A multi-mechanism fully automatic production injection mold

Abstract

The invention discloses a multi-mechanism fully automatic production injection mold, comprising a bracket, a front template, a rear template, a first core pulling mechanism, a second core pulling mechanism and a third core pulling mechanism. A front mold core in the front template and a rear mold core in the rear template cooperate to form a mold cavity. The first core pulling mechanism is located on both sides of the mold cavity. The second core pulling mechanism comprises an ejector plate 1 and an inclined ejector core pulling column. The top of the inclined ejector core pulling column is located in the mold cavity. The third core pulling mechanism comprises an ejector plate 2, an ejector bottom plate, a plurality of ejector blocks and a cylinder. The invention firstly completes the first core pulling through the first core pulling mechanism, and then pushes the ejector bottom plate, the ejector plate 2 and the ejector plate 1 upwards through the cylinder, so that the inclined ejector core pulling column and the ejector block push the product out of the mold cavity in batches, thereby realizing fully automatic demoulding and improving efficiency.

Description

Technical Field

[0001] The invention relates to the field of injection molds, and in particular to a multi-mechanism fully automatic production injection mold. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into complex-shaped parts. Injection molding is suitable for mass production and complex-shaped products and other molding and processing fields.

[0003] However, when the product structure angles are complex, both the front and rear demolding require double-angle demolding, otherwise the product will be damaged, resulting in poor product appearance and failure to mass produce normally. Manual core pulling is difficult to achieve product quality and ensure production efficiency and quality stability. In response to the above problems, a solution is proposed below. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-mechanism fully automatic production injection mold, which has the advantage of being able to take out the molded product from the mold cavity through multiple core pulling operations.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A multi-mechanism fully automatic production injection mold, including A bracket, the bracket comprising a bottom plate and two square irons, the two square irons being fixed on both sides of the end surface of the bottom plate; A front template, wherein a front mold core is provided in the front template; A rear mold plate, wherein a rear mold core is provided in the rear mold plate, and the rear mold core cooperates with the front mold core to form a mold cavity, and a set of the front mold core and the rear mold core has two mold cavities, and a plurality of injection tubes are provided in the front mold plate and the rear mold plate to perform injection molding in the two mold cavities; A first core-pulling mechanism, the first core-pulling mechanism includes two groups of slider structures, the two groups of slider structures are respectively matched with two mold cavities, the slider structure includes a slider 1 and a slider 2, the slider 1 and the slider 2 are respectively against the two sides of the mold cavity, the slider 1 and the slider 2 are each provided with a spring 1, the spring 1 is used to push the slider 1 and the slider 2 away from the rear mold core, the slider 1 and the slider 2 are each provided with an inclined guide column hole, the lower end surface of the front template is fixedly provided with four inclined guide columns, the inclined guide columns are plug-fitted with the inclined guide column holes; A second core pulling mechanism, the second core pulling mechanism is located above the bottom plate and between two square irons, the second core pulling mechanism comprises a first ejector plate and an inclined ejector core pulling column, the first ejector plate is located directly below the rear template; There are four inclined top core-pulling pins, the top ends of which pass through the rear mold plate and are located in the mold cavity. There are two inclined top core-pulling pins in each mold cavity. The inclined top core-pulling pins are arranged obliquely, and the two inclined top core-pulling pins are respectively located on both sides of the mold cavity. The lower ends of the inclined top core-pulling pins are fixedly connected to the ejector plate through an inclined column seat. A third core-pulling mechanism, the third core-pulling mechanism is located above the bottom plate and between two square irons, the third core-pulling mechanism comprises a second ejector plate, an ejector bottom plate, a plurality of ejector blocks and a cylinder, the second ejector plate is located on the upper end surface of the ejector bottom plate and is fixedly connected to the ejector bottom plate; The cylinder is embedded in the bottom plate, the output shaft of the cylinder is arranged upward, and the output shaft of the cylinder is fixedly connected to the ejector bottom plate, a plurality of ejector blocks are fixed on the ejector plate 2, and the upper end of the ejector block passes through the rear template and is located in the mold cavity, and the ejector block is used to eject the product.

