Double-inclined-guide-column double-circulation core pulling mechanism and core pulling method and forming mold thereof

Abstract

The invention discloses a double-inclined-guide-column double-circulation core pulling mechanism, a core pulling method of the double-inclined-guide-column double-circulation core pulling mechanism and a forming mold. The double-inclined-guide-column double-circulation core pulling mechanism comprises a fixed mold, a movable mold, a mold opening and closing driving device, a rotary driving device, two sliding blocks and two inner pulling inserts. The movable mold is matched with the fixed mold; the mold opening and closing driving device is used for driving the movable mold to move; the rotary driving device is used for driving the movable mold to rotate; the movable mold is provided with two shoveling machines, and the two shoveling machines are arranged at the two ends of the movable mold in a one-to-one correspondence mode and symmetrically arranged on the two sides of the rotating axis of the movable mold; the shoveling machine is provided with two inclined guide columns; the two inclined guide columns of the shoveling machine are symmetrically arranged relative to the center line of the shoveling machine. Core pulling at the two ends of the mold can be achieved, the structure can be simplified, the size of the mold is reduced, and the manufacturing cost of the mold is reduced.

Description

Technical Field

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

[0002] Taillights are an essential part of cars, and they often serve as a reminder of the following vehicles by emitting light. Through-type taillights have become a popular design trend for cars, featuring two-color injection molding and a slender shape (the length of through-type taillights is usually more than 1 meter).

[0003] Due to the high requirements for the appearance of through-type taillights, the molds used for injection molding of through-type taillights often adopt an inverted structure. However, when the structure of the through-type taillight is more complicated, especially when the two ends of the mold need to be designed with a large-angle core pulling, in order to realize the core pulling at both ends of the mold, the core pulling structure is more complicated and needs to occupy a larger space, which leads to an increase in the size of the mold and the production cost, and fails to meet the 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 manufacturing 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] The third object of the present invention is to provide a molding die 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: The double-inclined guide pillar double-circulation core-pulling mechanism comprises a fixed mold, a movable mold, a mold opening and closing driving device, a rotary driving device, two slide blocks and two inner pull-out inserts; the movable mold matches the fixed mold; the mold opening and closing driving 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 driving device is used to drive the movable mold to rotate; two shovel machines are arranged on the movable mold, and the two shovel machines are respectively arranged at the two ends of the movable mold in a one-to-one correspondence, and are symmetrically arranged on both sides of the rotation axis of the movable mold; two inclined guide pillars are arranged on the shovel machine; the two inclined guide pillars on the shovel machine are symmetrically arranged about the center line of the shovel machine; from the end of the two inclined guide pillars on the shovel machine close to the shovel machine to the end away from the shovel machine , the distance between the two inclined guide posts of the shovel machine gradually increases; the two sliders are movably mounted on the fixed mold respectively, and are arranged corresponding to the two shovel machines respectively; a linkage hole and an 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 abutment wall for one of the inclined guide posts of the shovel machine to abut when one of the inclined guide posts of the shovel machine moves with the movable mold to move the slider; the avoidance groove extends along the moving direction of the slider, and another inclined guide post of the shovel machine is penetrated therein; the two inner draw-out inserts are movably mounted in the fixed mold respectively; the two inner draw-out inserts correspond to the two sliders one by one, and each inner draw-out insert is slidably matched with the corresponding slider.

[0008] 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.

[0009] A first sliding seat is arranged in each sliding groove, and each sliding block is movably mounted on the first sliding seat corresponding to the sliding groove.

[0010] The slide block 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 used for embedding the guide bar of the corresponding slide block.

[0011] 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 penetrating groove section; the limiting groove section is for the limiting portion to be embedded, the penetrating groove section is connected with the limiting groove section, and is for the connecting portion to penetrate.

[0012] 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.

[0013] 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.

[0014] Two limit blocks corresponding to the two sliders are fixed on the fixed mold, and a movement stroke limiting groove extending along the movement direction of the slider is provided on the slider, and the limit blocks are inserted in the movement stroke limiting groove of the corresponding slider.

