Double-inclined guide column double-circulation core-pulling mechanism, core-pulling method and forming die

Abstract

The present invention discloses a dual-slant guide pin dual-circulation core-pulling mechanism, a core-pulling method, and a forming mold. The dual-slant guide pin dual-circulation core-pulling mechanism includes a fixed mold, a movable mold, a mold opening and closing drive device, a rotary drive device, two slides, and two inner pull-out inserts. The movable mold matches the fixed mold; the mold opening and closing drive device is used to drive the movable mold to move; the rotary drive device is used to drive the movable mold to rotate; the movable mold is provided with two scrapers, which are respectively arranged at both ends of the movable mold and symmetrically disposed on either side of the rotation axis of the movable mold; the scrapers are provided with two inclined guide pins; the two inclined guide pins of the scrapers are symmetrically arranged about the centerline of the scrapers. The present invention can simultaneously achieve core pulling at both ends of the mold while simplifying the structure, reducing the size of the mold, and lowering the mold production cost.

Description

Technical Field

[0001] The invention relates to the field of molds, and in particular to a double-inclined guide column double-circulation core-pulling mechanism, a core-pulling method thereof, and a forming mold. Background Art

[0002] Taillights, essential components of automobiles, often illuminate to alert vehicles behind them. Through-type taillights have become a popular design trend, featuring two-color injection molding and a slender shape (through-type taillights are typically over one meter long).

[0003] Due to the high aesthetic requirements of through-type taillights, the molds used for injection molding of through-type taillights often adopt an inverted structure. However, when the through-type taillight structure is more complex, especially when large-angle core pulling is required at both ends of the mold, the core pulling structure is more complicated and occupies a larger space, which leads to increased mold size and production costs, failing to meet industry requirements. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a double-inclined guide pin double-circulation core pulling mechanism, which can realize core pulling at both ends of the mold while simplifying the structure, reducing the size of the mold, and reducing the production cost of the mold.

[0005] A second object of the present invention is to provide a core pulling method for the above-mentioned double-inclined guide pin double-circulation core pulling mechanism.

[0006] A third object of the present invention is to provide a forming mold having the above-mentioned double-inclined guide pillar double-circulation core-pulling mechanism.

[0007] One of the purposes of the present invention is achieved by the following technical solution:

[0008] The double-inclined guide pillar double-circulation core-pulling mechanism comprises a fixed mold, a movable mold, a mold opening and closing drive device, a rotary drive device, two slide blocks and two inner pull-out inserts; the movable mold matches the fixed mold; the mold opening and closing drive device is used to drive the movable mold to move away from the fixed mold, and also to drive the movable mold to move toward the fixed mold; the rotary drive device is used to drive the movable mold to rotate; two shovels are provided on the movable mold, and the two shovels are respectively provided at the two ends of the movable mold in a one-to-one correspondence and symmetrically arranged on both sides of the rotation axis of the movable mold; two inclined guide pillars are provided on the shovel; the two inclined guide pillars on the shovel are symmetrically arranged about the center line of the shovel; from the end of the two inclined guide pillars on the shovel close to the shovel to the end away from the shovel , the distance between the two inclined guide posts of the shovel machine gradually increases; the two sliders are movably mounted on the fixed mold and are arranged corresponding to the two shovel machines respectively; a linkage hole and an air avoidance groove are provided on the slider; the linkage hole is used for inserting one of the inclined guide posts of the shovel machine, and the hole wall of the linkage hole is formed as a supporting wall for one of the inclined guide posts of the shovel machine to abut against when one of the inclined guide posts of the shovel machine moves with the movable mold to cause the slider to move; the air avoidance groove extends along the moving direction of the slider and is used for the other inclined guide post of the shovel machine to pass through it; the two inner draw-out inserts are respectively movably mounted in the fixed mold; the two inner draw-out inserts correspond one-to-one to the two sliders, and each inner draw-out insert is slidably matched with the corresponding slider.

[0009] The fixed mold is provided with two sliding grooves; the two sliding blocks correspond to the two sliding grooves respectively, and each sliding block is movably installed in the corresponding sliding groove.

[0010] A first sliding seat is provided in each sliding groove, and each sliding block is movably mounted on the first sliding seat of the corresponding sliding groove.

[0011] The slider is provided with a guide bar which is arranged in an inclined manner. The inner drawer insert is provided with a guide groove which matches the guide bar and is provided for embedding the guide bar of the corresponding slider.

