Injection mold for forming different shapes of products in one shot and two shots

Abstract

The application discloses an injection mold for product forming one-shot and two-shot different glue position shapes, which comprises an upper mold plate, a rotating plate and a lower mold plate, a sliding block and shovel base mechanism is arranged in a fixed groove, at least one one-shot shovel and at least one two-shot shovel are arranged at corresponding positions of both ends of the bottom of the upper mold plate; the sliding block and shovel base mechanism comprises an outer sliding block capable of horizontally sliding, an inner sliding block horizontally slidably connected with the inner side of the outer sliding block and two sliding block pressing strips respectively arranged on both sides of the outer sliding block, the front end of the outer sliding block is fixed with an outer insert, the front end of the inner sliding block is fixed with an inner insert, the front end of the outer insert can extend into a cavity formed between a male mold plate and a female mold plate, and the inner insert is horizontally connected with the outer insert. The mold combines the design scheme of two independent sliding block mechanisms into the design scheme of one outer sliding block and one inner sliding block to realize the existing requirements, the development cost of the mold is obviously reduced, and the production efficiency of the product is obviously improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to an injection mold for molding products with different glue positions in the first and second shots. Background Technology

[0002] A window regulator is a device for raising and lowering car door windows. The housing of a window regulator generally consists of two parts: a hard plastic part and a soft plastic part, both injection molded. Because the hard and soft plastic parts are made of different materials, the injection molding process is generally divided into two steps. The first step is to use a mold to injection mold the hard plastic part, followed by a second injection molding process to mold the soft plastic part on top of the hard plastic part. During the injection molding of the hard plastic part, a circular hole needs to be formed on it, and then the soft plastic is injected into the circular hole to an appropriate depth to mold the soft plastic part.

[0003] Conventional designs involve simultaneously designing a sliding block mechanism on both the female and male molds at the same location to form the first and second injection parts (i.e., the hard plastic part and the soft plastic part). This can cause interference between the sliding block mechanisms of the front and rear molds during movement, affecting product molding. Alternatively, the hard plastic part of the window regulator is injection molded first, then removed from the mold and placed into another injection mold to injection mold the soft plastic part. Because a circular hole is formed in the hard plastic part after the first injection molding, the depth to which the soft plastic part extends into the hole during the second injection molding is difficult to control. If the hole is too large or too small, the window regulator will be unusable, requiring rework, which is wasteful of materials, time-consuming, labor-intensive, and increases production costs. Therefore, it is necessary to improve the structure of the sliding block mechanism in existing injection molds to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems by designing an injection mold for molding products with different glue positions in the first and second injection stages. This solves the problem that conventional slider mechanisms interfere with the molding of first-injection and second-injection products, thus affecting the product molding process.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: an injection mold for forming products with different glue positions in one-shot and two-shot processes, comprising an upper mold plate, a rotating plate, and a lower mold plate. The lower mold plate is provided with a receiving groove for accommodating the rotating plate. At least one mounting groove for installing a female mold plate is provided at each of the two ends of the upper part of the rotating plate. At least one mounting groove for installing a male mold plate is provided at each of the two ends of the bottom of the upper mold plate. The male and female mold plates are interlocked and formed between the male and female mold plates to create a cavity for product forming. At least one fixing groove is provided at each end of the rotating plate. The fixing groove is located on one side of the mounting groove on the rotating plate. A slider shovel base mechanism is provided in each fixing groove. At least one first-shot shovel and at least one second-shot shovel are respectively provided at corresponding positions at both ends of the bottom of the upper mold plate. The first-shot shovel and the second-shot shovel are respectively corresponding to two slider shovel base mechanisms. The upper mold plate can drive the first-shot shovel and the second-shot shovel to move up and down.

[0006] The slider base mechanism includes an outer slider that can slide horizontally, an inner slider that is horizontally slidably connected to the inner side of the outer slider, and two slider pressure strips respectively disposed on both sides of the outer slider. The front end of the outer slider is fixed with an outer insert, and the front end of the inner slider is fixed with an inner insert. The front end of the outer insert can extend into the cavity formed between the male template and the female template. The inner insert and the outer insert are horizontally interlocked and can be inserted into the cavity formed between the male template and the female template.

