In-mold injection molding integrated forming device for automobile trim panel

Abstract

The invention relates to the technical field of plaque injection molding equipment, in particular to an automobile plaque in-mold injection molding integrated molding device, which comprises an injection molding machine main body and a mold, a mounting plate is arranged in the injection molding machine main body, and under the action of a guide groove and a guide frame, the mold enters the injection molding machine main body in a specific posture when being mounted, so that the injection molding machine main body can be conveniently mounted. Then, under the cooperation of a strong spring and a roller, a butt joint hole in the mold and a butt joint hole in the mounting plate are always in the same straight line and gradually tend to coincide, then under the cooperation of a clamping mechanism and a clamping plate, after the butt joint holes in the mold and the mounting plate are completely overlapped, the position of the mold is automatically limited, and the mold is reinforced through the clamping plate; direct manual contact with the lifted mold is not needed, so that the safety is high; and multiple times of adjustment are not needed in the new mold replacement process, workers can complete installation of the new mold only through simple operation, the replacement process is fast, efficiency is high, and the device is more stable during operation and low in fault rate.

Description

Technical Field

[0001] The invention relates to the technical field of trim panel injection molding equipment, in particular to an in-mold injection molding device for automobile trim panels. Background Art

[0002] The manufacture of automobile trim panels usually adopts the injection molding process, among which the in-mold injection molding technology is widely used due to its high efficiency and precision. At present, after the injection molding machine has been running for a long time, the mold replacement becomes an inevitable operation due to various reasons such as mold wear, material adaptability changes, product upgrades or production demand adjustments.

[0003] The operation of replacing the mold in the prior art is: after taking out the old mold, the new mold needs to be hoisted into the injection molding machine through the hoist. After the mounting holes on the mold and the injection molding machine are completely aligned, the mold is fixed to the injection molding machine through bolts and fixing seats. In this process, when the hoist hoists the mold through the lifting ring on the mold, the center of gravity position of the entire mold cannot be determined due to the unfixed internal shape of the mold, and the fixing position of the lifting ring on the mold cannot be well set accordingly. That is, in the process of hoisting the new mold, the new mold will always be in a tilted state in the air. After the tilted mold is hung inside the injection molding machine, it is necessary to manually straighten the tilted mold at a certain angle, and clamp the mold through the injection molding machine for preliminary fixation, and then continuously adjust the position of the mold to ensure that the mounting holes on the mold and the injection molding machine are completely aligned. This process requires a lot of time and energy, which consumes a lot of workers' labor. At the same time, there are certain safety hazards and a certain impact on the production efficiency of the enterprise. For this reason, we propose an in-mold injection molding device for automobile trim panels. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an automobile trim panel in-mold injection molding device, comprising an injection molding machine body and a mold, wherein a mounting plate is arranged in the injection molding machine body, and further comprising: A guide groove, which is provided on the mounting plate and has a triangular cross section when viewed from the side, and has inclined surfaces in the middle and on both sides; A guide frame, wherein the guide frame has two pieces, both of which are fixed on the mounting plate and are respectively located on both sides below the guide groove. The guide frame is L-shaped and has an inclined inner wall, and the inner wall thereof has the same inclination angle as the two sides of the guide groove and overlaps with each other; Centering mechanisms, four of which are mounted on the mounting plate and respectively connected to the four corners of the base plate of the mold, and the centering mechanisms limit the moving track of the mold in the main body of the injection molding machine; A clamping plate, wherein the clamping plates are two and are respectively located on two sides of the mold; The clamping mechanism is installed on the mounting plate and connected to the clamping plate and the base plate of the mold. The clamping mechanism fixes the base plate of the mold through the clamping plate, thereby limiting the position of the mold.

[0005] In some embodiments, the centering mechanism includes a fixed seat mounted on a mounting plate, a telescopic rod mounted on the fixed seat, an L-plate mounted on the top of the telescopic rod, two telescopic rods in a longitudinal array, one end fixed to the fixed seat, and the other end fixed to the L-plate, each of the telescopic rods is sleeved with a strong spring, one side of the strong spring is connected to the fixed seat, and the other side is connected to the L-plate, support rods are fixed to the inner wall of the L-plate, two support rods in a longitudinal array, each of the support rods is provided with a roller, and the roller is in contact with one side of the substrate of the mold.

