multiple sets of trapezoidal cavities 622 to achieve exhaust and overflow during the molding process.

[0072] Furthermore, the lower mold mechanism 6 of this embodiment is also provided with an ejector assembly 64 and an ejector cylinder 63. The ejector assembly 64 can be a common ejector structure, such as an ejector pin. The ejector cylinder 63 drives the ejector assembly 64 to eject the molded foot pad and demold it.

[0073] It should be noted in this embodiment that the number of the first vacuum suction head 47 and the pressure plate is the same as the number of trapezoidal cavities 622, and their positions are set relative to each other.

[0074] Furthermore, both the upper mold body 7 and the lower mold body 62 are equipped with multiple sets of electric heating tubes 8 to heat the upper mold body 7 and the lower mold body 62.

[0075] The molding method of this embodiment includes the following steps:

[0076] Step 1: Loading. Start the rotary cylinder 43 to drive multiple sets of first vacuum suction heads 47 to deflect. After deflection, start the first cylinder 45 to drive the first vacuum suction head 47 to move down to the set position. Start the air pump (not shown in the figure) to suck up the blank sheet 100 delivered to the position through the first vacuum suction head 47. Then, the first cylinder 45 drives the first vacuum suction head 47 to rise and reset. The rotary cylinder 43 drives the first vacuum suction head 47 to deflect and reset. Then, start the first cylinder 45 again to drive the first vacuum suction head 47 to move down and place the sucked blank sheet 100 in the corresponding trapezoidal cavity 622 (initially, the lower mold mechanism 6 and the corresponding loading mechanism 4 are in the same position). Repeat the above operation to stack multiple sets of blank sheets 100 of different diameters in the trapezoidal cavity 622.

[0077] Step 2: Limiting. When the material loading is complete, start the rotary motor to drive the pressure plate to deflect until it is directly above the lower mold mechanism 6 after loading (at this time, the pressure plate corresponds one-to-one with the trapezoidal cavity 622). Start the second cylinder 54 to drive the pressure plate to move down and press against the uppermost blank sheet 100. Then start the rotary table 21 and the rotary motor, which rotate synchronously to rotate the lower mold mechanism 6 holding the blank sheet 100 to directly below the upper mold body 7. After that, the second cylinder 54 and the rotary motor drive the pressure plate to reset to the initial position (e.g., Figure 1 (as shown in the image);

[0078] Step 3, Compression vulcanization: The upper mold body 7 and the lower mold body 62 are heated by the electric heating tube 8. When the set temperature is reached, the hydraulic cylinder 33 is activated to drive the sliding base 34 to move down. The sliding base 34 drives the upper mold body 7 to move down and close with the lower mold body 62 in the lower mold mechanism 6.

[0079] Step 4: Demolding. During the mold closing process of the upper mold body 7 and a set of lower mold bodies 62, the ejector cylinder 63 in another set of lower mold mechanisms 6 is activated to drive the ejector assembly 64 to eject the formed foot pads out of the mold and collect them.

[0080] Step 5: After demolding, the lower mold mechanism 6 feeds material again through the corresponding side feeding mechanism 4 according to Step 1. After feeding, the auxiliary mechanism 5 limits the position again according to Step 2. After limiting the position, it goes through Step 3 and Step 4 in sequence to form continuous processing.

[0081] Example 2

[0082] Because the chassis feet in this invention are molded from high-performance polymer materials such as silicone and thermoplastic elastomers, they possess a certain degree of elasticity after molding. When ejected using conventional ejector pins, the elastic molded feet are not easily demolded. When the ejection force is small, the elastic deformation of the feet absorbs the ejection force, making it impossible to eject the product. When the ejection force is large, the feet are easily ejected from the trapezoidal cavity 622 (absorption and release of elastic potential energy), causing confusion and making collection difficult.