[0007] Both the outer and inner sliders are provided with through holes that extend vertically and allow the first and second shovels to move vertically through each other. A sliding block with an inclined surface is provided on the inner wall of the through hole of the inner slider near the inner insert. A sliding inclined surface is provided on one side of the first and second shovels. A sliding groove is provided on the sliding inclined surface of the second shovel, and the sliding block on the inner slider can be embedded in the sliding groove.

[0008] Before injection molding, during the downward movement of the injection spatula, the sliding inclined surface on the injection spatula can cooperate with the inclined surface on the sliding block on the inner side of the inner slider to control the horizontal sliding of the inner slider relative to the outer slider, and can drive the inner insert to move an appropriate distance into the outer insert.

[0009] Before injection molding, during the downward movement of the two injection spades, the sliding block on the inner side of the inner slider can slide up and down along the sliding groove on the two injection spades, and can drive the inner insert at the front end of the inner slider to move a suitable distance into the outer insert. The distance that the two injection spades drive the inner insert to move into the outer insert is less than the distance that the first injection spade drives the inner insert to move into the outer insert. During the upward movement of the two injection spades, the inner slider and the inner insert slide horizontally together, and can control the inner insert and the outer insert to exit from the cavity formed between the male mold plate and the female mold plate.

[0010] Furthermore, a wear-resistant plate is fixedly installed in the fixed groove, and the slider pressure strip is located on both sides of the wear-resistant plate and is fixedly connected to the rotating plate by bolts. The two sides of the outer slider are horizontally slidably connected to the gap formed between the wear-resistant plate and the slider pressure strip.

[0011] Furthermore, the wear-resistant plate is provided with at least one fixing member, and the fixing member is provided with a limiting member. The middle of the limiting member protrudes upward to form a limiting protrusion with a triangular cross-sectional shape. At least one limiting groove that cooperates with the limiting protrusion is opened at each end of the bottom of the outer slide plate. The two side walls of the limiting groove are inclined surfaces.

[0012] Furthermore, spring pressure plates and slider movable pins are provided on both sides of the outer slider, and a buffer spring is provided between the spring pressure plates and the slider movable pin. The slider movable pin is telescopically connected to the outer slider.

[0013] Furthermore, both sides of the shovel are recessed inward to form a clearance area, and the movable pin of the slider can be inserted into the clearance area without affecting the up and down movement of the shovel.

[0014] Each of the two shovels has an inclined guide groove on both sides, and the sliding pin can be inserted into the guide groove.

[0015] Furthermore, several semi-circular grooves are arranged in an array on the outer walls of both sides of the inner slider, and headless screws and ball screws are provided on both sides of the outer slider. The headless screws are connected to the ball screws, and the front end of the ball screws abuts against the semi-circular grooves on the outer wall of the inner slider.

[0016] Furthermore, an elongated hole is provided at the rear end of each side of the inner slider, and a headless screw and a limiting pin are provided on both sides of the outer slider. The headless screw is connected to the limiting pin, and the limiting pin can be inserted into the elongated hole on the outer wall of the inner slider.

[0017] Furthermore, a buffer spring is provided at the front end of the inner slider, and a circular groove for accommodating the buffer spring is provided on the outer wall of the outer insert, the depth of which is consistent with the length of the buffer spring after compression.

[0018] Furthermore, the upper part of the inner slider is provided with an insertion hole that is offset from the inner insert, and a pin is provided in the insertion hole. The inner insert has a semi-circular through groove that runs vertically through the inner insert, and the pin can be inserted into the through groove on the inner insert.

[0019] Furthermore, the rotating plate is provided with a limiting screw to restrict the sliding distance of the outer slider.