[0006] Preferably, the upper end surface of the rear template is provided with four slideways, and the four sliders are respectively located in the four slideways. Slider strips are provided on both sides of the slideways. The two sides of slider one and slider two are respectively located under the slider strips of the slideways. Limit blocks are also provided in the slideways, and the limit blocks are used to prevent slider one and slider two from leaving the slideways.

[0007] Preferably, four return needle springs are arranged below the rear template, the four return needle springs longitudinally penetrate ejector plate 1 and ejector plate 2, and are fixedly connected to the ejector bottom plate, the ejector plate 1 is slidably matched with the return needle springs, and the return needle springs are used to reset the ejector bottom plate.

[0008] Preferably, two long vertical guide columns and two short vertical guide columns are arranged in the bracket, the upper ends of the long vertical guide columns are fixedly connected to the lower end surface of the rear template, the lower ends of the long vertical guide columns are fixedly connected to the bottom plate through fasteners, and the ejector plate 1, the ejector plate 2 and the ejector bottom plate are all provided with guide holes 1 that match the long vertical guide columns, and are slidably connected to the long vertical guide columns through the guide holes 1; The upper end of the short vertical guide column is fixedly connected to the lower end surface of the ejector plate 1, and the lower end of the short vertical guide column is fixedly connected to the base plate through a fastener. The ejector plate 2 and the ejector base plate are both provided with a guide hole 2 that cooperates with the short vertical guide column, and are slidably connected to the short vertical guide column through the guide hole 2.

[0009] Preferably, two upper guide blocks are symmetrically arranged on both sides of the rear template, the two upper guide blocks are arranged vertically and in parallel, the position between the two upper guide blocks is a butting groove, and the inner side surface of the lower end of the upper guide block is an inclined surface; Stop blocks are symmetrically arranged on both sides of the ejector plate 1, and a stop groove is arranged on the side wall of the ejector plate 1. The stop block is located in the stop groove and is slidably connected with the stop groove. A second spring is arranged on the side of the stop block located in the stop groove, and the second spring is used to push one side of the stop block out of the stop groove. The upper end surface of the side of the stop block located outside the stop groove is an inclined surface, and the upper guide block pushes the stop block into the stop groove through the cooperation of the inclined surface. A lower guide block is symmetrically fixed on both sides of the ejector base plate, the lower guide block is located directly below the abutment groove, and the width of the lower guide block is the same as the width of the abutment groove. The inner side of the lower guide block is located below the stop block, and the stop block is used to press against the lower guide block to maintain the distance between the ejector plate one and the ejector plate two.

[0010] Preferably, four mold guide pins are fixedly provided on the rear template, four mold guide holes are opened on the front template, the mold guide pins are plugged into the mold guide holes, and the front template and the rear template are positioned by the mold guide pins.

[0011] Preferably, a limit switch is fixedly provided on the side wall of the bottom plate, and one end of the limit switch abuts against the lower end surface of the ejector bottom plate.

[0012] A method for using a multi-mechanism fully automatic production injection mold comprises the following steps: S1: Injection molding: the front mold plate and the rear mold plate are molded together, the inclined guide pin is inserted into the inclined guide pin hole, the four sliders are gathered around the mold cavity, and then injection molding is performed into the mold cavity, and the product is obtained after cooling; S2: Initial core pulling, the front template is separated from the rear template upwards, and the four sliders move to the side away from the mold cavity under the action of the inclined guide pillars and the built-in spring 1, so that the four sliders are separated from the undercut position of the product, completing the first core pulling; S3: Second core pulling, the cylinder is started, driving the ejector base plate and ejector plate 2 to move upward, and the ejector base plate and ejector plate 2 will push several ejector blocks to move upward; The two lower guide blocks will abut against the lower end surface of the stop block, pushing the stop block and the ejector plate to move upward, and the ejector plate will drive the inclined ejector core column to move upward; The inclined core-pulling column and the ejector block work together to eject the product from the mold cavity and realize the second core-pulling. S4: After three core pullings, the cylinder continues to push the ejector base plate and ejector plate 2 upward, and the ejector block also moves upward with them; At this time, the upper end of the stop block is pushed upward into the stop groove by the two upper guide blocks, so that the stop block no longer blocks the upper end of the lower guide block, and the lower guide block moves upward with the ejector bottom plate and the ejector plate 2, and the ejector plate 1 no longer moves upward, that is, the inclined ejector core pulling column no longer moves upward; At this time, the top block will drive the product to continue to move upward, thereby separating the product from the inclined top core pulling column and completing the third core pulling.