[0083] Based on this, this embodiment optimizes the structure of the ejector component 64 based on Embodiment 1, such as... Figures 6-9 As shown, in this embodiment, the ejector assembly 64 includes a first top plate 641, a top cylinder 642 is installed in the middle of the first top plate 641 and fixed by a fixing plate 643, an ejector pin 644 is inserted inside the top cylinder 642, the bottom of the ejector pin 644 passes through the fixing plate 643, and a second top plate 645 is connected to both sides of the ejector pin 644. An ejection groove 6411 is opened on both side walls of the top cylinder 642 corresponding to the second top plate 645, and the second top plates 645 on both sides of the ejector pin 644 can slide in the ejection groove 6411.

[0084] Further specific structures are as follows Figures 6-7 and Figures 13-14 As shown, the bottom of the lower mold body 62 has longitudinally formed ejector grooves 1 624 and 2 625 corresponding to the positions of each trapezoidal cavity 622. Ejector groove 2 625 is located above ejector groove 1 624, and ejector groove 1 624 is adapted to the first top plate 641. Ejector groove 2 625 is adapted to the second top plate 645. An ejector hole 626 is formed at the bottom of the corresponding trapezoidal cavity 622. The ejector cylinder 642 is slidably inserted into the ejector hole 626, and the ejector pin 644 is also slidably inserted into the inside of the ejector cylinder 642. The outer diameter of the ejector pin 644 is adapted to the inner diameter of the ejector cylinder 642. The ejector pin 644 is ejected by the ejector cylinder 642. The top surface of the ejector pin 644 and the top surface of the ejector pin 644 cooperate to form the forming surface of the bottom of the trapezoidal cavity 622, and the bottom of the ejector pin 644 abuts against the top surface of the lower mold mounting table 61 to limit the position of the ejector pin 644. The top surface of the ejection mating groove 625 is symmetrically provided with mounting grooves about the trapezoidal cavity 622. The two mounting grooves are provided with return springs 6410. One end of the return spring 6410 is connected to the bottom of the mounting groove, and the other end is connected to the second top plate 645 on the corresponding side. During installation, the return spring 6410 exerts a squeezing force on the second top plate 645, so that the bottom surface of the ejector pin 644 fits against the top surface of the lower mold mounting table 61 and remains stable.

[0085] It should be noted that there is a concave air groove 647 on the upper end of the inner wall of the top cylinder 642. The air groove 647 and the outer axial surface of the ejector pin 644 form an air cavity structure, and the top of the air cavity structure is 1-2mm away from the top surface of the top cylinder 642, so that the top of the top cylinder 642 and the ejector pin 644 can form a complete molding surface.

[0086] Furthermore, linkage seats 640 are symmetrically arranged at both ends of the first top plate 641, and linkage slots are opened inside the two linkage seats 640. The second top plate 645 on the same side is set in the corresponding linkage slot, and the top surface of the second top plate 645 is in contact with the top surface of the linkage slot to realize the linkage action of secondary ejection.

[0087] Furthermore, multiple first top plates 641 on the same side are connected to connecting plates 649, and the connecting plates 649 on both sides are connected to the corresponding ejection cylinders 63, so as to realize the synchronous ejection of each ejection component 64 by the ejection cylinders 63.

[0088] Furthermore, it should be noted that in this embodiment, the ejection of the top cylinder 642 and the ejection of the ejector pin 644 are delayed, thereby making the product ejection smoother. When the extension rod of the ejection cylinder 63 extends and drives the connecting plate 649 to rise, the connecting plate 649 first drives the first top plate 641 to rise, which in turn drives the top cylinder 642 to eject once. When the top cylinder 642 rises to the set position, the first top plate 641 presses the second top plate 645, which in turn drives the ejector pin 644 to eject a second time. After ejection, the first top plate 641 is driven to reset by the ejection cylinder 63, and the second top plate 645 is driven to reset by the reset spring 6410 and the linkage seat 640.

[0089] An adjustment plate 648 is also provided at the top of both ends of the first top plate 641. The adjustment plate 648 is located between the first top plate 641 and the second top plate 645. It can adjust the delayed ejection height according to the needs to adapt to the ejection of different products.