[0020] Its advantages over existing technologies are:

[0021] In this invention, specially designed first and second injection spades control the insertion of the inner insert into the outer insert and move it by different distances. As the first and second injection spades move downwards, they control the horizontal movement of the outer and inner sliders, allowing the inner insert at the front end of the inner slider to insert into the cavity between the male and female mold plates, thus facilitating product molding. Since the first injection spade controls the molding of the hard plastic portion of the product, and the second injection spade controls the molding of the soft plastic portion, after the hard plastic portion is molded, rotating the two ends of the turntable allows the second injection spade to control the molding of the soft plastic portion of the product based on the molded hard plastic portion. This method of molding eliminates the need to disassemble the mold, remove the hard plastic part, and place it into another mold to mold the soft plastic part. During the upward movement of the two injection spatulas, the outer and inner sliders can be simultaneously controlled to move backward, allowing the outer and inner inserts to exit from the cavity between the male and female mold plates, thus opening the mold and saving mold opening time. The injection mold proposed in this invention not only achieves stable and reliable product manufacturing but also saves mold design space, thereby enabling multi-cavity mold manufacturing. This not only saves mold development costs but also improves product production efficiency and significantly enhances product quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 yes Figure 1 A schematic diagram of the isometric structure after removing the upper template;

[0024] Figure 3 This is a schematic diagram of the structure of the transfer plate and the base in this invention;

[0025] Figure 4 yes Figure 3 Enlarged view of the structure at point A in the middle;

[0026] Figure 5 This is a schematic diagram of the transfer plate in this invention;

[0027] Figure 6 yes Figure 5 Enlarged view of the structure at point B;

[0028] Figure 7 This is a schematic diagram of the structure of the shovel and the slider shovel base mechanism in this invention when they are in cooperation;

[0029] Figure 8 yes Figure 7 A schematic diagram of the exploded structure;

[0030] Figure 9 yes Figure 7 A schematic diagram of the cross-sectional structure;

[0031] Figure 10This is a schematic diagram of the structure of the two-shot shovel and the slider shovel base mechanism in this invention when they are in cooperation;

[0032] Figure 11 yes Figure 10 A schematic diagram of the exploded structure;

[0033] Figure 12 yes Figure 10 A schematic diagram of the cross-sectional structure;

[0034] Figure 13 This is a schematic diagram of the wear-resistant plate in this invention;

[0035] Figure 14 This is a schematic diagram of the structure of the outer slider in this invention;

[0036] Figure 15 This is a schematic diagram of the bottom structure of the outer slider in this invention;

[0037] Figure 16 This is a schematic diagram of the structure of a shovel in this invention;

[0038] Figure 17 This is a schematic diagram of the structure of the two-shot shovel in this invention;

[0039] Figure 18 This is a schematic diagram of the assembly structure of the inner slider and the inner insert in this invention;

[0040] Figure 19 This is a structural view of the inner slider in this invention.

[0041] In the diagram, 1. Upper template; 2. Lower template; 3. Base; 4. Rotating plate; 401. Mounting groove; 402. Fixing groove; 5. Slider base mechanism; 51. Outer slider; 511. Limiting groove; 52. Slider pressure bar; 53. Inner slider; 531. Sliding block; 532. Semi-circular groove; 533. Oblong hole; 534. Insertion hole; 54. Wear-resistant plate; 55. Limiting screw; 56. Spring pressure plate; 57. Headless screw. 58. Buffer spring; 59. Slider movable pin; 60. Ball screw; 61. Limit pin; 62. Pin; 63. Fixing component; 64. Limiting component; 641. Limiting protrusion; 6. Male template; 7. Female template; 8. First shot shovel; 801. Sliding inclined surface; 802. Clearance area; 9. Outer insert; 10. Inner insert; 101. Through groove; 11. Second shot shovel; 111. Sliding groove; 112. Guide groove; 12. Rotating shaft. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] As Figures 1-6 shown, a preferred embodiment of the present invention provides an injection mold for forming different glue positions and shapes in one-shot and two-shot processes for product molding. The mold mainly includes an upper template 1, a rotating plate 4, and a lower template 2. A receiving groove is formed on the lower template 2, and the rotating plate 4 is fixed in the receiving groove. The upper template 1 is located above the lower template 2, and the lower template 2 is fixed on a base 3. The bottom of the base 3 is connected to a rotating shaft 12. After the upper template 1 and the lower template 2 are opened, the rotating shaft 12 can drive the rotating plate 4 to rotate together with the lower template 2;