[0013] The beneficial effects of the present invention are as follows: the mold develops a double-angle core-pulling mechanism, the front mold is set with an oblique core-pulling mechanism, corresponding to the oblique demoulding of the front mold product, and the mold opening sequence ensures that the core-pulling mechanism is opened first, ensuring that the product is demoulded smoothly according to the designed demoulding angle, achieving fully automatic production, reducing enterprise management costs, and breaking through management technical difficulties. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment; Figure 2 This is a schematic diagram of the structure of the first core-pulling mechanism used to illustrate the embodiment; Figure 3 for Figure 2 Enlarged view of area A in the middle; Figure 4 This is a schematic diagram of the structure of the second core-pulling mechanism used in the embodiment; Figure 5 This is a schematic diagram of the structure of the third core-pulling mechanism used in the embodiment; Figure 6 This is a schematic diagram of the structure of the front template used to show the embodiment; Figure 7 A cross-sectional view of an embodiment.

[0015] Reference numerals: 1, bracket; 11, bottom plate; 12, square iron; 13, long vertical guide column; 14, short vertical guide column; 15, limit switch; 16, slow-down column; 2, front template; 21, front mold core; 22, inclined guide column; 23, mold guide hole; 3, rear template; 31, rear mold core; 32, slideway; 33, slider strip; 34, limit block; 35, return needle spring; 36, upper guide block; 3 7. Abutment groove; 38. Mould closing guide pin; 4. First core pulling mechanism; 41. Slider 1; 42. Slider 2; 43. Oblique guide pin hole; 5. Second core pulling mechanism; 51. Ejector plate 1; 52. Oblique ejector core pulling pin; 53. Oblique pin seat; 54. Stop block; 6. Third core pulling mechanism; 61. Ejector plate 2; 62. Ejector bottom plate; 63. Ejector block; 64. Cylinder; 65. Lower guide block; 7. Product. DETAILED DESCRIPTION

[0016] The following is only a preferred embodiment of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom" and "top", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0017] like Figures 1 to 7 As shown, a multi-mechanism fully automatic production injection mold includes a bracket 1, a front template 2, a rear template 3, a first core pulling mechanism 4, a second core pulling mechanism 5 and a third core pulling mechanism 6. The bracket 1 is the bottom structure of the entire mold, and mainly plays the role of supporting and limiting other components. In the present invention, the bracket 1 includes a bottom plate 11 and two square irons 12, and the two square irons 12 are fixed on both sides of the upper end surface of the bottom plate 11. The range limited by the height of the square iron 12 itself is the installation area of ​​the second core pulling mechanism 5 and the third core pulling mechanism 6.

[0018] The third core-pulling mechanism 6 includes an ejector plate 61, an ejector bottom plate 62, a plurality of ejector blocks 63 and a cylinder 64. The output shaft of the cylinder 64 is arranged upward, the cylinder 64 body is embedded in the bottom plate 11, and the output shaft of the cylinder 64 is fixedly connected to the ejector bottom plate 62. The ejector plate 61 is fixed to the upper end surface of the ejector bottom plate 62. The ejector plate 61 and the ejector bottom plate 62 are fixedly connected by fasteners such as screws. A plurality of ejector blocks 63 are fixed to the ejector plate 61. When the cylinder 64 drives the ejector plate 61 and the ejector bottom plate 62 to move, the ejector plate 61 will drive the plurality of ejector blocks 63 to move synchronously.

[0019] The second core-pulling mechanism 5 includes a pin plate 1 51 and an inclined pin-pulling column 52. The pin plate 1 51 is located directly above the pin plate 2 61, and there is a gap between the pin plate 2 61. Four inclined column seats 53 are fixed on the upper end surface of the pin plate 1 51, and four inclined pin-pulling columns 52 are also provided. The lower ends of the four inclined pin-pulling columns 52 are plugged into the upper ends of the inclined column seats 53 and are fixedly connected to the inclined column seats 53. When the pin plate 1 51 moves, the four inclined pin-pulling columns 52 will be driven to move synchronously.