[0015] The second object of the present invention is achieved by adopting the following technical solution: The core pulling method of the double-inclined guide pin double-circulation core pulling mechanism comprises the following steps: 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, and the two shovels move synchronously with the movable mold. The inclined guide pillars originally inserted in the air avoidance groove of each shovel are formed into the first guide pillars and move out of the air avoidance groove as the shovel moves. The inclined guide pillars originally inserted in the linkage holes of the shovels are formed into the second guide pillars and push against the wall of the linkage hole during the movement of the shovels to promote the corresponding slider to move forward. As each slider moves forward, the two inner draw inserts move in the inner draw direction to achieve the first core pulling; Step 2: Use the rotary drive device to drive the movable mold to rotate 180°, and use the mold opening and closing drive device to drive the movable mold to move toward the fixed mold, and the two shovels move synchronously with the movable mold; the second guide column of each shovel moves with the shovel and penetrates into the avoidance groove of the slider; the first guide column of the shovel descends with the shovel, is inserted into the linkage hole and abuts against the linkage hole wall to prompt the slider to move backward; the inner drawer 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 is reset under the driving action of the corresponding slider; Step three: After the movable mold and the fixed mold are closed to complete the second injection molding, the opening and closing mold driving device drives the movable mold to move away from the fixed mold to separate the movable mold from the fixed mold, and 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, and 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.

[0016] The third object of the present invention is achieved by adopting the following technical solutions: The molding die has the above-mentioned double-inclined guide pillar double-circulation core-pulling mechanism.

[0017] Compared with the prior art, the beneficial effect of the present invention lies in that two inclined guide pillars are arranged on the shovel machines at both ends of the movable mold, and the matching relationship between the shovel machines, the sliders and the inner pull-out inserts is reasonably arranged, so that after the mold is opened for the first injection molding and the second injection molding, as the movable mold moves, the two sliders can be respectively prompted to move by the inclined guide pillars of the two shovel machines, and the inner pull-out inserts can be prompted to move along the inner pull-out direction by the movement of the two sliders, so that the core pulling at both ends of the mold can be realized, and its structure can be simplified, the occupied space can be reduced, the size of the mold can be reduced, and there is no 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 install, and ensures that the core pulling work is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the state in which the movable mold and the fixed mold are separated in the first embodiment of the double-slant guide pin double-circulation core pulling mechanism of the present invention, and the mold opening and closing drive device and the rotation drive device are omitted; Figure 2 for Figure 1 The cross-sectional view of the double-slant guide pin double-circulation core pulling mechanism shown in FIG. 1 , and the movable mold is omitted; Figure 3 for Figure 1 The schematic diagram of the cooperation between the shovel machine and the slide block in the double-inclined guide column double-circulation core pulling mechanism shown; Figure 4 for Figure 1 An exploded schematic diagram of a shovel machine and a slide block in a double-inclined guide column double-circulation core pulling mechanism shown; Figure 5 for Figure 4 A schematic diagram of the shovel and the slider in another direction of disassembly; Figure 6 It is a structural schematic diagram of a shovel machine in a second embodiment of the double-inclined guide pillar double-circulation core pulling mechanism of the present invention; 10. Fixed mold; 11. Sliding groove; 12. Limiting block; 13. Movable groove; 20. Moving mold; 30. Sliding block; 31. Linkage hole; 32. Avoiding groove; 33. Guide strip; 34. Connecting part; 35. Limiting part; 36. Moving stroke limiting groove; 40. Inner draw insert; 41. Guide groove; 42. Limiting groove section; 43. Penetrating groove section; 44. Inclined matching sliding surface; 50. Shovel; 51. Inclined guide column; 52. Main machine seat; 53. Guide column support seat; 54. Top cover; 55. Accommodating cavity; 56. Penetrating channel; 58. Fastening screw; 60. First sliding seat; 70. Second sliding seat; 71. Inclined guide surface; 81. Stroke insert; 82. First stroke switch; 83. Second stroke switch; 91. Main housing; 92. Connecting seat; 93. Mounting cavity; 94. Spring; 95. Iron block; 96. Electromagnet; 97. Electric push rod. DETAILED DESCRIPTION

[0019] The present invention is 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 a new embodiment.