[0044] Referring Figure 5 to this, in this embodiment, 8 fixing grooves 402 are formed at each end of the rotating plate 4, a total of 16 fixing grooves 402. A female template 7 is fixed in each fixing groove 402 by bolts. An installation groove 401 is provided on one side of each fixing groove 402, and the depth of the installation groove 401 is less than that of the fixing groove 402. A slider shoveling mechanism 5 is provided in each installation groove 401. The slider shoveling mechanisms 5 at both ends of the rotating plate 4 are symmetrically distributed left and right. At the same time, a one-shot shovel 8 and a two-shot shovel 11 are respectively provided in the slider shoveling mechanisms 5 at both ends of the rotating plate 4. The upper ends of the one-shot shovel 8 and the two-shot shovel 11 are fixed to the upper template 1 by bolts, and the lower ends are slidably connected to the slider shoveling mechanism 5 up and down;

[0045] 16 fixing grooves 402 are also provided at the bottom of the upper template 1, corresponding to the fixing grooves 402 on the rotating plate 4 respectively. A male template 6 is provided on each female template 7. When the upper template 1 and the lower template 2 are buckled up and down, the male template 6 can be accommodated in the fixing groove 402 at the bottom of the upper template 1. A mold cavity is formed between the two templates for forming a glass lifter when the male template 6 and the female template 7 are buckled up and down.

[0046] Referring Figures 7-12 to this, the slider shoveling mechanism 5 mainly includes components such as a wear-resistant plate 54, an outer slider 51, an inner slider 53, and a slider pressing strip 52. A smaller groove is also provided in the fixing groove 402, and the wear-resistant plate 54 is fixed in the groove by bolts. The upper surface of the wear-resistant plate 54 is flush with the bottom surface of the fixing groove 402. Two slider pressing strips 52 are provided, respectively fixed to both sides of the wear-resistant plate 54 by bolts, and a certain gap is left between the wear-resistant plate 54 and the slider pressing strip 52. Since the cross-sectional shape of the outer slider 51 is similar to a "convex" shape, both sides of the outer slider 51 can be slidably connected to the gap between the wear-resistant plate 54 and the slider pressing strip 52 horizontally;

[0047] Referring Figure 13A fixing member 63 is provided on each side of the wear-resistant plate 54, and the fixing member 63 is located approximately in the middle of the wear-resistant plate 54. The fixing member 63 is fixedly connected to the wear-resistant plate 54 by bolts. A limiting member 64 is provided on the fixing member 63. The upper middle part of the limiting member 64 protrudes upward to form a limiting protrusion 641. The cross-sectional shape of the limiting protrusion 641 is similar to a triangle. At the same time, two limiting grooves 511 are opened at both ends of the bottom of the outer slider 51. The two inner walls of 511 are inclined, which makes the cross-sectional shape of the limiting groove 511 triangular. When the outer slider 51 slides horizontally along the wear-resistant plate 54, the limiting protrusion 641 is embedded in the limiting groove 511 at the bottom of the outer slider 51, and the outer slider 51 will stop sliding. This can limit the forward and backward sliding distance of the outer slider 51. Near the tail end of the wear-resistant plate 54, a limiting screw 55 is also provided on the rotating plate 4. When the tail end of the outer slider 51 moves to the position of the limiting screw 55, it will stop.

[0048] Since the limiting protrusion 641 has a certain height, the gap between the wear-resistant plate 54 and the slider pressure strip 52 should be slightly larger than the vertical dimension of the protrusions on both sides of the outer slider 51, so as to leave a certain space for the upper and lower movement of the outer slider 51.

[0049] like Figure 13 , Figure 14 and Figure 19 As shown, the outer slider 51, the inner slider 53, and the wear-resistant plate 54 are all provided with through holes that run vertically through the top and bottom. The outer slider 51 is also provided with a through hole that runs horizontally from front to back. The inner slider 53 is installed in the through hole in the horizontal direction of the outer slider 51. The cross-sectional shape of the through hole is "convex" shaped, which can limit the vertical position of the inner slider 53 so that the inner slider 53 can slide horizontally along the outer slider 51.