[0020] Stop grooves are symmetrically arranged on the side walls of both sides of the ejector plate 51, and stop blocks 54 and spring 2 are arranged in both stop grooves. Spring 2 is fixed at the deepest part of the stop groove and is used to push one end of the stop block 54 to the stop groove so that it is exposed on both sides of the ejector plate 51. A lower guide block 65 is symmetrically fixed on both sides of the ejector bottom plate 62. The lower guide block 65 is vertically arranged, and the lower end of the lower guide block 65 is fixed to the side walls of the ejector plate 51 and the ejector bottom plate 62 by fasteners such as screws. In the initial state, one side of the top of the lower guide block 65 just abuts against the lower end surface of the stop block 54.

[0021] The bottom surface of the stop block 54 and the top surface of the lower guide block 65 are both planes, and both are rigid objects. Therefore, when the lower guide block 65 moves upward with the ejector bottom plate 62 and the ejector plate 2 61, it will push the stop block 54 to move upward, so that the stop block 54 drives the ejector plate 1 51 to move upward. The length of the stop block 54 exposed outside the stop groove is much smaller than the length of the stop block 54 located in the stop groove. Therefore, when the stop block 54 is pushed upward by the lower guide block 65, the stop block 54 will not move out of the stop groove. The opening shape of the stop groove is the same as the cross-sectional shape of the stop block 54, and the sizes of the two are also similar, so that the stop block 54 can only move in the direction of the spring elasticity in the stop groove and cannot shake in other directions.

[0022] The rear template 3 is fixed on the upper ends of the two square irons 12 and is fixedly connected to the two square irons 12. The ejector plate 1 51, the ejector plate 2 61 and the ejector bottom plate 62 are all located below the rear template 3. A rear mold core 31 is provided in the rear template 3, and the rear mold core 31 cooperates with the front mold core 21 at the lower end surface of the front template 2 to form a mold cavity. The top ends of a plurality of ejector blocks 63 and four inclined ejector core-pulling columns 52 all pass through the rear template 3 and are located in the mold cavity. In this design, the upper end surface of the rear template 3 can form two mold cavities, and a plurality of ejector blocks 63 and four inclined ejector core-pulling columns 52 are also evenly distributed in the two mold cavities. A plurality of injection tubes are provided in the front template 2 and the rear template 3, and the two mold cavities can be injection molded through the injection tubes.

[0023] Two upper guide blocks 36 are symmetrically arranged on both sides of the rear template 3. The two upper guide blocks 36 are arranged vertically and in parallel. The position between the two upper guide blocks 36 is the abutment groove 37. The lower guide block 65 is located directly below the abutment groove 37, and the width of the lower guide block 65 is the same as the width of the abutment groove 37. When the stop block 54 is completely retracted into the stop groove, the upper end of the lower guide block 65 can be inserted into the abutment groove 37 and abut against the uppermost end of the abutment groove 37.

[0024] The inner side surface of the lower end of the upper guide block 36 is an inclined surface, and the upper end surface of the stop block 54 on the side outside the stop groove is an inclined surface. After the inclined surface of the lower end of the upper guide block 36 is fitted with the inclined surface of the upper end surface of one side of the stop block 54, when the stop block 54 continues to move upward, the upper guide block 36 can push the stop block 54 into the stop groove.

[0025] When the lower guide block 65 pushes the stop block 54 to just contact the lower end surface of the upper guide block 36, the top blocks 63 and the inclined top core-pulling column 52 move upward by the same displacement, and the height difference between the top ends of the two is the same as the height difference in the initial state, and both move upward out of the rear mold cavity. At this time, the second core-pulling state is completed.

[0026] When the stop block 54 is completely inserted into the stop groove, the lower guide block 65 can continue to move upward until it is inserted into the stop groove 37. At this time, the upper end surface of the second ejector plate 61 is in contact with the lower end surface of the first ejector plate 51, and the top ends of the ejector blocks 63 move upward to a position higher than the top end of the inclined ejector core pulling column 52, and the height difference between the two increases. At this time, the third core pulling is completed.

