A mold insert installation structure and insert adjustment method

Abstract

The present invention relates to the technical field of mold inserts, and proposes a mold insert installation structure and an insert adjustment method, including a lower mold base, an insert and an adjustment mechanism, the adjustment mechanism including a fixed frame and a crankshaft, the fixed frame is fixedly arranged in the installation groove, and a slide groove and a rotation groove are opened inside the fixed frame; the input end of the crankshaft passes through and is rotatably arranged on the lower mold base, and the output end thereof is rotatably arranged in the slide groove, and the output end of the crankshaft can be rotatably arranged in the rotation groove; two adjustment mechanisms are arranged, and the two adjustment mechanisms are arranged in parallel and at intervals along the length direction of the slide groove. The present invention sets two fixed frames and two crankshafts, and opens a slide groove and a rotation groove in the fixed frame, and utilizes the mutual cooperation between the crankshaft output end and the slide groove and the rotation groove, so as to meet the rotation and translation requirements of the insert, and transfer the processing mold of one workpiece to another workpiece, thereby improving the versatility of the mold.

Description

Technical Field

[0001] The invention relates to the technical field of mold inserts, and in particular to a mold insert mounting structure and an insert adjustment method. Background Art

[0002] In the production process of plastic parts and rubber parts, molds are often used. A mold is a special equipment used for material molding. It usually molds the material through injection molding, blow molding, extrusion, die casting and other methods to achieve the shape processing of the workpiece. In the mold, it is usually necessary to assemble some inserts to assist the workpiece molding. For the parts of the mold that need to be frequently re-molded, inserts can be prepared. When the mold needs to be re-molded, only the inserts need to be replaced, so that the injected raw materials can be formed into different shapes. For example, in the preparation process of tires, the mold used is usually not an integrated structure, but is composed of several separate parts assembled together, which is a split structure. At the same time, inserts are often set separately for the tire pattern part to change the stripe structure during tire molding.

[0003] The invention with the announcement number CN118372436B discloses a mold insert installation structure and its application method, including a mold base and a mold core, wherein the mold core is arranged on the mold base; and also includes an insert, a driving member and a positioning block, wherein a cavity is provided between the mold core and the mold base, a molding cavity is provided on the side of the mold core away from the mold base, and a plurality of positioning grooves are provided in the molding cavity; the insert is provided in the molding cavity; the driving member is provided in the cavity, and the movable end of the driving member is connected to the insert to drive the insert to rotate; the positioning block is slidably provided on the insert and selectively plugged into the positioning groove to position the insert. By providing the insert in the mold core and providing the driving member for adjusting the position of the insert, the positioning block can be used to limit the position, so that when similar products need to be produced, the position of the insert can be adjusted by the driving member, without changing the mold and disassembling the insert. It has the advantages of good versatility and a wide range of adaptability, and can effectively reduce the production cost of a variety of similar products.

[0004] In the above technical solution, in order to improve the versatility of the mold, a driving member for rotating the insert is provided. However, when the processing mold of a workpiece is transferred to another workpiece, the simple rotation of the insert often cannot meet the actual needs, resulting in the mold's versatility being less than ideal. Summary of the invention

[0005] In view of this, the present invention proposes a mold insert installation structure and an insert adjustment method, which can realize the rotation and translation of the insert in the mold groove and improve the versatility of the mold.

[0006] The technical solution of the present invention is implemented as follows: On the one hand, the present invention provides a mold insert installation structure, including a lower mold base, an insert and an adjustment mechanism, wherein:

[0007] A die groove is formed on the top side of the lower die base;

[0008] The insert is disposed in the mold groove, and a mounting groove is provided on a side of the insert close to the mold groove;

[0009] The adjusting mechanism comprises a fixing frame and a crankshaft, wherein the fixing frame is fixedly arranged in the mounting groove, and a slide groove and a rotation groove are provided inside the fixing frame, and the rotation groove is located in the slide groove; the input end of the crankshaft passes through and is rotationally arranged on the lower die seat, and the output end thereof is rotationally arranged in the slide groove and slides along the length direction of the slide groove, and the output end of the crankshaft can be rotationally arranged in the rotation groove;

[0010] The two adjusting mechanisms are provided, and the two adjusting mechanisms are arranged in parallel and at intervals along the length direction of the slide slot.

[0011] On the basis of the above technical solution, preferably, the crankshaft includes a first shaft body, a connecting plate, a second shaft body and a top screw, wherein:

[0012] The first shaft penetrates through and is rotatably disposed on the lower die base;

[0013] The second shaft body is parallel to and spaced from the first shaft body, and is fixedly disposed on both sides of the connecting plate, the second shaft body is slidably disposed in the slide groove, and when the connecting plate is parallel to the length direction of the slide groove, the second shaft body and the first shaft body are symmetrical about the center point of the slide groove;

[0014] The top screw passes through and is slidably arranged in the second shaft body, and is connected with the connecting plate through threaded cooperation. The top screw is located in the connecting plate and the second shaft body, and can be rotatably arranged in the rotating groove.