[0050] refer to Figure 14 , Figure 16 , Figure 17 , Figure 19 The left and right side walls of the through hole on the outer slider 51 are respectively a vertical plane and an inclined plane. The inner wall of the through hole on the inner slider 53 near the mother template 7 is also an inclined plane, and a sliding block 531 protruding outward is provided on the inclined plane. The side of the sliding block 531 is also an inclined plane. At the same time, the left and right sides of the first shovel 8 and the second shovel 11 are also provided with vertical planes and sliding inclined planes 801, so that when the first shovel 8 and the second shovel 11 pass through the outer slider 51, the inner slider 53 and the wear-resistant plate 54 from top to bottom, the sliding inclined plane 801 of the first shovel 8 can cooperate with the inclined plane of the sliding block 531 to control the inner slider 53 to slide horizontally along the outer slider 51 towards the mother template 7. When the vertical plane on the left side of the first shovel 8 contacts the left side wall of the through hole on the outer slider 51, it will stop moving downward, and the inner slider 53 has slid to the designated position.

[0051] Similarly, when the second shovel 11 moves downwards, the cooperation of the inclined surfaces will also cause the inner slider 53 to slide along the outer slider 51 towards the mother template 7. The difference is that a sliding groove 111 is also provided on the sliding inclined surface 801 of the second shovel 11. This sliding groove 111 is vertically continuous. When the second shovel 11 moves downwards, the sliding block 531 on the inner slider 53 will embed into the sliding groove 111 and slide up and down along the groove 111, thereby driving the inner slider 53 to slide horizontally. However, in this way, the distance the inner slider 53 slides controlled by the second shovel 11 is shorter than the distance the inner slider 53 slides controlled by the first shovel 8. This is a key design point, as detailed below. Figure 9 and Figure 12 As shown.

[0052] refer to Figure 16 and Figure 17 The structure and shape of the first-shot shovel 8 and the second-shot shovel 11 are different. The lower end of the first-shot shovel 8 is somewhat similar to a right angle, while the lower end of the second-shot shovel 11 is somewhat similar to a parallelogram. By changing the structure of the first-shot shovel 8 and the second-shot shovel 11, the molding of different glue positions in the first and second shots can be achieved.

[0053] like Figure 18 As shown, an inner insert 10 is fixed at the front end of the inner slider 53. A semi-circular through groove 101 is provided on one side of the inner insert 10, which runs vertically through the inner slider 53. At the same time, an insertion hole 534 is provided on the inner slider 53, and a pin 62 is provided in the insertion hole 534. The inner insert 10 and the insertion hole 534 are staggered. After the rear end of the inner insert 10 is horizontally inserted into the inner slider 53, the pin 62 is inserted into the insertion hole 534. The pin 62 will pass through the semi-circular through groove 101 on the inner insert 10. In this way, the inner insert 10 cannot move back and forth and is fixed at the front end of the inner slider 53. The advantage of this design is that the inner insert 10 can be easily removed and the insert can be quickly replaced.

[0054] An outer insert 9 is bolted to the front end of the outer slider 51. An inner insert 10 is interlocked with the outer insert 9. The outer insert 9 is embedded into the cavity formed between the female template 7 and the male template 6, and cooperates with the female template 7 and the male template 6 to form the product. The inner insert 10 at the front end of the inner slider 53 is inserted into the cavity to form a round hole in the hard plastic part during molding. Since the front end cross-section of the inner insert 10 is convex, the formed round hole is stepped. The hole is created using a first-shot spatula 8. Since the second-shot spatula 11 controls the inner insert 10 to move a shorter distance into the outer insert 9, the distance the inner insert 10 is inserted into the round hole of the hard plastic part is also shorter. This shorter distance is used for the molding of the soft plastic part of the product. The soft plastic part will fill the space in the round hole and finally form the product. When the soft plastic part is formed, the second-shot spatula 11 can precisely control the movement distance of the inner insert 10, which can effectively improve the quality of the product after molding.

[0055] like Figure 8 and Figure 11 As shown, two buffer springs 58 are provided between the outer insert 9 and the inner slider 53. One end of the buffer spring 58 is fixed to the inner slider 53. At the same time, two circular grooves are also provided at the opposite position of the rear end of the outer insert 9. The other end of the buffer spring 58 is embedded in the circular groove. The depth of the circular groove is consistent with the length of the buffer spring 58 after compression. When the inner slider 53 slides, the buffer spring 58 will be compressed by force, which plays a buffering role and prevents the inner slider 53 from damaging the outer insert 9 due to excessive force. When the inner slider 53 contacts the outer insert 9, the buffer spring 58 has been completely compressed and hidden in the circular groove. In this way, the inner slider 53 and the outer insert 9 will have rigid static contact, indicating that the inner insert 10 has moved to the designated position for subsequent product molding.