[0027] Four return needle springs 35 are arranged below the rear template 3. The four return needle springs 35 longitudinally penetrate the ejector plate 1 51 and the ejector plate 2 61, and are fixedly connected to the ejector bottom plate 62. The return needle spring 35 in the present application is a retractable central axis and a spring surrounding the outside of the central axis, and the central axis can keep the spring longitudinally retractable. The ejector plate 1 51 and the return needle spring 35 are slidably matched. After the third core pulling is completed, the cylinder 64 drives the ejector bottom plate 62 to move downward. At this time, the four return needle springs 35 will also generate a downward elastic force on the ejector bottom plate 62, so that it returns to its initial position. The ejector plate 1 51 will slowly descend due to the four slow-down columns 16 arranged on the bottom plate 11, so that the stop block 54 will pop out of the stop groove and be placed on the upper end of the lower guide block 65 again.

[0028] The slow-descent column 16 in the present design is a cylinder provided with a plurality of annular grooves, which are evenly arranged along the length direction of the cylinder. A slow-descent pad made of a material such as silicone is arranged in the slow-descent hole corresponding to the ejector plate 51. When the ejector plate 51 moves downward under the action of gravity, the slow-descent pad will slowly slide down on the surface of the slow-descent column 16, so that a distance is opened between the ejector plate 51 and the ejector plate 2 61.

[0029] The first core-pulling mechanism 4 includes two sets of slider structures, which are respectively matched with two mold cavities. Each set of slider structures includes a slider 1 41 and a slider 2 42. The slider 1 41 and the slider 2 42 have the same structure except for their own shapes and sizes. The slider 1 41 and the slider 2 42 are respectively against the two sides of the mold cavity. The slider 1 41 and the slider 2 42 are both provided with a spring 1, which is used to push the slider 1 41 and the slider 2 42 away from the rear mold core 31.

[0030] When the slider 1 41 and the slider 2 42 are in contact with the rear mold core 31, they also constitute a part of the boundary of the rear mold core 31. The top ends of the plurality of top blocks 63 and the top ends of the inclined top core pulling pins 52 also constitute the structure of the rear mold core 31 in the initial state.

[0031] Slider 1 41 and slider 2 42 are both provided with inclined guide post holes 43, and four inclined guide posts 22 are fixedly provided on the lower end surface of the front template 2. When the front template 2 and the rear template 3 are molded together, the four inclined guide posts 22 will be respectively inserted into the four inclined guide post holes 43. Due to the cooperation between the inclined guide posts 22 and the inclined guide post holes 43, when the front template 2 is closer to the rear template 3, slider 1 41 and slider 2 42 will also compress spring 1 and approach the rear mold core 31 until it contacts the rear mold core 31.

[0032] The upper end surface of the rear template 3 is provided with four slideways 32, and the four sliders are respectively located in the four slideways 32. Slider pressure strips 33 are provided on both sides of the slideways 32. The two sides of sliders 1 41 and sliders 2 42 are respectively located under the slider pressure strips 33 of the slideways 32. The pressure strips can limit sliders 1 41 and sliders 2 42 in the slideways 32 so that they can only slide along the length direction of the slideways 32. In order to prevent sliders 1 41 and sliders 2 42 from sliding away and limit their initial positions, a limit block 34 is also provided in the slideway 32. After the front template 2 and the rear template 3 are separated, sliders 1 41 and sliders 2 42 will be pushed by springs 1 to a position against the limit blocks 34, and this position is just enough to allow the four inclined guide posts 22 on the front template 2 to be inserted into the four inclined guide post holes 43.

[0033] In order to ensure that the front template 2 and the rear template 3 are stable during mold closing and mold opening, four mold closing guide pillars 38 are fixed on the rear template 3, and four mold closing guide holes 23 are opened on the front template 2. During mold opening and mold closing, the mold closing guide holes 23 will move along the mold closing guide pillars 38 to prevent the front template 2 and the rear template 3 from offsetting.