[0006] In some embodiments, the clamping mechanism includes a limit block installed on a mounting plate, the limit block is fitted with the bottom of the substrate of the mold, and also includes a groove opened on the mounting plate, a first mounting seat is installed in the groove, the first mounting seat is located on one side of the mold, a first rotating shaft is installed on the first mounting seat, a first connecting rod is sleeved on the first rotating shaft, the first connecting rod is fixed to one of the clamping plates, a second rotating shaft is penetrated and installed at one end of the first connecting rod away from the first rotating shaft, a second connecting rod is sleeved on the second rotating shaft, a third rotating shaft is penetrated and installed at one end of the second connecting rod away from the second rotating shaft, the second connecting rod is located behind the mold, and both ends are respectively on both sides of the mold, and the groove A second mounting seat is provided inside, and the second mounting seat is located at the other side of the mold, and a fourth rotating shaft is installed on the second mounting seat, and a third connecting rod is sleeved on the fourth rotating shaft, and a fifth rotating shaft is installed through one end of the third connecting rod away from the fourth rotating shaft, and the third connecting rod is fixed to another clamping plate, and a fourth connecting rod is sleeved on the fifth rotating shaft, and a sixth rotating shaft is installed through one end of the fourth connecting rod away from the fifth rotating shaft. It also includes a self-locking motor installed in the groove, and a driving rod is fixed on the driving shaft of the self-locking motor, one end of the driving rod is penetrated by the sixth rotating shaft, and a circular groove is opened on the side of the driving rod away from the sixth rotating shaft, a disc is arranged in the circular groove, and the disc is penetrated by the third rotating shaft.

[0007] In some embodiments, brackets are installed on both sides of the limit block, sensors are installed on the brackets, and the sensors are electrically connected to the self-locking motor.

[0008] In some embodiments, the inner wall of the guide frame side is located between the center of the roller and the mold at the corresponding position, and the distance between the inner wall and the center of the roller is 1 / 3 to 1 / 2 of the diameter of the roller.

[0009] In some embodiments, the two clamping plates are both inclined.

[0010] In some embodiments, the roller is made of hard steel and is plated with chrome of not less than 0.2 mm on the surface.

[0011] In some embodiments, the mold consists of five parts: a male mold plate and its corresponding substrate, an ejection mechanism, a female mold plate and its corresponding substrate. The male mold plate corresponding substrate and the female mold plate corresponding substrate have the same centering mechanism and clamping mechanism.

[0012] The present invention has at least the following beneficial effects: 1. Under the action of the guide groove and the guide frame, the mold will enter the main body of the injection molding machine in a specific posture during installation. Then, with the cooperation of the strong spring and the roller, the docking holes on the mold and the docking holes on the mounting plate are always in the same straight line and gradually tend to overlap. Then, with the cooperation of the clamping mechanism and the clamping plate, when the docking holes on the mold and the mounting plate are completely overlapped, the position of the mold is automatically limited and reinforced by the clamping plate. There is no need for manual direct contact with the lifted mold, which is highly safe. 2. There is no need to make multiple adjustments during the replacement of the new mold. The staff only needs to perform simple operations to complete the installation of the new mold. The replacement process is fast and efficient. 3. This device is almost composed of mechanical structure, which makes the device more stable during operation and has a low failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 3 It is a schematic diagram of the cross-sectional side view structure of the present invention; Figure 4 It is a schematic diagram of the cross-sectional front view structure of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the structure at B in the middle; Figure 6 For the present invention Figure 5 Schematic diagram of the structure at C in the middle; Figure 7 It is a schematic diagram of the internal structure of the present invention; Figure 8 This is a schematic diagram of the centering mechanism structure of the present invention; Fig. 9 This is a structural schematic diagram of Example 2 of the present invention.