[0012] The guide bar includes a connecting portion and a limiting portion; the connecting portion is arranged on the slider, the limiting portion is arranged on an end of the connecting portion away from the slider, and the limiting portion protrudes outward relative to the connecting portion in the width direction of the guide bar; the guide groove includes a limiting groove section and a penetration groove section; the limiting groove section is for the limiting portion to be embedded, the penetration groove section is connected to the limiting groove section, and is for the connecting portion to penetrate.

[0013] The fixed mold is provided with two second sliding seats, the two inner drawer inserts correspond to the two second sliding seats respectively, and each inner drawer insert is slidably matched with the corresponding second sliding seat.

[0014] The second sliding seat is provided with an inclined guide surface, and the inner drawer insert is provided with an inclined matching sliding surface that is slidably matched with the inclined guide surface of the corresponding second sliding seat.

[0015] Two limit blocks corresponding to the two sliders are fixed on the fixed mold. The slider is provided with a movement stroke limiting groove extending along the movement direction of the slider. The limit blocks are inserted into the movement stroke limiting groove of the corresponding slider.

[0016] The second object of the present invention is achieved by adopting the following technical solutions:

[0017] The core pulling method of the double-inclined guide pin double-circulation core pulling mechanism comprises the following steps:

[0018] Step 1: After the movable mold and the fixed mold are closed to complete the first injection molding, the mold opening and closing driving device drives the movable mold to move away from the fixed mold to separate the movable mold from the fixed mold. The two shovels move synchronously with the movable mold. The inclined guide pillars originally provided in the avoidance grooves of each shovel are formed into first guide pillars and move out of the avoidance grooves as the shovels move. The inclined guide pillars originally inserted in the linkage holes of the shovels are formed into second guide pillars and push against the linkage hole walls during the movement of the shovels to prompt the corresponding sliders to move forward. As the sliders move forward, the two inner-drawing inserts move in the inner-drawing direction to achieve the first core pulling.

[0019] Step 2: The movable mold is rotated 180° by the rotary drive device, and the mold opening and closing drive device is used to drive the movable mold to move toward the fixed mold. The two shovels move synchronously with the movable mold; the second guide post of each shovel moves with the shovel and penetrates into the avoidance groove of the slider; the first guide post of the shovel descends with the shovel, is inserted into the linkage hole, and presses against the wall of the linkage hole to promote the backward movement of the slider; the inner drawer insert moves under the driving action of the corresponding slider, and when the movable mold moves to close the mold with the fixed mold, each slider moves back to its position, and the inner drawer insert is reset under the driving action of the corresponding slider;

[0020] Step 3: After the movable mold and the fixed mold are closed to complete the second injection molding, the mold opening and closing drive device drives the movable mold to move away from the fixed mold to separate the movable mold from the fixed mold. The two shovels move synchronously with the movable mold. The second guide column of each shovel moves out of the avoidance groove as the shovel rises. The first guide column of the shovel pushes against the wall of the linkage hole during the movement of the shovel to prompt the corresponding slider to move forward. As each slider moves forward, the two inner pull-out inserts move in the inner pull-out direction to achieve the second core pulling.

[0021] The third object of the present invention is achieved by adopting the following technical solutions:

[0022] The forming mold has the above-mentioned double-inclined guide pillar double-circulation core-pulling mechanism.

[0023] Compared with the prior art, the beneficial effect of the present invention lies in that: by arranging two inclined guide pillars on the shovel machines at both ends of the movable mold, and by reasonably arranging the matching relationship between the shovel machine, the slider, and the inner pull-out insert, after the mold is opened for the first injection molding and the second injection molding, as the movable mold moves, the inclined guide pillars of the two shovel machines can respectively prompt the two sliders to move, and the movement of the two sliders can prompt the inner pull-out insert to move along the inner pull-out direction, which can realize the core pulling at both ends of the mold, simplify its structure, reduce the occupied space, reduce the size of the mold, and do not need to increase the design difficulty of the hot runner and other structures of the mold due to the core pulling mechanism, which can simplify the mold structure and reduce the production cost; moreover, while realizing the cyclic core pulling action, it also makes it simple to manufacture and easy to install, and ensures that the core pulling work is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the first embodiment of the double-slant guide pin double-circulation core-pulling mechanism of the present invention, in which the movable mold and the fixed mold are separated, and the mold opening and closing drive device and the rotation drive device are omitted;