[0015] More preferably, a convex portion is provided on the peripheral side of the top screw away from one end of the connecting plate;

[0016] A through hole and an opening and closing seam are provided in the second shaft body, wherein the through hole is a stepped hole, wherein the end of the through hole away from the connecting plate is a large hole portion, and the end of the through hole close to the connecting plate is a small hole portion, wherein the inner diameter of the large hole portion is equal to the inner diameter of the rotating groove and the outer diameter of the protruding portion, and the inner diameter of the small hole portion is equal to the outer diameter of the top screw; and the opening and closing seam is connected to the large hole portion and the small hole portion.

[0017] More preferably, the rotating groove penetrates to a side of the fixing frame away from the connecting plate, the top screw penetrates the connecting plate, and the depth of the large hole portion is not less than the length of the protrusion along the axial direction of the large hole portion;

[0018] When the end of the top screw away from the connecting plate is located in the rotating groove, the protrusion or a part of the protrusion is located in the rotating groove and is not located in the small hole, and the end of the top screw away from the rotating groove is located in the connecting plate;

[0019] When the end of the top screw away from the connecting plate is flush with the end of the second shaft away from the connecting plate, the protrusion is located in the large hole portion and not in the small hole portion, and the end of the top screw away from the rotating groove is located in the connecting plate;

[0020] When one end of the top screw away from the connecting plate is located in the large hole portion and a part of the protrusion is located in the small hole portion, the second shaft body abuts against the inner wall of the slide groove, and one end of the top screw away from the rotating groove is located in the connecting plate;

[0021] When one end of the top screw away from the connecting plate is flush with one end of the large hole portion close to the small hole portion, the protrusion is located in the small hole portion, the second shaft body abuts against the inner wall of the slide groove, and one end of the top screw away from the rotating groove extends out of the connecting plate and abuts against the inner wall of the mold groove.

[0022] More preferably, an operating hole is provided on a side of the fixing frame away from the connecting plate, the length of the operating hole is equal to the length of the slide slot, the width of the operating hole is smaller than the inner diameter of the rotating slot, and the operating hole is connected to both the slide slot and the rotating slot;

[0023] The insert includes an insert body, a movable cover and a clamping rod, the insert body is arranged in contact with the mold groove, the mounting groove is arranged on a side of the insert body close to the mold groove, and an exposure hole is opened on a side of the insert body away from the mold groove, and the exposure hole is connected with the mounting groove and the operating hole; the movable cover is detachably fixed in the exposure hole; the clamping rod is fixed on the movable cover and is clamped with the mounting groove, the exposure hole and the operating hole.

[0024] On the basis of the above technical solution, preferably, it further comprises a driving mechanism, wherein the driving mechanism comprises two worm wheels and two worms, wherein:

[0025] The two worm gears are coaxially fixed on the input ends of the two crankshafts respectively;

[0026] The two worms are both rotatably arranged on the lower die base and are respectively meshed with the two worm wheels.

[0027] More preferably, the driving mechanism further includes a synchronization shaft, three gears and a support seat, wherein:

[0028] The synchronization shaft is slidably and rotatably arranged on the lower die base;

[0029] The three gears are coaxially fixed on the two worms and the synchronization shaft respectively;

[0030] The support seat includes a base, a sliding seat and a spring. The base is fixedly arranged on the lower die seat, and the synchronous shaft is slidably arranged on the base; the sliding seat is slidably arranged on the base and abuts against the bottom side of the synchronous shaft; the spring is fixedly arranged on the lower die seat and abuts against the bottom side of the sliding seat;

[0031] In a natural state, the gear on the synchronization shaft is meshed with the other two gears. When the synchronization shaft slides due to an external force, the gear on the synchronization shaft is separated from the other two gears.

[0032] More preferably, the cross-sections of the second shaft body and the slide groove are both T-shaped.

[0033] More preferably, the outer diameter of the protrusion first remains unchanged and then gradually decreases along the direction from the top screw being away from one end of the connecting plate to the direction from the top screw being close to one end of the connecting plate.