[0014] In the figure: 1. injection molding machine body; 2. mold; 3. mounting plate; 4. guide groove; 5. guide frame; 6. centering mechanism; 61. fixed seat; 62. telescopic rod; 63. L plate; 64. strong spring; 65. support rod; 66. roller; 7. clamping plate; 8. clamping mechanism; 81. limit block; 82. groove; 83. first mounting seat; 84. first rotating shaft; 85. first connecting rod; 86. second rotating shaft; 87. second connecting rod; 88. third rotating shaft; 89. second mounting seat; 810. fourth rotating shaft; 811. third connecting rod; 812. fifth rotating shaft; 813. fourth connecting rod; 814. sixth rotating shaft; 815. self-locking motor; 816. driving rod; 817. circular groove; 818. disc; 819. bracket; 820. sensor. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Embodiment 1: See also Figure 1-8 The present invention provides a technical solution: an in-mold injection molding device for automobile trim, comprising an injection molding machine body 1 and a mold 2, wherein a mounting plate 3 is arranged in the injection molding machine body 1, and further comprising: The guide groove 4 is provided on the mounting plate 3. Figure 4 As shown, the side cross-section is a triangle, and the middle part and the two side parts are inclined surfaces; The guide frame 5 has two pieces, both of which are fixed on the mounting plate 3 and are located on both sides below the guide groove 4. Figure 2 As shown, the guide frame 5 is L-shaped and the inner wall is inclined, and the inner wall and the two side portions of the guide groove 4 have the same inclination angle and overlap; Centering mechanisms 6, there are four centering mechanisms 6, which are installed on the mounting plate 3 and are respectively connected to the four corners of the base plate portion of the mold 2. The centering mechanisms 6 limit the moving trajectory of the mold 2 in the injection molding machine body 1; Clamping plates 7, there are two clamping plates 7, which are respectively located on both sides of the mold 2; The clamping mechanism 8 is installed on the mounting plate 3 and is connected to the clamping plate 7 and to the base plate portion of the mold 2. The clamping mechanism 8 fixes the base plate of the mold 2 through the clamping plate 7, thereby limiting the position of the mold 2.

[0017] The centering mechanism 6 includes a fixed seat 61 installed on the mounting plate 3, a telescopic rod 62 is installed on the fixed seat 61, an L-plate 63 is installed on the top of the telescopic rod 62, there are two telescopic rods 62, which are arranged in a longitudinal array, and strong springs 64 are sleeved on the telescopic rods 62, one side of the strong spring 64 is connected to the fixed seat 61, and the other side is connected to the L-plate 63, and the inner wall of the L-plate 63 is fixed with support rods 65, there are two support rods 65, which are arranged in a longitudinal array, and rollers 66 are provided on the support rods 65, and the rollers 66 are in contact with one side of the substrate of the mold 2.

[0018] The clamping mechanism 8 includes a limit block 81 installed on the mounting plate 3, the limit block 81 is fitted with the bottom of the substrate of the mold 2, and also includes a groove 82 opened on the mounting plate 3, a first mounting seat 83 is installed in the groove 82, the first mounting seat 83 is located on one side of the mold 2, a first rotating shaft 84 is installed on the first mounting seat 83, a first connecting rod 85 is sleeved on the first rotating shaft 84, the first connecting rod 85 is fixed to one of the clamping plates 7, a second rotating shaft 86 is installed through the end of the first connecting rod 85 away from the first rotating shaft 84, a second connecting rod 87 is sleeved on the second rotating shaft 86, a third rotating shaft 88 is installed through the end of the second connecting rod 87 away from the second rotating shaft 86, the second connecting rod 87 is located behind the mold 2, and the two ends are respectively on both sides of the mold 2, a second mounting seat 89 is arranged in the groove 82, and the second mounting seat 89 Located on the other side of the mold 2, a fourth rotating shaft 810 is installed on the second mounting seat 89, and a third connecting rod 811 is sleeved on the fourth rotating shaft 810, and a fifth rotating shaft 812 is installed through the end of the third connecting rod 811 away from the fourth rotating shaft, and the third connecting rod 811 is fixed to another clamping plate 7, a fourth connecting rod 813 is sleeved on the fifth rotating shaft 812, and a sixth rotating shaft 814 is installed through the end of the fourth connecting rod 813 away from the fifth rotating shaft 812, and also includes a self-locking motor 815 installed in the groove 82, a driving rod 816 is fixed on the driving shaft of the self-locking motor 815, one end of the driving rod 816 is penetrated by the sixth rotating shaft 814, and a circular groove 817 is opened on the side of the driving rod 816 away from the sixth rotating shaft 814, a disc 818 is arranged in the circular groove 817, and the disc 818 is penetrated by the third rotating shaft 88.