[0034] Two long vertical guide columns 13 and two short vertical guide columns 14 are provided in the bracket 1, the upper ends of the long vertical guide columns 13 are fixedly connected to the lower end surface of the rear template 3, and the lower ends of the long vertical guide columns 13 are fixedly connected to the base plate 11 through fasteners, and the ejector plate 1 51, the ejector plate 2 61 and the ejector base plate 62 are all provided with guide holes 1 that cooperate with the long vertical guide columns 13, and are slidably connected to the long vertical guide columns 13 through the guide holes 1; the upper ends of the short vertical guide columns 14 are fixedly connected to the lower end surface of the ejector plate 1 51, and the lower ends of the short vertical guide columns 14 are fixedly connected to the base plate 11 through fasteners, and the ejector plate 2 61 and the ejector base plate 62 are all provided with guide holes 2 that cooperate with the vertical guide columns, and are slidably connected to the short vertical guide columns 14 through the guide holes 2.

[0035] The long vertical guide column 13 and the short vertical guide column 14 are used to limit the moving direction of the ejector plate 1 51, the ejector plate 2 61 and the ejector bottom plate 62 so that they will not deviate to other directions when moving longitudinally and maintain longitudinal movement.

[0036] A limit switch 15 is fixedly arranged on the side wall of the bottom plate 11, and one end of the limit switch 15 abuts against the lower end surface of the ejector bottom plate 62. The limit switch 15 can limit the downward movement position of the ejector bottom plate 62 so that it can move to the initial position.

[0037] A method for using a multi-mechanism fully automatic production injection mold comprises the following steps: S1: Injection molding, the front template 2 and the rear template 3 are molded together, the inclined guide pin 22 is inserted into the inclined guide pin hole 43, the four sliders are gathered around the mold cavity, and then injection molding is performed into the mold cavity, and the product 7 is obtained after cooling; S2: Initial core pulling, the front template 2 is separated upward from the rear template 3, and the four sliders are moved to the side away from the mold cavity under the action of the inclined guide pillar 22 and the built-in spring 1, so that the four sliders are separated from the inverted position of the product 7, completing the first core pulling; S3: Second core pulling, the cylinder 64 is started, driving the ejector base plate 62 and the ejector plate 2 61 to move upward, and the ejector base plate 62 and the ejector plate 2 61 will push a number of ejector blocks 63 to move upward; The two lower guide blocks 65 will abut against the lower end surface of the stop block 54, pushing the stop block 54 and the ejector plate 1 51 to move upward, and the ejector plate 1 51 will drive the inclined ejector core-pulling column 52 to move upward; The inclined core-pulling column 52 and the ejector block 63 work together to eject the product 7 from the mold cavity, thus achieving the second core-pulling operation. S4: After three core pullings, the cylinder 64 continues to push the ejector base plate 62 and the ejector plate 2 61 upward, and the ejector block 63 also moves upward with them; At this time, the upper end of the stop block 54 is pushed upward into the stop groove by the two upper guide blocks 36, so that the stop block 54 is no longer blocked at the upper end of the lower guide block 65, and the lower guide block 65 moves upward with the ejector bottom plate 62 and the ejector plate 2 61, and the ejector plate 1 51 no longer moves upward, that is, the inclined ejector core-pulling column 52 no longer moves upward; At this time, the top block 63 will drive the product 7 to continue to move upward, so that the product 7 is separated from the inclined top core-pulling column 52, and the third core-pulling is completed.