[0056] like Figure 8 As shown, a slot is provided on each side of the outer sliding block 531, and a slider movable pin 59 and a spring pressure plate 56 are provided in the slot. One end of the spring pressure plate 56 is fixed to the outer slider 51 by bolts. A buffer spring 58 is provided between the spring pressure plate 56 and the slider movable pin 59. The two ends of the buffer spring 58 are fixedly connected to the spring pressure plate 56 and the slider movable pin 59 respectively. The slider movable pin 59 is inserted into the outer slider 51, and the other end is inserted into the through hole of the outer slider 51.

[0057] refer to Figure 16 and Figure 17The two sides of the first shovel 8 are recessed inward to form a clearance area 802. This way, when the first shovel 8 slides up and down, the sliding block pin 59 will not affect the sliding of the first shovel 8. On both sides of the second shovel 11, there is a diagonally distributed guide groove 112. When the second shovel 11 slides up and down, the sliding block pin 59 is embedded in the guide groove 112 under the action of the buffer spring 58 and abuts against the second shovel 11. The sliding block pin 59 will slide along the guide groove 112, which will drive the outer slider 51 to slide horizontally. When the second shovel 11 moves upward during demolding, the outer slider 51 will slide backward with the cooperation of the sliding block pin and the guide groove 112, thereby driving the outer insert 9 and the inner insert 10 to exit the cavity formed between the male mold plate 6 and the female mold plate 7, so that the male mold plate 6 and the female mold plate 7 can open the mold and take out the molded product.

[0058] like Figure 8 and Figure 11 As shown, a limiting pin 61 and a headless screw 57 are provided on both sides of the outer slider 51. The tail end of the headless screw is fixedly connected to the limiting pin 61, and the headless screw 57 is threadedly connected to the outer slider 51. An elongated hole 533 is provided at the rear end of both sides of the inner slider 53. The elongated holes 533 are distributed along the sliding direction of the inner slider 53. The limiting pin 61 can be inserted into the elongated hole 533, and the depth of the limiting pin 61 inserted into the elongated hole 533 can be controlled by the headless screw 57. When the inner slider 53 slides horizontally, the sliding distance of the inner slider 53 can be controlled by the cooperation between the limiting pin 61 and the elongated hole 533.

[0059] refer to Figure 19 Several semi-circular grooves 532 are provided on the outer surfaces of both sides of the inner slider 53. The semi-circular grooves 532 are arranged in a rectangular array. At the same time, headless screws 57 and ball screws 60 are provided on both sides of the outer slider 51. The headless screws 57 are threaded to the outer slider 51 and fixedly connected to the ball screws 60. The ball screws 60 are composed of springs, steel balls, and housings. Under the action of the springs, the steel balls will abut against the semi-circular grooves 532 on the surface of the inner slider 53.

[0060] After the first and second shovels 8 and 11 are withdrawn from the slider base mechanism 5, in order to prevent the inner slider 53 from sliding randomly and causing a change in position, the inner slider 53 can be positioned by the ball screws 60 on both sides of the outer slider 51 to prevent the inner slider 53 from moving randomly.

[0061] The rotating plate 4 is equipped with 16 sliding shovel base mechanisms. Half of them are used with the first-shot shovel 8 for the first-shot molding of the hard rubber part, and the other half are used with the second-shot shovel 11 for the second-shot molding of the soft rubber part. Since the upper ends of the first-shot shovel 8 and the second-shot shovel 11 are fixedly connected to the upper template 1 by bolts, when the upper template 1 moves down during operation, it will drive the first-shot shovel 8 and the second-shot shovel 11 to insert into the corresponding sliding shovel base mechanisms 5 at both ends of the rotating plate 4, controlling the inner insert 10 to be horizontally inserted into the outer insert 9 by a certain distance. The inner insert controlled by the first-shot shovel 8 and the second-shot shovel 11... The moving distance of 10 is different. After the first injection molding is completed, the upper mold plate 1 moves up, and the first injection spade 8 and the second injection spade 11 exit the slider spade base mechanism 5. During the exit process, the second injection spade 11 will drive the inner slider 53 and the outer slider 51 to move backward together. The outer insert 9 and the inner insert 10 exit from the cavity between the male mold plate 6 and the female mold plate 7. Then, the base 3 is rotated through the rotating shaft 12, and the two ends of the rotating plate 4 are swapped and rotated 180°. Then the upper mold plate 1 moves down, and the first injection spade 8 and the second injection spade 11 are inserted into the corresponding slider spade base mechanism 5 again, and the mold is closed and injection is performed again.