[0025] Figure 2 for Figure 1 The cross-sectional view of the double-slant guide pin double-circulation core pulling mechanism is shown, with the movable mold omitted;

[0026] Figure 3 for Figure 1 The diagram of the cooperation between the shovel machine and the slider in the double-inclined guide column double-circulation core pulling mechanism shown;

[0027] Figure 4 for Figure 1 The exploded diagram of the shovel machine and the slider in the double-slant guide column double-circulation core pulling mechanism shown;

[0028] Figure 5 for Figure 4 A schematic diagram of the shovel and the slider in another direction of disassembly is shown;

[0029] Figure 6 It is a structural schematic diagram of a shovel machine in the second embodiment of the double-inclined guide pillar double-circulation core pulling mechanism of the present invention;

[0030] 10. Fixed mold; 11. Sliding groove; 12. Limit block; 13. Movable groove; 20. Movable mold; 30. Slider; 31. Linkage hole; 32. Avoidance groove; 33. Guide strip; 34. Connecting portion; 35. Limiting portion; 36. Travel-limiting groove; 40. Internal drawer insert; 41. Guide groove; 42. Limiting groove section; 43. Penetrating groove section; 44. Inclined matching sliding surface; 50. Shovel; 51. Inclined guide column; 52. Mainframe; 53. Guide column support seat; 54. Top cover; 55. Accommodating chamber; 56. Penetrating channel; 58. Fastening screw; 60. First sliding seat; 70. Second sliding seat; 71. Inclined guide surface; 81. Travel insert; 82. First travel switch; 83. Second travel switch 91. Main housing; 92. Connecting seat; 93. Mounting cavity; 94. Spring; 95. Iron block; 96. Electromagnet; 97. Electric push rod. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] Example 1

[0033] Figure 1-5The present invention discloses a structural schematic diagram of a first embodiment of a double-inclined guide column double-circulation core-pulling mechanism, which includes a fixed mold 10, a movable mold 20, a mold opening and closing drive device, a rotation drive device, two slide blocks 30 and two inner pull-out inserts 40; the movable mold 20 is matched with the fixed mold 10; the mold opening and closing drive device is used to drive the movable mold 20 to move away from the fixed mold 10, and also to drive the movable mold 20 to move toward the fixed mold 10; the rotation drive device is used to drive the movable mold 20 to rotate; two shovels 50 are provided on the movable mold 20, and the two shovels 50 are respectively arranged at both ends of the movable mold 20 in a one-to-one correspondence, and are symmetrically arranged on both sides of the rotation axis L1 of the movable mold 20; the shovel 50 is provided with two inclined guide columns 51; the two inclined guide columns 51 on the shovel 50 are symmetrically arranged about the center line of the shovel 50; the two inclined guide columns 51 on the shovel 50 are symmetrically arranged about the center line of the shovel 50; The two sliders 30 are movably mounted on the fixed mold 10 and are arranged corresponding to the two shovels 50 respectively. The sliders 30 are provided with linkage holes 31 and avoidance grooves 32. The linkage holes 31 are used for inserting one of the inclined guide posts 51 of the shovel 50, and the hole walls of the linkage holes 31 are formed as abutment walls for one of the inclined guide posts 51 of the shovel 50 to abut when the one of the inclined guide posts 51 of the shovel 50 moves with the movable mold 20, so as to move the slider 30. The avoidance grooves 32 extend along the moving direction of the slider 30 and allow the other inclined guide post 51 of the shovel 50 to pass therethrough. The two inner drawer inserts 40 are movably mounted in the fixed mold 10 respectively. The two inner drawer inserts 40 correspond to the two sliders 30 one by one, and each inner drawer insert 40 is slidably engaged with the corresponding slider 30.