[0038] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-mechanism fully automatic production injection mold, characterized in that: include A bracket (1), the bracket (1) comprising a bottom plate (11) and two square irons (12), the two square irons (12) being fixed on both sides of the upper end surface of the bottom plate (11); A front mold plate (2), wherein a front mold core (21) is provided in the front mold plate (2); A rear mold plate (3), wherein a rear mold core (31) is provided in the rear mold plate (3), wherein the rear mold core (31) cooperates with the front mold core (21) to form a mold cavity, wherein a set of the front mold core (21) and the rear mold core (31) has two mold cavities, and the front mold plate (2) and the rear mold plate (3) are both provided with a plurality of injection tubes to perform injection molding in the two mold cavities; A first core-pulling mechanism (4), the first core-pulling mechanism (4) comprises two groups of slider structures, the two groups of slider structures are respectively matched with two mold cavities, the slider structure comprises a slider one (41) and a slider two (42), the slider one (41) and the slider two (42) are respectively against two sides of the mold cavity, the slider one (41) and the slider two (42) are each provided with a spring one, the spring one is used to push the slider one (41) and the slider two (42) away from the rear mold core (31), the slider one (41) and the slider two (42) are both provided with an inclined guide column hole (43), the lower end surface of the front mold plate (2) is fixedly provided with four inclined guide columns (22), the inclined guide columns (22) are plug-fitted with the inclined guide column holes (43); A second core-pulling mechanism (5), the second core-pulling mechanism (5) is located above the bottom plate (11) and between two square irons (12), the second core-pulling mechanism (5) comprises a first ejector plate (51) and an inclined ejector core-pulling column (52), the first ejector plate (51) is located directly below the rear template (3); Four inclined top core-pulling columns (52) are provided, the top ends of the inclined top core-pulling columns (52) pass through the rear mold plate (3) and are located in the mold cavity, and two inclined top core-pulling columns (52) are arranged in an inclined manner, and the two inclined top core-pulling columns (52) are respectively located on both sides of the mold cavity, and the lower ends of the inclined top core-pulling columns (52) are fixedly connected to the ejector plate (51) through an inclined column seat (53); A third core-pulling mechanism (6), the third core-pulling mechanism (6) is located above the bottom plate (11) and between two square irons (12), the third core-pulling mechanism (6) comprises a second ejector plate (61), an ejector bottom plate (62), a plurality of ejector blocks (63) and a cylinder (64), the second ejector plate (61) is located on the upper end surface of the ejector bottom plate (62) and is fixedly connected to the ejector bottom plate (62); The cylinder (64) is embedded in the bottom plate (11), the output shaft of the cylinder (64) is arranged upward, and the output shaft of the cylinder (64) is fixedly connected to the ejector bottom plate (62), a plurality of ejector blocks (63) are fixed on the ejector plate (61), and the upper ends of the ejector blocks (63) pass through the rear mold plate (3) and are located in the mold cavity, and the ejector blocks (63) are used to eject the product (7).

2. A multi-mechanism fully automatic production injection mold according to claim 1, characterized in that: The upper end surface of the rear template (3) is provided with four slideways (32), and four sliders are respectively located in the four slideways (32). Both sides of the slideways (32) are provided with slider pressure strips (33). Both sides of the slider 1 (41) and the slider 2 (42) are respectively located under the slider pressure strips (33) of the slideways (32). A limit block (34) is also provided in the slideway (32), and the limit block (34) is used to prevent the slider 1 (41) and the slider 2 (42) from escaping from the slideway (32).

3. A multi-mechanism fully automatic production injection mold according to claim 2, characterized in that: Four return needle springs (35) are arranged below the rear template (3). The four return needle springs (35) longitudinally penetrate the ejector plate 1 (51) and the ejector plate 2 (61) and are fixedly connected to the ejector bottom plate (62). The ejector plate 1 (51) and the return needle springs (35) are slidably matched. The return needle springs (35) are used to reset the ejector bottom plate (62).

4. A multi-mechanism fully automatic production injection mold according to claim 1, characterized in that: The bracket (1) is provided with two long vertical guide columns (13) and two short vertical guide columns (14), the upper ends of the long vertical guide columns (13) are fixedly connected to the lower end surface of the rear template (3), the lower ends of the long vertical guide columns (13) are fixedly connected to the bottom plate (11) through fasteners, and the ejector plate 1 (51), the ejector plate 2 (61) and the ejector bottom plate (62) are all provided with guide holes 1 that match the long vertical guide columns (13), and are slidably connected to the long vertical guide columns (13) through the guide holes 1; The upper end of the short vertical guide column (14) is fixedly connected to the lower end surface of the ejector plate (51), and the lower end of the short vertical guide column (14) is fixedly connected to the base plate (11) via a fastener. The ejector plate (61) and the ejector base plate (62) are both provided with a second guide hole that matches the short vertical guide column, and are slidably connected to the short vertical guide column (14) via the second guide hole.