[0019] Brackets 819 are installed on both sides of the limit block 81 , and sensors 820 are installed on the brackets 819 . The sensors 820 are electrically connected to the self-locking motor 815 .

[0020] When the bottom of the mold 2 contacts the limit block 81, the mold 2 presses the sensor 820 at the same time. At this time, the sensor 820 sends a signal to the self-locking motor 815, and the self-locking motor 815 starts to control other parts of the clamping mechanism 8 to drive the clamping plate 7 to fix the substrate of the mold 2. It should be noted that if the old mold is to be dismantled, the self-locking motor 815 rotates in the reverse direction while the sensor 820 is turned off, driving the clamping plate 7 to release the clamping of the mold 2, and subsequent disassembly can be carried out.

[0021] The inner wall of the side surface of the guide frame 5 is located between the center of the roller 66 at the corresponding position and the mold 2 , and the distance between the inner wall and the center of the roller 66 is 1 / 3 to 1 / 2 of the diameter of the roller 66 .

[0022] When the mold 2 passes through the guide frame 5 and enters between the rollers 66 on both sides thereof, the pressure exerted from top to bottom by the mold 2 on the rollers 66 can be reduced, thereby reducing damage to the rollers 66 by the mold 2 .

[0023] The two clamping plates 7 are both arranged tilted.

[0024] When the clamping mechanism 8 is in operation, the clamping plate 7 is driven to rotate and clamp the mold 2. Then, one side of the clamping plate 7 is tightly fitted with one side of the mold 2 to reinforce the position limitation of the mold 2 substrate.

[0025] Working principle: After the staff takes out the old mold 2, they lift the new mold 2 through the sling. Since the center of gravity of the mold 2 is too far from the force application point of the sling on the lifting ring of the mold 2, the new mold 2 will tilt due to uneven force. The staff uses the crane to make the inclined side of the new mold 2 fit with the guide groove 4, and then lowers the mold 2 through the sling. Since the middle part and both side parts of the guide groove 4 are inclined surfaces, under the gravity of the mold 2 itself, the mold 2 moves along the guide groove 4 to the guide frame 5. The sling always bears most of the gravity of the mold 2. Then, under the restriction of the guide frame 5, the base plate part of the mold 2 drives the mold 2 to be vertical as a whole. Then, the two sides of the bottom of the base plate of the mold 2 squeeze the roller 66. The roller 66 compresses the strong spring 64 through the support rod 65, the L plate 63, and the telescopic rod 62. The reaction force generated by the compression of the strong spring 64 drives the mold 2 to always be located at the center point of the installation position, that is, the docking hole on the mold 2 and the docking hole on the installation plate 3 are always on the same horizontal line; Since the strong spring 64 has a certain deformation ability, and the product needs high precision when injected through the mold 2, the clamping mechanism 8 is required to fix it; As the mold 2 continues to fall, the bottom of the mold 2 contacts the limiting block and is limited by the limiting block. At this time, under the cooperation of the roller 66 and the limiting block, the docking holes on the template and the mounting plate 3 correspond, and the bottom of the mold 2 contacts the limiting block at the same time, triggering the sensor 820. The sensor 820 can be a laser type, a pressure type, etc. Its main purpose is to send a signal to the self-locking motor 815 to start the self-locking motor 815 after the base plate part of the mold 2 contacts the limiting block 81, which is a prior art. After the self-locking motor 815 is started, the driving rod 816 is driven to rotate. During the rotation of the driving rod 816, the third rotating shaft 88 is driven to rotate away from the mold 2. The third rotating shaft 88 stretches the second connecting rod 87. The second connecting rod 87 drives the first connecting rod 85 to rotate around the first rotating shaft 84 through the second rotating shaft 86, driving the clamping plate 7 fixed on the first connecting rod 85 to clamp one side of the base of the mold 2. At the same time, the driving rod 816 is located on one side of the sixth rotating shaft 814 and drives the sixth rotating shaft 814 to move closer to the mold 2. The template rotates in the direction of rotation, and the sixth rotating shaft 814 drives the third connecting rod 811 to rotate with the fourth rotating shaft 810 as the center through the fourth connecting rod 813 and the fifth rotating shaft 812. The third connecting rod 811 drives the clamping plate 7 fixed thereto to clamp the other side of the base of the mold 2, thereby completing the fixation of the mold 2. At this time, under the fixation of the limit block 81 and the clamping plate 7, the docking holes of the mold 2 and the mounting plate 3 are completely overlapped, which is convenient for subsequent operations. The entire operation process is simple, and the staff does not need to directly contact the mold 2, which is highly safe.