[0034] After the movable mold 20 and the fixed mold 10 are closed to complete the first injection molding, the mold opening and closing driving device drives the movable mold 20 to move away from the fixed mold 10 to separate the movable mold 20 from the fixed mold 10 (that is, the mold is opened). The two shovels 50 move synchronously along the A direction with the movable mold 20. The inclined guide pillars 51 originally inserted into the avoidance groove 32 of each shovel 50 are formed into the first guide pillars. Since the avoidance groove 32 extends along the moving direction of the slider 30, the first guide pillars do not contact the groove walls at both ends of the avoidance groove 32 during the movement away from the fixed mold 10. The first guide post of each shovel 50 moves out of the avoidance groove 32 as the shovel 50 moves, and the inclined guide post 51 of the shovel 50 originally inserted in the linkage hole 31 is formed into a second guide post. The second guide post of the shovel 50 is arranged to be inclined. As the shovel 50 moves away from the fixed mold 10, it pushes against the wall of the linkage hole 31 to apply a front-to-back thrust to the slider 30 to force the corresponding slider 30 to move forward (direction B). As each slider 30 moves forward, the two inner drawers that cooperate with it are respectively The parts 40 all move in the inner pulling direction (direction C) to realize the first core pulling; then the rotary drive device drives the movable mold 20 to rotate 180°, so that the two shovels 50 rotate 180° along with the movable mold 20 (that is, the two shovels 50 exchange positions), and then the mold opening and closing drive device drives the movable mold 20 to move toward the fixed mold 10. The two shovels 50 move synchronously with the movable mold 20 toward the fixed mold 10. At this time, the second guide post of each shovel 50 is opposite to the avoidance groove 32 of the slider 30, and the first guide post is opposite to the The second guide post of each shovel 50 moves with the shovel 50 and is inserted into the avoidance groove 32 of the slider 30; the first guide post of the shovel 50 moves with the shovel 50 toward the fixed mold 10, is inserted into the linkage hole 31, and presses against the wall of the linkage hole 31 to promote the backward movement of the slider 30; the inner drawer 40 moves under the driving action of the corresponding slider 30, and when the movable mold 20 moves to close the mold with the fixed mold 10, each slider 30 moves back to its position, and the inner drawer 40 is reset under the driving action of the corresponding slider 30;After the movable mold 20 and the fixed mold 10 are closed to complete the second injection molding, the mold opening and closing driving device drives the movable mold 20 to move away from the fixed mold 10 to separate the movable mold 20 from the fixed mold 10, and the two shovels 50 move synchronously with the movable mold 20 in the direction away from the fixed mold 10. The second guide column of each shovel 50 moves out of the avoidance groove 32 as the shovel 50 moves away from the fixed mold 10. The first guide column of the shovel 50 pushes against the wall of the linkage hole 31 in the process of moving away from the fixed mold 10 as the shovel 50 moves to promote the corresponding slider 30 to move forward. As each slider 30 moves forward, the two inner pull-out inserts 40 move in the inner pull-out direction to achieve the second core pulling. Therefore, the double-bevel core pulling device provided by the present invention The guide pin double-circulation core-pulling mechanism, by installing two inclined guide pins 51 on the shovel 50 at both ends of the movable mold 20 and rationally arranging the coordination between the shovel 50, the slider 30, and the inner pull-out insert 40, allows the inclined guide pins 51 of the two shovels 50 to respectively drive the two sliders 30 to move as the movable mold 20 moves after the mold opening during primary and secondary injection molding. This, in turn, drives the inner pull-out insert 40 in the inner pull-out direction. This allows core pulling at both ends of the mold to be achieved simultaneously, while simplifying the structure, reducing the space occupied, and reducing the size of the mold. The core-pulling mechanism does not increase the design difficulty of the mold's hot runner and other structures, simplifying the mold structure and reducing production costs.

[0035] The mold opening and closing drive device can be a hydraulic cylinder, a pneumatic cylinder, or other existing mold opening and closing drive devices on the market. The rotation drive device can be a motor, or a combination of a motor and a transmission device, or other existing rotation drive devices on the market. The rotation drive device can be connected to the output shaft of the mold opening and closing drive device, and the movable mold 20 can be connected to the output shaft of the rotation drive device. In addition, the mold opening and closing drive device can also be connected to the output shaft of the rotation drive device, and the movable mold 20 can be connected to the output shaft of the mold opening and closing drive device. The mold opening and closing drive device, the rotation drive device, and the connection relationship between the two are not limited to the above description, as long as they can meet the requirements of driving the movable mold 20 to move and rotate.

[0036] The fixed mold 10 is provided with two sliding grooves 11; the two sliders 30 correspond to the two sliding grooves 11, and each slider 30 is movably mounted within the corresponding sliding groove 11. Each sliding groove 11 is provided with a first sliding seat 60, and each slider 30 is movably mounted on the first sliding seat 60 of the corresponding sliding groove 11. This arrangement facilitates the installation of the sliders 30. The mold opening and closing drive device drives the movable mold 20 to move in a direction perpendicular to the extension direction of the sliding grooves 11.