[0090] Furthermore, to ensure smoother ejection, the ejector pin 644 in this embodiment has an internal ventilation channel, and multiple sets of air holes 646 are formed on the top axial surface of the ejector pin 644. These air holes 646 are symmetrically arranged around the center of the ejector pin 644's axis, and their positions are lower than the highest point of the air cavity structure. An air passage 611 is formed inside the lower mold mounting platform 61, and a connecting pipe 612 is provided at the position corresponding to the trapezoidal cavity 622 of the air passage 611. One end of the connecting pipe 612 is connected to the air passage 611, and the other end is inserted into... The venting channel inside the ejector pin 644 (the tail of the ejector pin 644 is inserted into the venting channel during installation, which also serves as a certain limit) and the diameter of the venting channel is adapted to the diameter of the connecting pipe 612, is connected to an external air pump through the air channel 611 to allow air to enter the ejector pin 644, and the gas inside the ejector pin 644 is discharged from the air cavity through the air hole 646 in the gap of delayed ejection, which cools the molded pad, causes the product to shrink, facilitates demolding, and forms an airflow between the molding surface and the product, further improving the smoothness of demolding.

[0091] In order to further stabilize demolding, this embodiment replaces the pressure plate of the auxiliary mechanism 5 in embodiment 1 with the second vacuum suction head 56. By using the second vacuum suction head 56 to adsorb the top of the molded product during demolding, combined with ejection demolding, the efficiency of the molded foot pad is higher, and the process is more stable and faster.

[0092] The molding method in this embodiment includes the following steps:

[0093] Step A: Loading. Start the rotary cylinder 43 to drive multiple sets of first vacuum suction heads 47 to deflect. After deflection, start the first cylinder 45 to drive the first vacuum suction head 47 to move down to the set position. Start the air pump (not shown in the figure) to suck up the blank sheet 100 delivered to the position through the first vacuum suction head 47. Then, the first cylinder 45 drives the first vacuum suction head 47 to rise and reset. The rotary cylinder 43 drives the first vacuum suction head 47 to deflect and reset. Then, start the first cylinder 45 again to drive the first vacuum suction head 47 to move down and place the sucked blank sheet 100 in the corresponding trapezoidal cavity 622 (initially, the lower mold mechanism 6 and the corresponding loading mechanism 4 are in the same position). Repeat the above operation to stack multiple sets of blank sheets 100 of different diameters in the trapezoidal cavity 622.

[0094] Step B, Limiting: When the material loading is completed, start the rotary motor to drive the second vacuum suction head 56 to deflect to the top of the lower mold mechanism 6 after loading (at this time, the second vacuum suction head 56 corresponds one-to-one with the trapezoidal cavity 622). Start the second cylinder 54 to drive the second vacuum suction head 56 to move down and press against the uppermost blank sheet 100. Then start the rotary table 21 and the rotary motor, and rotate synchronously to rotate the lower mold mechanism 6 where the blank sheet 100 is placed to the bottom of the upper mold body 7. Then the second cylinder 54 drives the second vacuum suction head 56 to move up and reset. The rotary motor drives the second vacuum suction head 56 to deflect and move to the top of another set of lower mold mechanisms 6.

[0095] Step C, Compression vulcanization: The upper mold body 7 and the lower mold body 62 are heated by the electric heating tube 8. When the set temperature is reached, the hydraulic cylinder 33 is activated to drive the sliding base 34 to move down. The sliding base 34 drives the upper mold body 7 to move down and close with the lower mold body 62 in the lower mold mechanism 6.

[0096] Step D, demolding: During the mold closing process between the upper mold body 7 and a set of lower mold bodies 62, the second vacuum suction head 56, which has moved above the other set of lower mold mechanisms 6, is driven downward by the second cylinder 54 to a set position. The air pump is then activated, using the second vacuum suction head 56 to suck up the formed foot pad. Simultaneously, the ejection cylinder 63 is activated, causing the first top plate 641 to move upward. The first top plate 641 then causes the ejector cylinder 642 to move upward, pushing the product. At the same time, an external air pump is activated, allowing air to enter the vent channel inside the ejector pin 644 through the connecting pipe 612. Air is then discharged from the air chamber during the delayed ejection gap (e.g., ...). Figure 9 As shown), when the top cylinder 642 rises to the set position, the first top plate 641 presses against the second top plate 645, thereby driving the ejector pin 644 to eject the product a second time, causing the product to be demolded. After demolding, the rotary motor drives the second vacuum suction head 56 to rotate and reset to the initial position (i.e., as shown). Figure 1 As shown, facing the trapezoidal platform 11, the molded foot pads are released;

[0097] After step E, the lower mold mechanism 6, after demolding, feeds material again through the corresponding side feeding mechanism 4 according to step A. After feeding, the auxiliary mechanism 5 limits the position again according to step B. After limiting the position, it goes through steps C and D in sequence to form continuous processing.