5. A multi-mechanism fully automatic production injection mold according to claim 1, characterized in that: Two upper guide blocks (36) are symmetrically arranged on both sides of the rear template (3), the two upper guide blocks (36) are arranged vertically and in parallel, the position between the two upper guide blocks (36) is a stop groove (37), and the inner side surface of the lower end of the upper guide block (36) is an inclined surface; Stop blocks (54) are symmetrically arranged on both sides of the ejector plate (51), and a stop groove is arranged on the side wall of the ejector plate (51). The stop block (54) is located in the stop groove and is slidably connected to the stop groove. A second spring is arranged on the side of the stop block (54) located in the stop groove, and the second spring is used to push one side of the stop block (54) out of the stop groove. The upper end surface of the side of the stop block (54) located outside the stop groove is an inclined surface, and the upper guide block (36) pushes the stop block (54) into the stop groove through the cooperation of the inclined surface. A lower guide block (65) is symmetrically fixed on both sides of the ejector base plate (62). The lower guide block (65) is located directly below the abutting groove (37), and the width of the lower guide block (65) is the same as the width of the abutting groove (37). The inner side of the lower guide block (65) is located below the stop block (54), and the stop block (54) is used to press against the lower guide block (65) to maintain the distance between the ejector plate 1 (51) and the ejector plate 2 (61).

6. A multi-mechanism fully automatic production injection mold according to claim 1, characterized in that: Four mold clamping guide pillars (38) are fixedly arranged on the rear template (3), and four mold clamping guide holes (23) are opened on the front template (2). The mold clamping guide pillars (38) are plugged into and matched with the mold clamping guide holes (23), and the front template (2) and the rear template (3) are positioned by means of the mold clamping guide pillars (38).

7. A multi-mechanism fully automatic production injection mold according to claim 1, characterized in that: A limit switch (15) is fixedly arranged on the side wall of the bottom plate (11), and one end of the limit switch (15) abuts against the lower end surface of the ejector bottom plate (62).

8. A method for using a multi-mechanism fully automatic production injection mold according to any one of claims 1 to 7, characterized in that: The following steps are included: S1: Injection molding, the front mold plate (2) and the rear mold plate (3) are molded together, the inclined guide pin (22) is inserted into the inclined guide pin hole (43), the four sliders are gathered around the mold cavity, and then injection molding is performed into the mold cavity, and the product (7) is obtained after cooling; S2: Initial core pulling, the front template (2) is separated upward from the rear template (3), and the four sliders are moved to the side away from the mold cavity under the action of the inclined guide pillar (22) and the built-in spring 1, so that the four sliders are separated from the inverted position of the product (7), completing the first core pulling; S3: Second core pulling, the air cylinder (64) is started, driving the ejector base plate (62) and the ejector plate 2 (61) to move upward, and the ejector base plate (62) and the ejector plate 2 (61) will push a plurality of ejector blocks (63) to move upward; The two lower guide blocks (65) will abut against the lower end surface of the stop block (54), pushing the stop block (54) and the ejector plate (51) to move upward, and the ejector plate (51) will drive the inclined ejector core-pulling column (52) to move upward; The inclined core-pulling column (52) and the ejector block (63) work together to eject the product (7) from the mold cavity, thus achieving a second core-pulling operation; S4: After the core is pulled out three times, the cylinder (64) continues to push the ejector base plate (62) and the ejector plate 2 (61) to move upward, and the ejector block (63) also moves upward with them; At this time, the upper end of the stop block (54) is pushed upward into the stop groove by the two upper guide blocks (36), so that the stop block (54) is no longer blocked at the upper end of the lower guide block (65), and the lower guide block (65) moves upward following the ejector bottom plate (62) and the ejector plate 2 (61), and the ejector plate 1 (51) no longer moves upward, that is, the inclined ejector core-pulling column (52) no longer moves upward; At this time, the top block (63) will drive the product (7) to continue to move upward, so that the product (7) is separated from the inclined top core-pulling column (52), and the third core-pulling is completed.

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