[0037] The slider 30 is provided with a guide bar 33, which is arranged at an angle, and the inner drawer 40 is provided with a guide groove 41 that matches the guide bar 33 and is embedded in the guide bar 33 of the corresponding slider 30. By adopting the above arrangement, the stability of the cooperation between the inner drawer 40 and the slider 30 can be improved.

[0038] The guide bar 33 includes a connecting portion 34 and a limiting portion 35. The connecting portion 34 is disposed on the slider 30, and the limiting portion 35 is disposed at the end of the connecting portion 34 away from the slider 30. The limiting portion 35 protrudes outward from the connecting portion 34 in the width direction of the guide bar 33. The guide groove 41 includes a limiting groove section 42 and a penetration groove section 43. The limiting groove section 42 is embedded in the limiting portion 35, and the penetration groove section 43 is connected to the limiting groove section 42 and is penetrated by the connecting portion 34. The above-described structure of the guide bar 33 and the guide groove 41 improves the stability of the inner drawer insert 40 and the slider 30 while facilitating processing and manufacturing.

[0039] The fixed mold 10 is provided with two second sliding seats 70. The two inner drawer inserts 40 correspond to each other one-to-one with the second sliding seats 70, and each inner drawer insert 40 slidably engages with the corresponding second sliding seat 70. The second sliding seat 70 is provided with an inclined guide surface 71, and the inner drawer insert 40 is provided with an inclined mating sliding surface 44 that slidably engages with the inclined guide surface 71 of the corresponding second sliding seat 70. During the forward movement of the slider 30, the corresponding inner drawer insert 40 slides along the inclined guide surface 71 under the cooperation of the guide bar 33 and the guide groove 41, moving in the inner drawer direction. During the backward movement of the slider 30, the corresponding inner drawer insert 40 slides along the inclined guide surface 71 under the cooperation of the guide bar 33 and the guide groove 41, thereby resetting the inner drawer insert 40. Specifically, the side surface of the inner drawer insert 40 forms the inclined mating sliding surface 44, and the guide groove 41 is provided at the bottom of the inner drawer insert 40.

[0040] Two limit blocks 12 corresponding to the two sliders 30 are fixed on the fixed mold 10. The slider 30 is provided with a moving stroke limiting groove 36 extending along the moving direction of the slider 30. The limit block 12 is inserted into the moving stroke limiting groove 36 of the corresponding slider 30 to limit the moving stroke of the slider 30 through the moving stroke limiting groove 36.

[0041] A stroke insert 81 is fixed on each slider 30, and two movable grooves 13 are provided on the fixed mold 10, and the stroke inserts 81 of the two sliders 30 are respectively inserted into the two movable grooves 13 in a one-to-one manner; two switch units corresponding to the two movable grooves 13 are installed on the fixed mold 10; each switch unit includes a first stroke switch 82 and a second stroke switch 83, and the first stroke switch 82 and the second stroke switch 83 of the switch unit are respectively placed on both sides of the corresponding movable groove 13 and are contacted and pressed by the stroke insert 81. The double-inclined guide column double-circulation core pulling mechanism also includes a control device, which is used to control the operation of the opening and closing mold drive device according to the touch pressure signal of the first stroke switch 82 or the touch pressure signal of the second stroke switch 83 to achieve automatic control. Specifically, in the process of the mold opening and closing driving device driving the movable mold 20 to move away from the fixed mold 10, the slider 30 moves forward under the push of the inclined guide column 51 of the shovel 50, and when the stroke insert 81 moves forward with the slider 30 to touch the first stroke switch 82, the control device controls the mold opening and closing driving device to stop working according to the touch pressure signal of the first stroke switch 82, and the movable mold 20 moves into place, and in the process of the mold opening and closing driving device driving the movable mold 20 to move toward the fixed mold 10, the slider 30 moves backward under the push of the inclined guide column 51 of the shovel 50, and when the stroke insert 81 moves backward with the slider 30 to touch the second stroke switch 83, the control device controls the mold opening and closing driving device to stop working according to the touch pressure signal of the second stroke switch 83, and the movable mold 20 moves into place and closes the mold with the fixed mold 10.