[0098] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0099] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0100] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A molding equipment for producing chassis feet, characterized in that, include: Molding machine (1); Rotary mechanism (2), which is installed in the middle of the forming machine (1), and multiple sets of lower mold mechanisms (6) are provided on the rotary mechanism (2). The mold closing mechanism (3) and the upper mold body (7) are provided. The mold closing mechanism (3) is located on one side of the molding machine (1), and the upper mold body (7) is installed on the mold closing mechanism (3). The upper mold body (7) is adapted to multiple sets of the lower mold mechanisms (6). An electric heating element (8) is disposed in the upper mold body (7) and the lower mold mechanism (6); The feeding mechanism (4) is symmetrically arranged at both ends of the rotary mechanism (2); An auxiliary mechanism (5) is provided in the middle of the molding machine (1); the auxiliary mechanism (5) includes a second vacuum suction head (56). The second vacuum suction head (56) of the auxiliary mechanism (5) limits the blank in the lower mold mechanism (6) and assists in demolding the molded product; The feeding mechanism (4) includes a support base (41), on which a rotary cylinder (43) is mounted. The rotary cylinder (43) is connected to a rotary arm (44), on which a first cylinder (45) is mounted. The telescopic rod of the first cylinder (45) is connected to a gripping plate (46), on which multiple sets of first vacuum suction heads (47) are provided. The feeding mechanism (4) has two sets, which cooperate with multiple sets of lower mold mechanisms (6) mounted on the rotary mechanism (2) to perform continuous processing. The auxiliary mechanism (5) includes a fixed cylinder (51) installed on the molding machine base (1). A rotary motor is installed inside the fixed cylinder (51). The output shaft of the rotary motor is connected to a rotating shaft (52). A rotating rod (53) is connected to the top of the rotating shaft (52). A second cylinder (54) is installed at the other end of the rotating rod (53). The telescopic rod of the second cylinder (54) is connected to a connecting frame (55). Multiple sets of second vacuum suction heads (56) are provided, and multiple sets of second vacuum suction heads (56) are installed on the connecting frame (55). The lower mold mechanism (6) includes a lower mold mounting platform (61), on which a lower mold body (62) is mounted. The lower mold body (62) has multiple trapezoidal cavities (622) inside. An ejector assembly (64) is provided inside the lower mold body (62). The ejection assembly (64) includes a first top plate (641), a top cylinder (642) is installed in the middle of the first top plate (641), an ejector pin (644) is inserted inside the top cylinder (642), the bottom of the ejector pin (644) is disposed through a fixing plate (643), a second top plate (645) is connected to both sides of the ejector pin (644), and ejection grooves (6411) are opened on both sides of the top cylinder (642), and the second top plate (645) is slidably disposed in the ejection grooves (6411); The bottom of the lower mold body (62) is provided with an ejection mating groove 1 (624) and an ejection mating groove 2 (625), which are provided corresponding to the positions of each trapezoidal cavity (622); the interior of the lower mold body (62) is provided with an ejection hole (626) corresponding to the position of the trapezoidal cavity (622); the ejector cylinder (642) is slidably inserted into the ejection hole (626), and the outer diameter of the ejector cylinder (642) is adapted to the inner diameter of the ejection hole (626); the outer diameter of the ejector pin (644) is adapted to the inner diameter of the ejector cylinder (642), and the top surface of the ejector cylinder (642) and the top surface of the ejector pin (644) cooperate to form the forming surface of the bottom of the trapezoidal cavity (622).