[0026] Embodiment 2: See also Figure 8 , 9 Based on Example 1, this application further optimizes this solution: The roller 66 is made of hard steel and is plated with no less than 0.2 mm of chromium on its surface. Since the substrate of the mold 2 is angular and has a large overall weight, when the roller 66 is pressed, its bottom edge will exert a great pressure on the roller 66. The hard steel material can greatly extend the service life of the roller 66, and the chrome plating can make the surface of the roller 66 smoother, reduce the friction between the roller 66 and the substrate of the mold 2, and reduce the wear of the substrate on the roller 66.

[0027] The mold 2 consists of five parts: a male mold plate and its corresponding substrate, an ejection mechanism, a female mold plate and its corresponding substrate. The male mold plate corresponding substrate and the female mold plate corresponding substrate have a centering mechanism 6 and a clamping mechanism 8 of the same design.

[0028] The ejection mechanism, the male template and its corresponding substrate are fixed as a whole, and the female template and its corresponding substrate are fixed as a whole. When installing the mold 2, the male template and its connecting part, the female template and its connecting part can be directly installed and fixed uniformly, which is more efficient.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An in-mold injection molding device for an automobile trim panel, comprising an injection molding machine body (1) and a mold (2), wherein a mounting plate (3) is arranged in the injection molding machine body (1), and characterized in that: Also includes: A guide groove (4), the guide groove (4) being provided on the mounting plate (3), having a triangular cross-section in side view, and having a middle portion and two side portions which are both inclined surfaces; A guide frame (5), wherein the guide frame (5) comprises two pieces, both of which are fixed on the mounting plate (3) and are respectively located on two sides below the guide groove (4); the guide frame (5) is L-shaped and has an inclined inner wall; the inner wall has the same inclination angle as the two side portions of the guide groove (4), and the two sides of the guide groove (4) overlap; Centering mechanisms (6), four of which are mounted on the mounting plate (3) and respectively connected to four corners of the base plate of the mold (2), and the centering mechanisms (6) limit the movement trajectory of the mold (2) within the injection molding machine body (1); A clamping plate (7), wherein the clamping plates (7) are two in number and are located on two sides of the mold (2) respectively; A clamping mechanism (8), wherein the clamping mechanism (8) is mounted on the mounting plate (3), connected to the clamping plate (7), and connected to a base plate portion of the mold (2); the clamping mechanism (8) fixes the base plate of the mold (2) via the clamping plate (7), thereby limiting the position of the mold (2).