[0042] Among them, the shovel machine 50 includes a main body seat 52 and a guide column support seat 53; the two inclined guide columns 51 of the shovel machine 50 are both arranged on the lower end of the guide column support seat 53, and the guide column support seat 53 is provided with a top cover 54 protruding outward, and the main body seat 52 is provided with a accommodating cavity 55 for accommodating the guide column support seat 53, and two through-channels 56 respectively connected with the accommodating cavity 55; the two inclined guide columns 51 of the shovel machine 50 respectively pass through the two through-channels 56 in a one-to-one correspondence; the main body seat 52 is also provided with a positioning groove connected with the accommodating cavity 55, and the top cover 54 is embedded in the positioning groove and fixed to the main body seat 52 in a detachable manner. By adopting the above structure, the production of the shovel machine 50 can be facilitated, so as to reduce the production cost of the shovel machine 50, and it is convenient to disassemble and replace the inclined guide columns 51. Specifically, the top cover 54 is fixed to the main base 52 by fastening screws 58. A through hole is provided on the top cover 54, and a threaded hole is provided on the main base 52. The fastening screws 58 are passed through the through hole and threadedly connected to the threaded hole. By adopting the above structure, the disassembly and assembly of the guide column support seat 53 can be facilitated.

[0043] The present invention also discloses a core pulling method of the double-inclined guide pin double-circulation core pulling mechanism, comprising the following steps:

[0044] Step 1: After the movable mold 20 and the fixed mold 10 are closed to complete the first injection molding, the mold opening and closing driving device drives the movable mold 20 to move away from the fixed mold 10 to separate the movable mold 20 from the fixed mold 10, and the two shovels 50 move synchronously with the movable mold 20 in the direction away from the fixed mold 10. The inclined guide pillars 51 originally provided in the avoidance grooves 32 of each shovel 50 are formed into first guide pillars and are moved out of the avoidance grooves 32 as the shovel 50 moves. The inclined guide pillars 51 originally inserted in the linkage holes 31 of the shovel 50 are formed into second guide pillars and push against the wall of the linkage holes 31 as the shovel 50 moves away from the fixed mold 10 to prompt the corresponding slider 30 to move forward. As each slider 30 moves forward, the two inner pull-out inserts 40 both move in the inner pull-out direction to achieve the first core pulling;

[0045] Step 2: The movable mold 20 is rotated 180° by the rotary drive device, and the mold opening and closing drive device is used to drive the movable mold 20 to move toward the fixed mold 10. The two shovels 50 move along with the movable mold 20 toward the fixed mold 10. The second guide pin of each shovel 50 moves along with the shovel 50 toward the fixed mold 10 and penetrates into the escape groove 32 of the slider 30. The first guide pin of the shovel 50 moves along with the shovel 50 toward the fixed mold 10, is inserted into the linkage hole 31, and presses against the wall of the linkage hole 31 to promote the backward movement of the slider 30. The inner drawer 40 moves under the driving action of the corresponding slider 30. When the movable mold 20 moves to close the mold with the fixed mold 10, each slider 30 moves back to its original position, and the inner drawer 40 is reset under the driving action of the corresponding slider 30.

[0046] Step 3: After the movable mold 20 and the fixed mold 10 are closed to complete the second injection molding, the mold opening and closing driving device drives the movable mold 20 to move away from the fixed mold 10 to separate the movable mold 20 from the fixed mold 10, and the two shovels 50 move along with the movable mold 20 in the direction away from the fixed mold 10. The second guide column of each shovel 50 moves out of the avoidance groove 32 as the shovel 50 moves away from the fixed mold 10. The first guide column of the shovel 50 pushes against the wall of the linkage hole 31 in the process of moving away from the fixed mold 10 as the shovel 50 moves to promote the corresponding slider 30 to move forward. As each slider 30 moves forward, the two inner pull-out inserts 40 move in the inner pull-out direction to achieve the second core pulling.

[0047] The core pulling method of the double-inclined guide pin double-circulation core pulling mechanism disclosed in the present invention can realize the cyclic core pulling action and ensure the core pulling work is stable and in place after the mold is opened for the first injection molding and the second injection molding.

[0048] The present invention also discloses a forming mold having the above-mentioned double-inclined guide pillar double-circulation core-pulling mechanism, wherein the forming mold is applicable to the production of through-type taillights.