[0020] Example 1

[0021] Figure 1-5 The structural schematic diagram of the first embodiment of a double-inclined guide column double-circulation core-pulling mechanism is disclosed, and the double-inclined guide column double-circulation core-pulling mechanism includes a fixed mold 10, a movable mold 20, a mold opening and closing driving device, a rotation driving device, two slide blocks 30 and two inner pull-out inserts 40; the movable mold 20 matches the fixed mold 10; the mold opening and closing driving device is used to drive the movable mold 20 to move away from the fixed mold 10, and is also used to drive the movable mold 20 to move toward the fixed mold 10; the rotation driving device is used to drive the movable mold 20 to rotate; two shovel machines 50 are arranged on the movable mold 20, and the two shovel machines 50 are respectively arranged at the two 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 machine 50 is provided with two inclined guide columns 51; the two inclined guide columns 51 on the shovel machine 50 are symmetrically arranged about the center line of the shovel machine 50; the two inclined guide columns 51 on the shovel machine 50 are arranged symmetrically about the center line of the shovel machine 50; the shovel machine 50 is close to the shovel machine 50 from the two inclined guide columns 51 on the shovel machine 50 The distance between the two inclined guide posts 51 of the shovel 50 gradually increases from one end to the end away from 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 slider 30 is provided with a linkage hole 31 and an escape groove 32; the linkage hole 31 is used for inserting one of the inclined guide posts 51 of the shovel 50, and the hole wall of the linkage hole 31 is formed as abutment wall for one of the inclined guide posts 51 of the shovel 50 to abut when one of the inclined guide posts 51 of the shovel 50 moves with the movable mold 20 to move the slider 30; the escape groove 32 extends along the moving direction of the slider 30, and another inclined guide post 51 of the shovel 50 is penetrated therein; the two inner draw-out inserts 40 are movably mounted in the fixed mold 10 respectively; the two inner draw-out inserts 40 correspond to the two sliders 30 one by one, and each inner draw-out insert 40 is slidably matched with the corresponding slider 30.

[0022] After the movable mold 20 and the fixed mold 10 are molded together 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 (i.e., mold opening), and the two shovels 50 move synchronously along the A direction with the movable mold 20. The inclined guide pillars 51 originally inserted into the air avoidance groove 32 of each shovel 50 are formed into first guide pillars. Since the air avoidance groove 32 extends along the moving direction of the slider 30, the first guide pillars will not contact the groove walls at both ends of the air avoidance groove 32 during the movement of the first guide pillars 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 to push against the wall of the linkage hole 31 as the shovel 50 moves away from the fixed mold 10, so as to apply a forward and backward thrust to the slide block 30 to cause the corresponding slide block 30 to move forward (direction B). As each slide block 30 moves forward, the two inner drawers respectively matched with it are 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 shovel machines 50 rotate 180° with the movable mold 20 (that is, the two shovel machines 50 exchange positions), and then the mold opening and closing drive device drives the movable mold 20 to move toward the fixed mold 10, and the two shovel machines 50 move synchronously with the movable mold 20 toward the fixed mold 10. At this time, the second guide column of each shovel machine 50 is opposite to the avoidance groove 32 of the slider 30, and the first guide column 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 abuts against the hole wall of the linkage hole 31 to promote the slider 30 to move backward; the inner drawer 40 moves under the driving action of the corresponding slider 30, and when the movable mold 20 moves to close the fixed mold 10, each slider 30 moves back to its position, and the inner drawer 40 completes the reset under the driving action of the corresponding slider 30;After the movable mold 20 and the fixed mold 10 are molded together 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 during the process of moving away from the fixed mold 10 as the shovel 50 moves, so as to prompt the corresponding slider 30 to move forward. As each slider 30 moves forward, the two inner draw inserts 40 move in the inner draw direction to realize the second core pulling. The guide column double-circulation core pulling mechanism is provided with two inclined guide columns 51 on the shovel machine 50 at both ends of the movable mold 20, and the matching relationship between the shovel machine 50, the slider 30, and the inner draw insert 40 is reasonably set, so that after the first injection molding and the second injection molding are opened, the two sliders 30 can be moved respectively by the inclined guide columns 51 of the two shovel machines 50, and the inner draw insert 40 can be moved along the inner draw direction by the movement of the two sliders 30, so that the core pulling at both ends of the mold can be realized at the same time, and its structure can be simplified, the occupied space position can be reduced, and the size of the mold can be reduced, and the design difficulty of the hot runner and other structures of the mold does not need to be increased due to the core pulling mechanism, which can simplify the mold structure and reduce the production cost. ;

[0023] Among them, the mold opening and closing driving device can adopt the existing mold opening and closing driving devices on the market, such as oil cylinders and air cylinders. The rotation driving device can adopt the existing rotation driving devices on the market, such as motors, or the combination of motors and transmission devices. The rotation driving device can be connected to the output shaft of the mold opening and closing driving device, and the movable mold 20 is connected to the output shaft of the rotation driving device. In addition, the mold opening and closing driving device can also be connected to the output shaft of the rotation driving device, and the movable mold 20 is connected to the output shaft of the mold opening and closing driving device. The mold opening and closing driving device, the rotation driving device and the connection relationship between the two are not limited to the above description, as long as the requirements of driving the movable mold 20 to move and rotate can be met.