2. The molding equipment for producing chassis feet according to claim 1, characterized in that, The mold closing mechanism (3) includes two sets of columns (31), and the top of the two sets of columns (31) is connected to a top plate (32). A hydraulic cylinder (33) is provided in the middle of the top plate (32). A sliding base (34) is slidably provided on the two sets of columns (31). The telescopic rod of the hydraulic cylinder (33) is connected to the sliding base (34). The upper mold body (7) is installed on the sliding base (34).

3. The molding equipment for producing chassis feet according to claim 1, characterized in that, The number of multiple sets of trapezoidal cavities (622) is the same as the number of multiple sets of the second vacuum suction head (56), and their positions correspond when the blank is confined; Furthermore, the rotary mechanism (2) is equipped with an ejector cylinder (63), which drives the ejector assembly (64) to eject and demold.

4. The molding equipment for producing chassis feet according to claim 1, characterized in that, The top surface of the ejection mating groove two (625) is symmetrically provided with an installation groove, and a reset spring (6410) is provided in the installation groove. The other end of the two sets of reset springs (6410) is connected to the second top plate (645). The bottom of the ejector pin (644) passes through the fixing plate (643), and the bottom surface of the ejector pin (644) abuts against the top surface of the lower mold mounting platform (61); the ejector pin (644) is limited by the lower mold mounting platform (61) and the return spring (6410); The first top plate (641) is symmetrically provided with linkage seats (640) at both ends. The two linkage seats (640) are provided with linkage grooves. The second top plate (645) is provided in the corresponding linkage groove, and the top surface of the second top plate (645) is in contact with the top surface of the linkage groove.

5. The molding equipment for producing chassis feet according to claim 4, characterized in that, The inner wall of the top cylinder (642) is provided with an air groove (647), and the air groove (647) and the outer axial surface of the ejector pin (644) form an air cavity; The ejector pin (644) has an internal ventilation channel, and the top axial surface of the ejector pin (644) has multiple sets of air holes (646), which are connected to the air cavity. The lower mold mounting platform (61) has an air passage (611) inside. The air passage (611) is provided with a connecting pipe (612) corresponding to the position of the trapezoidal cavity (622). One end of the connecting pipe (612) is connected to the air passage (611), and the other end of the connecting pipe (612) is inserted into the air passage inside the ejector pin (644).

6. A molding method for producing chassis feet, using the molding equipment as described in claim 5, characterized in that, Includes the following steps: Step A, feeding: The adsorbed blank sheet (100) is placed in the corresponding trapezoidal cavity (622) by the feeding mechanism (4). Repeat the above operation to stack multiple sets of blank sheets (100) of different diameters in the trapezoidal cavity (622). Step B, Limiting: When the feeding is completed, the second vacuum suction head (56) of the auxiliary mechanism (5) presses against the uppermost blank sheet (100). Then the rotary mechanism (2) and the auxiliary mechanism (5) rotate synchronously, rotating the lower mold mechanism (6) that holds the blank sheet (100) to directly below the upper mold body (7). Then the second vacuum suction head (56) moves to above another set of lower mold mechanisms (6). Step C, Compression vulcanization: The upper mold body (7) and the lower mold mechanism (6) are heated by the electric heating tube (8). When the temperature is reached, the mold closing mechanism (3) drives the upper mold body (7) to move down and close with the lower mold mechanism (6). Step D, demolding: During the mold closing process of the upper mold body (7) and a set of lower mold mechanisms (6), the second vacuum suction head (56) moved above the other set of lower mold mechanisms (6) and moved down to the set position, sucking up the formed foot pad. The ejector cylinder (63) drove the first top plate (641) to move up, and the first top plate (641) drove the ejector cylinder (642) to move up, pushing the product. At the same time, the external air pump was started, and air was introduced into the air passage inside the ejector pin (644) through the connecting pipe (612). The gas was discharged from the air chamber, and the ejector cylinder (642) continued to rise. The first top plate (641) squeezed the second top plate (645), which in turn drove the ejector pin (644) to eject for a second time, so that the product was demolded. After demolding, the second vacuum suction head (56) rotated and reset, releasing the formed foot pad. Step E, the lower mold mechanism (6) after demolding, repeats steps A, B, C and D to form continuous processing.

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