[0062] In other words, this method allows for the direct injection molding of the soft plastic portion without altering the position of the hard plastic portion. Furthermore, the depth of the soft plastic portion injected into the circular hole on the hard plastic portion can be precisely controlled, eliminating the need for mold disassembly. This achieves the existing requirements by merging the conventional design of two independent slider mechanisms in the front and rear molds into a single design with an outer slider 51 and an inner slider 53. The outer slider 51 and inner slider 53 are driven by a mechanical shovel-based drive system designed for mold opening and closing, i.e., driven by a first-shot shovel 8 and a second-shot shovel 11. The first and second shots do not interfere with each other, saving on mold opening costs and significantly improving product production efficiency and injection quality.

[0063] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. An injection mold for molding products with different shapes in one-shot and two-shot processes, comprising an upper mold plate (1), a rotating plate (4), and a lower mold plate (2), wherein the lower mold plate (2) is provided with a receiving groove for accommodating the rotating plate (4), and at least one mounting groove (401) for installing a female mold plate (7) is provided at each of the two ends of the upper part of the rotating plate (4), and at least one mounting groove (401) for installing a male mold plate (6) is provided at each of the two ends of the bottom of the upper mold plate (1), wherein the male mold plate (6) and the female mold plate (7) are interlocked and formed between the male mold plate (6) and the female mold plate (7) to form a cavity for product molding, characterized in that, At least one fixing groove (402) is provided at each end of the rotating plate (4). The fixing groove (402) is located on one side of the mounting groove (401) on the rotating plate (4). A sliding shovel base mechanism (5) is provided in each fixing groove (402). At least one first-shot shovel (8) and at least one second-shot shovel (11) are respectively provided at the corresponding positions at both ends of the bottom of the upper template (1). The first-shot shovel (8) and the second-shot shovel (11) are respectively corresponding to the two sliding shovel base mechanisms (5). The upper template (1) can drive the first-shot shovel (8) and the second-shot shovel (11) to move up and down. The slider base mechanism (5) includes an outer slider (51) that can slide horizontally, an inner slider (53) that is horizontally connected to the inner side of the outer slider (51), and two slider pressure strips (52) respectively disposed on both sides of the outer slider (51). The front end of the outer slider (51) is fixed with an outer insert (9), and the front end of the inner slider (53) is fixed with an inner insert (10). The front end of the outer insert (9) can extend into the cavity formed between the male template (6) and the female template (7). The inner insert (10) is horizontally inserted into the outer insert (9) and can be inserted into the cavity formed between the male template (6) and the female template (7). Both the outer slider (51) and the inner slider (53) have through holes that extend vertically and allow the first shovel (8) and the second shovel (11) to move vertically through each other. The inner wall of the inner slider (53) near the inner insert (10) is provided with a sliding block (531) with an inclined surface. Both the first shovel (8) and the second shovel (11) have a sliding inclined surface (801) on one side. The sliding inclined surface (801) of the second shovel (11) is provided with a sliding groove (111). The sliding block (531) on the inner slider (53) can be embedded in the sliding groove (111). Before injection molding, during the downward movement of the injection spatula (8), the sliding inclined surface (801) on the injection spatula (8) can cooperate with the inclined surface on the sliding block (531) on the inner side of the inner slider (53), controlling the inner slider (53) to slide horizontally relative to the outer slider (51), and driving the inner insert (10) to insert into the outer insert (9) and move an appropriate distance; Before injection molding, during the downward movement of the two-shot spatula (11), the sliding block (531) on the inner side of the inner slider (53) can slide up and down along the sliding groove (111) on the two-shot spatula (11), and can drive the inner insert (10) at the front end of the inner slider (53) to move a suitable distance into the outer insert (9). The distance that the two-shot spatula (11) drives the inner insert (10) to move into the outer insert (9) is less than the distance that the one-shot spatula (8) drives the inner insert (10) to move into the outer insert (9). During the upward movement of the two-shot spatula (11), it can drive the inner slider (53) and the inner slider (53) to slide horizontally together, and can control the inner insert (10) and the outer insert (9) to exit from the cavity formed between the male mold plate (6) and the female mold plate (7).