[0024] The fixed mold 10 is provided with two sliding grooves 11; the two sliders 30 correspond to the two sliding grooves 11 respectively, and each slider 30 is movably installed in the corresponding sliding groove 11. A first sliding seat 60 is provided in each sliding groove 11, and each slider 30 is movably installed on the first sliding seat 60 of the corresponding sliding groove 11. By adopting the above arrangement, the installation of the slider 30 can be facilitated. The direction in which the mold opening and closing driving device drives the movable mold 20 to move is perpendicular to the extension direction of the sliding groove 11.

[0025] The slider 30 is provided with a guide bar 33, which is arranged in an inclined manner, and the inner drawer insert 40 is provided with a guide groove 41 which matches the guide bar 33 and is provided for the guide bar 33 of the corresponding slider 30 to be embedded. By adopting the above arrangement, the stability of the cooperation between the inner drawer insert 40 and the slider 30 can be improved.

[0026] The guide bar 33 includes a connection portion 34 and a limiting portion 35; the connection portion 34 is arranged on the slider 30, the limiting portion 35 is arranged on the end of the connection portion 34 away from the slider 30, and the limiting portion 35 protrudes outward relative to the connection 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 for the limiting portion 35 to be embedded, and the penetration groove section 43 is connected to the limiting groove section 42 and is for the connection portion 34 to penetrate. By adopting the above structure of the guide bar 33 and the guide groove 41, the stability of the cooperation between the inner drawer 40 and the slider 30 can be improved, and the processing and manufacturing can be facilitated.

[0027] The fixed mold 10 is provided with two second sliding seats 70, and the two inner drawer inserts 40 correspond to the two second sliding seats 70 respectively, and each inner drawer insert 40 is slidably matched 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 matching sliding surface 44 that is slidably matched with the inclined guide surface 71 of the corresponding second sliding seat 70. In the process of the slider 30 moving forward, 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 to move in the inner drawer direction; and in the process of the slider 30 moving backward, 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 to achieve the reset of the inner drawer insert 40. Specifically, the side surface of the inner drawer insert 40 is formed as the inclined matching sliding surface 44, and the guide groove 41 is provided at the bottom of the inner drawer insert 40.

[0028] 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.

[0029] A stroke insert 81 is fixed on each slider 30, and two movable grooves 13 are provided on the fixed mold 10. 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 arranged on both sides of the corresponding movable groove 13 and are 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, so as to realize 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.

[0030] The shovel machine 50 comprises a main machine base 52 and a guide column support base 53; the two inclined guide columns 51 of the shovel machine 50 are both arranged on the lower end of the guide column support base 53, the guide column support base 53 is provided with a top cover 54 protruding outward, the main machine base 52 is provided with a receiving cavity 55 for receiving the guide column support base 53, and two through-channels 56 respectively connected with the receiving 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 machine base 52 is also provided with a positioning groove connected with the receiving cavity 55, the top cover 54 is embedded in the positioning groove, and is fixed on the main machine base 52 in a detachable manner, and by adopting the above structure, the manufacture of the shovel machine 50 can be facilitated, so as to reduce the manufacture cost of the shovel machine 50, and it is convenient for the disassembly, assembly and replacement of 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.

[0031] The present invention also discloses a core pulling method of the double-inclined guide pin double-circulation core pulling mechanism, comprising the following steps: Step 1: After the movable mold 20 and the fixed mold 10 are molded together 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 away from the fixed mold 10. The inclined guide column 51 of each shovel 50 originally inserted in the air avoidance groove 32 is formed into a first guide column and moves out of the air avoidance groove 32 as the shovel 50 moves. The inclined guide column 51 of the shovel 50 originally inserted in the linkage hole 31 is formed into a second guide column and pushes against the wall of the linkage hole 31 during the process of the shovel 50 moving away from the fixed mold 10 to prompt the corresponding slider 30 to move forward. As each slider 30 moves forward, the two inner draw inserts 40 move along the inner draw direction to achieve the first core pulling; Step 2: Use the rotary drive device to drive the movable mold 20 to rotate 180°, and use the mold opening and closing drive device to drive the movable mold 20 to move toward the fixed mold 10, and the two shovels 50 move with the movable mold 20 toward the fixed mold 10; the second guide column of each shovel 50 moves with the shovel 50 toward the fixed mold 10, and is inserted into the avoidance groove 32 of the slider 30; the first guide column of the shovel 50 moves with the shovel 50 toward the fixed mold 10, is inserted into the linkage hole 31 and abuts against the hole wall of the linkage hole 31 to promote the slider 30 to move backward; 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 place, and the inner drawer 40 is reset under the driving action of the corresponding slider 30; Step three: 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 during the process of moving the shovel 50 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 move in the inner pull-out direction to achieve the second core pulling.