[0049] Example 2

[0050] The structure of the second embodiment of the double-slant guide column double-circulation core pulling mechanism shovel 50 of the present invention is Figure 1 The difference in the structure of the double-slant guide column double-circulation core pulling mechanism shovel 50 is that: the shovel 50. Figure 6 As shown, in the second embodiment of the double-inclined guide column double-circulation core-pulling mechanism shovel machine 50, the shovel machine 50 includes a main shell 91 and a connecting seat 92. The main shell 91 is provided with a mounting cavity 93 extending along its height direction. The two inclined guide columns 51 of the shovel machine 50 are both provided on the connecting seat 92. The connecting seat 92 is movably installed in the mounting cavity 93. There are a plurality of springs 94 between the connecting seat 92 and the top wall of the mounting cavity 93. The springs 94 are used to provide an elastic force that urges the connecting seat 92 to move toward the fixed mold 10 so that the inclined guide columns 51 extend out of the main shell 91. The seat 92 is provided with an iron block 95, and the shovel 50 is also provided with an electric push rod 97. The output end of the electric push rod 97 is connected to an electromagnet 96 through an insulating component, and an insulating layer is provided on the outside of the electromagnet 96; the electromagnet 96 is used to magnetically attract the iron block 95 when power is turned on so that when the electric push rod 97 drives the electromagnet 96 to move away from the fixed mold 10, it can drive the connecting seat 92 to move away from the fixed mold 10, so that the inclined guide column 51 is accommodated in the installation cavity 93, so as to shorten the mold opening movement stroke of the movable mold 20 and avoid interference with the movable mold 20 during rotation, and effectively control costs. The core pulling method of the double-inclined guide column double-circulation core pulling mechanism of this embodiment is the same as that of the double-inclined guide column double-circulation core pulling mechanism of this embodiment. Figure 1 The difference between the core pulling method of the double-inclined guide pin double-circulation core pulling mechanism shown in the figure lies in: Step 2. In the core pulling method of the double-inclined guide pin double-circulation core pulling mechanism of this embodiment, in Step 2, the electric push rod 97 drives the electromagnet 96 to move toward the connecting seat 92, the electromagnet 96 is energized, and the iron block 95 is magnetically attracted to the electromagnet 96, and then the electric push rod 97 drives the electromagnet 96 together with the connecting seat 92 and the iron block 95 to move away from the fixed mold 10 so that the inclined guide pin 51 is accommodated in the accommodating cavity 55, and then the rotary drive device is used to drive the movable mold 20 to rotate. After the movable mold 20 rotates 180°, the electromagnet 96 is de-energized, and the connecting seat 92 moves downward under the elastic force of the spring 94 so that the inclined guide pin 51 extends out of the main housing 91, and then the mold opening and closing drive device is used to drive the movable mold 20 to move toward the fixed mold 10.

[0051] The present invention also discloses a forming mold having the above-mentioned double-inclined guide pillar double-circulation core-pulling mechanism, wherein the forming mold is applicable to the production of through-type taillights.

[0052] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. Double inclined guide pillar double circulation core pulling mechanism, characterized by: It includes a fixed mold, a movable mold, a mold opening and closing drive device, a rotary drive device, two slide blocks and two inner draw-in inserts; the movable mold matches the fixed mold; the mold opening and closing drive device is used to drive the movable mold to move away from the fixed mold, and also to drive the movable mold to move toward the fixed mold; the rotary drive device is used to drive the movable mold to rotate; two shovels are provided on the movable mold, and the two shovels are respectively provided at the two ends of the movable mold in a one-to-one correspondence and symmetrically arranged on both sides of the rotation axis of the movable mold; two inclined guide columns are provided on the shovel; the two inclined guide columns on the shovel are symmetrically arranged about the center line of the shovel; from the end of the two inclined guide columns on the shovel close to the shovel to the end away from the shovel, the two ends of the shovel are symmetrically arranged. The distance between the inclined guide pillars gradually increases; the two sliders are movably mounted on the fixed mold and are arranged corresponding to the two shovels respectively; a linkage hole and an air avoidance groove are provided on the slider; the linkage hole is used for inserting one of the inclined guide pillars of the shovel, and the hole wall of the linkage hole is formed as a supporting wall for one of the inclined guide pillars of the shovel to abut against when one of the inclined guide pillars of the shovel moves with the movable mold to cause the slider to move; the air avoidance groove extends along the moving direction of the slider and is used for the other inclined guide pillar of the shovel to pass through it; the two inner draw-out inserts are respectively movably mounted in the fixed mold; the two inner draw-out inserts correspond one to one to the two sliders, and each inner draw-out insert is slidably matched with the corresponding slider.