2. The in-mold injection molding device for automobile trim panels according to claim 1, characterized in that: The centering mechanism (6) comprises a fixing seat (61) mounted on the mounting plate (3); a telescopic rod (62) is mounted on the fixing seat (61); an L-plate (63) is mounted on the top of the telescopic rod (62); there are two telescopic rods (62) arranged in a longitudinal array, one end of which is fixed to the fixing seat (61) and the other end of which is fixed to the L-plate (63); a strong spring (64) is sleeved on each of the telescopic rods (62); one side of the strong spring (64) is connected to the fixing seat (61) and the other side is connected to the L-plate (63); support rods (65) are fixed to the inner wall of the L-plate (63); there are two support rods (65) arranged in a longitudinal array; each of the support rods (65) is provided with a roller (66); the roller (66) is in contact with one side of the base plate of the mold (2).

3. The in-mold injection molding device for automobile trim panels according to claim 2, characterized in that: The clamping mechanism (8) comprises a limit block (81) mounted on the mounting plate (3), the limit block (81) being in contact with the bottom of the base plate of the mold (2), and further comprises a groove (82) provided on the mounting plate (3), a first mounting seat (83) being mounted in the groove (82), the first mounting seat (83) being located on one side of the mold (2), a first rotating shaft (84) being mounted on the first mounting seat (83), a first connecting rod (85) being sleeved on the first rotating shaft (84), and the first connecting rod (85) being The first connecting rod (85) is fixed to one of the clamping plates (7); a second rotating shaft (86) is installed through one end of the first connecting rod (85) away from the first rotating shaft (84); a second connecting rod (87) is sleeved on the second rotating shaft (86); a third rotating shaft (88) is installed through one end of the second connecting rod (87) away from the second rotating shaft (86); the second connecting rod (87) is located behind the mold (2) and its two ends are respectively located on both sides of the mold (2); a second mounting seat (89) is provided in the groove (82); the second mounting seat (89) is located at the other side of the mold (2), the second mounting seat (89) is mounted with a fourth rotating shaft (810), the fourth rotating shaft (810) is mounted with a third connecting rod (811), the end of the third connecting rod (811) away from the fourth rotating shaft (810) is penetrated by a fifth rotating shaft (812), and the third connecting rod (811) is fixed to another clamping plate (7), the fifth rotating shaft (812) is sleeved with a fourth connecting rod (813), the fourth connecting rod (813) is away from the fifth rotating shaft (8 A sixth rotating shaft (814) is installed through one end of the self-locking motor (815) and is also included in the groove (82). A driving rod (816) is fixed on the driving shaft of the self-locking motor (815). One end of the driving rod (816) is penetrated by the sixth rotating shaft (814). A circular groove (817) is formed on the side of the driving rod (816) away from the sixth rotating shaft (814). A circular disc (818) is arranged in the circular groove (817). The circular disc (818) is penetrated by the third rotating shaft (88).

4. The in-mold injection molding device for automobile trim panels according to claim 3, characterized in that: Brackets (819) are installed on both sides of the limit block (81), and sensors (820) are installed on the brackets (819). The sensors (820) are electrically connected to the self-locking motor (815).

5. The in-mold injection molding device for automobile trim panels according to claim 4, characterized in that: The inner wall of the side of the guide frame (5) is located between the center of the roller (66) at the corresponding position and the mold (2), and after the mold (2) is installed, the distance between the center of the roller (66) and the mold (2) is 1 / 3 to 1 / 2 of the diameter of the roller (66).

6. The in-mold injection molding device for automobile trim panels according to claim 5, characterized in that: The two clamping plates (7) are both arranged at an inclination, and after the clamping mechanism (8) drives the clamping plates (7) to rotate and clamp the mold (2), one side of the clamping plates (7) is tightly fitted to one side of the mold (2).

7. The in-mold injection molding device for automobile trim panels according to claim 2, characterized in that: The roller (66) is made of hard steel and has a surface plated with chromium having a thickness of not less than 0.2 mm.

8. The in-mold injection molding device for automobile trim panels according to claim 1, characterized in that: The mould (2) is composed of five parts: a male mould plate and its corresponding substrate, an ejection mechanism, a female mould plate and its corresponding substrate. The male mould plate corresponding substrate and the female mould plate corresponding substrate are provided with a centre mechanism (6) and a clamping mechanism (8) of the same design.

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