[0032] 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 primary injection molding and the secondary injection molding mold opening.

[0033] The present invention also discloses a forming mold, which has the above-mentioned double-inclined guide pillar double-circulation core-pulling mechanism. The forming mold can be applied to the production of through-type taillights.

[0034] Example 2

[0035] 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 structure of the double-inclined guide column double-circulation core pulling mechanism shovel 50 shown is different only in that: 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 arranged on the connecting seat 92, the connecting seat 92 is movably installed in the mounting cavity 93, and a plurality of springs 94 are abutted between the connecting seat 92 and the top wall of the mounting cavity 93, the springs 94 are used to provide an elastic force to urge 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 connecting seat 92 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 absorb 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 moving stroke of the movable mold 20 and avoid interference with the movable mold 20 when rotating, and effectively control the cost. The core pulling method of the double inclined guide column double circulation core pulling mechanism of this embodiment is similar to Figure 1 The difference of the core pulling method of the double-inclined guide pin double-circulation core pulling mechanism shown in the figure is: 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 adsorbed on the electromagnet 96, and then the electromagnet 96 is driven by the electric push rod 97 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 rotating drive device is used to drive the movable mold 20 to rotate, and 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 opening and closing mold drive device is used to drive the movable mold 20 to move toward the fixed mold 10.

[0036] The present invention also discloses a forming mold, which has the above-mentioned double-inclined guide pillar double-circulation core-pulling mechanism. The forming mold can be applied to the production of through-type taillights.

[0037] The above-mentioned 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 substitutions made by technicians in this field on the basis of the present invention shall 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 comprises a fixed mold, a movable mold, a mold opening and closing driving device, a rotation driving device, two slide blocks and two inner draw-in inserts; the movable mold matches the fixed mold; the mold opening and closing driving device is used to drive the movable mold to move away from the fixed mold, and is also used to drive the movable mold to move towards the fixed mold; the rotation driving device is used to drive the movable mold to rotate; two shovels are arranged on the movable mold, and the two shovels are respectively arranged at the two ends of the movable mold in a one-to-one correspondence, and are symmetrically arranged on both sides of the rotation axis of the movable mold; two inclined guide columns are arranged 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 abutment 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 move the slider; the air avoidance groove extends along the moving direction of the slider, and another inclined guide pillar of the shovel is passed through it; the two inner draw-out inserts are movably mounted in the fixed mold respectively; the two inner draw-out inserts correspond to the two sliders one by one, 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 arranged in each sliding groove, and each sliding block is movably mounted on the first sliding seat corresponding to the sliding groove.

4. The double-inclined guide pin double-circulation core pulling mechanism according to claim 1, characterized in that: The slide block 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 used for embedding the guide bar of the corresponding slide block.

5. The double-inclined 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 penetrating groove section; the limiting groove section is for the limiting portion to be embedded, the penetrating groove section is connected with the limiting groove section, and is for the connecting portion to penetrate.

6. The double-inclined 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-inclined 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-inclined 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, and a movement stroke limiting groove extending along the movement direction of the slider is provided on the slider, and the limit blocks are inserted in the movement stroke limiting groove of the corresponding slider.

9. The core pulling method of the double-inclined 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, and the two shovels move synchronously with the movable mold. The inclined guide pillars originally inserted in the air avoidance groove of each shovel are formed into the first guide pillars and move out of the air avoidance groove as the shovel moves. The inclined guide pillars originally inserted in the linkage holes of the shovels are formed into the second guide pillars and push against the wall of the linkage hole during the movement of the shovels to promote the corresponding slider to move forward. As each slider moves forward, the two inner draw inserts move in the inner draw direction to achieve the first core pulling; Step 2: Use the rotary drive device to drive the movable mold to rotate 180°, and use the mold opening and closing drive device to drive the movable mold to move toward the fixed mold, and the two shovels move synchronously with the movable mold; the second guide column of each shovel moves with the shovel and penetrates into the avoidance groove of the slider; the first guide column of the shovel descends with the shovel, is inserted into the linkage hole and abuts against the linkage hole wall to prompt the slider to move backward; the inner drawer 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 is reset under the driving action of the corresponding slider; Step three: After the movable mold and the fixed mold are closed to complete the second injection molding, the opening and closing mold driving device drives the movable mold to move away from the fixed mold to separate the movable mold from the fixed mold, and 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, and 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. A molding die, characterized in that: It has a double-slant guide column double-circulation core-pulling mechanism as described in any one of claims 1-8.

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