2. The injection mold for forming products with different glue positions in one-shot and two-shot molding processes according to claim 1, characterized in that, A wear-resistant plate (54) is fixedly installed in the fixed groove (402). The slider pressure strip (52) is located on both sides of the wear-resistant plate (54) and is fixedly connected to the rotating plate (4) by bolts. The two sides of the outer slider (51) are horizontally slidably connected to the gap formed between the wear-resistant plate (54) and the slider pressure strip (52).

3. The injection mold for forming products with different glue positions in one-shot and two-shot molding according to claim 2, characterized in that, At least one fixing member (63) is provided on the wear-resistant plate (54), and a limiting member (64) is provided on the fixing member (63). The middle of the limiting member (64) protrudes upward to form a limiting protrusion (641) with a triangular cross-sectional shape. At least one limiting groove (511) that cooperates with the limiting protrusion (641) is provided at each end of the bottom of the outer slider. The two side walls of the limiting groove (511) are inclined surfaces.

4. The injection mold for forming products with different glue positions in one-shot and two-shot molding processes according to claim 1, characterized in that, Both sides of the outer slider (51) are provided with spring pressure plates (56) and slider movable pins (59). A buffer spring (58) is provided between the spring pressure plates (56) and the slider movable pins. The slider movable pins (59) are telescopically slidably connected to the outer slider (51).

5. The injection mold for forming products with different glue positions in one-shot and two-shot molding processes according to claim 4, characterized in that, Both sides of the shovel (8) are recessed inward to form a clearance area (802), and the sliding pin (59) can be inserted into the clearance area (802) without affecting the up and down movement of the shovel (8). Each of the two shovels (11) has an inclined guide groove (112) on both sides, and the slider movable pin (59) can be inserted into the guide groove (112).

6. The injection mold for forming products with different glue positions in one-shot and two-shot molding according to claim 1, characterized in that, The inner slider (53) has several semi-circular grooves (532) arranged in an array on both sides of its outer wall. The outer slider (51) has a headless screw (57) and a ball screw (60) on both sides. The headless screw (57) is connected to the ball screw (60), and the front end of the ball screw (60) abuts against the semi-circular grooves (532) on the outer wall of the inner slider (53).

7. The injection mold for forming products with different glue positions in one-shot and two-shot molding according to claim 1, characterized in that, The inner slider (53) has an elongated hole (533) at each of its two rear ends. The outer slider (51) has a headless screw (57) and a limiting pin (61) on both sides. The headless screw (57) is connected to the limiting pin (61), and the limiting pin (61) can be inserted into the elongated hole (533) on the outer wall of the inner slider (53).

8. The injection mold for forming products with different glue positions in one-shot and two-shot molding according to claim 1, characterized in that, The inner slider (53) is provided with a buffer spring (58) at its front end. The outer wall of the outer insert (9) is provided with a circular groove for accommodating the buffer spring (58). The depth of the circular groove is consistent with the length of the buffer spring (58) after compression.

9. An injection mold for molding products with different glue positions in one-shot and two-shot processes according to claim 1, characterized in that, The upper part of the inner slider (53) is provided with a socket (534) that is offset from the inner insert (10). A pin (62) is provided in the socket (534). The inner insert (10) is provided with a semi-circular through groove (101) that runs vertically through the inner part. The pin (62) can be inserted into the through groove (101) on the inner insert (10).

10. An injection mold for molding products with different glue positions in one-shot and two-shot processes according to claim 1, characterized in that, The rotating plate (4) is provided with a limiting screw (55) for limiting the sliding distance of the outer slider (51).

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