2. The double-inclined guide pin double-circulation core pulling mechanism according to claim 1, characterized in that: The fixed mold is provided with two sliding grooves; the two sliding blocks correspond to the two sliding grooves respectively, and each sliding block is movably installed in the corresponding sliding groove.

3. The double-inclined guide pin double-circulation core pulling mechanism according to claim 2, characterized in that: A first sliding seat is provided in each sliding groove, and each sliding block is movably mounted on the first sliding seat of the corresponding sliding groove.

4. The double-slant guide pin double-circulation core pulling mechanism according to claim 1, characterized in that: The slider is provided with a guide bar which is arranged in an inclined manner. The inner drawer insert is provided with a guide groove which matches the guide bar and is provided for embedding the guide bar of the corresponding slider.

5. The double-slant guide pin double-circulation core pulling mechanism according to claim 4, characterized in that: The guide bar includes a connecting portion and a limiting portion; the connecting portion is arranged on the slider, the limiting portion is arranged on an end of the connecting portion away from the slider, and the limiting portion protrudes outward relative to the connecting portion in the width direction of the guide bar; the guide groove includes a limiting groove section and a penetration groove section; the limiting groove section is for the limiting portion to be embedded, the penetration groove section is connected to the limiting groove section, and is for the connecting portion to penetrate.

6. The double-slant guide pin double-circulation core pulling mechanism according to claim 1 or 4, characterized in that: The fixed mold is provided with two second sliding seats, the two inner drawer inserts correspond to the two second sliding seats respectively, and each inner drawer insert is slidably matched with the corresponding second sliding seat.

7. The double-slant guide pin double-circulation core pulling mechanism according to claim 6, characterized in that: The second sliding seat is provided with an inclined guide surface, and the inner drawer insert is provided with an inclined matching sliding surface that is slidably matched with the inclined guide surface of the corresponding second sliding seat.

8. The double-slant guide pin double-circulation core pulling mechanism according to claim 1, characterized in that: Two limit blocks corresponding to the two sliders are fixed on the fixed mold. The slider is provided with a movement stroke limiting groove extending along the movement direction of the slider. The limit blocks are inserted into the movement stroke limiting groove of the corresponding slider.

9. The core pulling method of the double-slant guide pin double-circulation core pulling mechanism according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: After the movable mold and the fixed mold are closed to complete the first injection molding, the mold opening and closing driving device drives the movable mold to move away from the fixed mold to separate the movable mold from the fixed mold. The two shovels move synchronously with the movable mold. The inclined guide pillars originally provided in the avoidance grooves of each shovel are formed into first guide pillars and move out of the avoidance grooves as the shovels move. The inclined guide pillars originally inserted in the linkage holes of the shovels are formed into second guide pillars and push against the linkage hole walls during the movement of the shovels to prompt the corresponding sliders to move forward. As the sliders move forward, the two inner-drawing inserts move in the inner-drawing direction to achieve the first core pulling. Step 2: The movable mold is rotated 180° by the rotary drive device, and the mold opening and closing drive device is used to drive the movable mold to move toward the fixed mold. The two shovels move synchronously with the movable mold; the second guide post of each shovel moves with the shovel and penetrates into the avoidance groove of the slider; the first guide post of the shovel descends with the shovel, is inserted into the linkage hole, and presses against the wall of the linkage hole to promote the backward movement of the slider; the inner drawer insert moves under the driving action of the corresponding slider, and when the movable mold moves to close the mold with the fixed mold, each slider moves back to its position, and the inner drawer insert is reset under the driving action of the corresponding slider; Step 3: After the movable mold and the fixed mold are closed to complete the second injection molding, the mold opening and closing drive device drives the movable mold to move away from the fixed mold to separate the movable mold from the fixed mold. The two shovels move synchronously with the movable mold. The second guide column of each shovel moves out of the avoidance groove as the shovel rises. The first guide column of the shovel pushes against the wall of the linkage hole during the movement of the shovel to prompt the corresponding slider to move forward. As each slider moves forward, the two inner pull-out inserts move in the inner pull-out direction to achieve the second core pulling.

10. The forming die is characterized in that: It has a double-inclined guide column double-circulation core-pulling mechanism as described in any one of claims 1 to 8.

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