[0034] In a second aspect, the present invention provides a method for adjusting a mold insert, using the above-mentioned mold insert installation structure, comprising the following steps:

[0035] S1, determining a moving path of the insert in the mold groove according to processing drawings of two workpieces;

[0036] S2, determining the displacement of the two crankshaft output ends according to the moving path of the insert, which includes the rotation angle of the two crankshaft output ends in the slide groove and / or the rotating groove and the sliding length of the two crankshaft output ends in the slide groove;

[0037] S3, determining the rotation angles of the input ends of the two crankshafts and the matching conditions between the output ends of the crankshafts and the slide groove and the rotation groove according to the displacements of the output ends of the two crankshafts;

[0038] S4, adjusting the input end and the output end of the crankshaft according to the data of step S3, and moving the insert to a specified position.

[0039] The mold insert installation structure and the insert adjustment method of the present invention have the following beneficial effects compared with the prior art:

[0040] (1) By setting two fixed frames and two crankshafts, and opening a slide groove and a rotating groove in the fixed frames, the output end of the crankshaft cooperates with the slide groove and the rotating groove to meet the rotation and translation requirements of the insert, and the processing mold of one workpiece can be transferred to another workpiece, thereby improving the versatility of the mold;

[0041] (2) By providing an opening and closing seam, a large hole portion and a small hole portion on the second shaft body, and providing a protrusion portion on the top screw, the cooperation between the two can not only realize the cooperation between the crankshaft and the slide groove and the rotating groove, but also allow the second shaft body to be abutted and fixed with the fixing frame, thereby improving the fixation degree between the insert and the lower mold base. By providing a mounting groove on the side of the insert close to the mold groove and installing the fixing frame in the mounting groove, it is possible to avoid leaving a hole groove on the lower mold base, thereby improving the fit between the insert and the lower mold base, thereby not affecting the injection molding process of the workpiece.

[0042] (3) By providing an operating hole on the fixing frame and configuring the insert to include an insert body, a movable cover and a clamping rod, not only the convenience of operating the top screw can be improved, but also the installation positions of the movable cover and the fixing frame can be limited;

[0043] (4) By providing a worm wheel and a worm, it is possible to avoid the output end of the crankshaft driving its input end to rotate. By providing a synchronous shaft, a gear and a support seat, the synchronous shaft can be used to drive the two worms to rotate synchronously without the worm driving the synchronous shaft to rotate, thereby improving the operating convenience of the drive mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 A three-dimensional diagram of a mold insert installation structure and an insert adjustment method of the present invention;

[0046] Figure 2 A top view of a mold insert installation structure and an insert adjustment method of the present invention;

[0047] Figure 3 It is a bottom view of the adjusting mechanism when the insert is translated in a mold insert installation structure and an insert adjustment method of the present invention;

[0048] Figure 4 It is a bottom view of the adjusting mechanism when the insert is rotated in the first manner in a mold insert installation structure and an insert adjustment method of the present invention;

[0049] Figure 5 It is a bottom view of the adjusting mechanism when the insert is rotated in the second manner in a mold insert installation structure and an insert adjustment method of the present invention;

[0050] Figure 6 for Figure 2 Cross-sectional view of the fixed frame in the middle AA direction;

[0051] Figure 7 for Figure 2 Cross-sectional view of the fixing frame in the middle BB direction;

[0052] Figure 8 An exploded view of a crankshaft in a mold insert installation structure and an insert adjustment method of the present invention;

[0053] Fig. 9 It is a partial stereoscopic diagram of a fixing frame in a mold insert installation structure and an insert adjustment method of the present invention;

[0054] Fig.10 It is a cross-sectional view of a top screw in a mold insert installation structure and an insert adjustment method of the present invention;

[0055] Fig.11 A partial exploded view of an insert in a mold insert installation structure and an insert adjustment method of the present invention;

[0056] Fig.12 It is a front view of a gear in a mold insert installation structure and an insert adjustment method of the present invention;

[0057] Fig.13 It is a three-dimensional diagram of a driving mechanism in a mold insert installation structure and an insert adjustment method of the present invention;

[0058] Fig.14 A three-dimensional diagram of a support seat in a mold insert installation structure and an insert adjustment method of the present invention;

[0059] Fig.15 The present invention is a cross-sectional view of a support seat in a mold insert installation structure and an insert adjustment method.

[0060] Among them: 1. lower die base; 101. die groove; 2. insert; 21. insert body; 22. movable cover; 23. clamping rod; 201. mounting groove; 202. exposure hole; 3. adjustment mechanism; 31. fixing frame; 32. crankshaft; 321. first axis; 322. connecting plate; 323. second axis; 324. top screw; 301. slide groove; 302. rotating groove; 303. raised part; 304. through hole; 3041. large hole part; 3042. small hole part; 305. opening and closing seam; 306. operation hole; 4. driving mechanism; 41. worm wheel; 42. worm; 43. synchronous shaft; 44. gear; 45. support seat; 451. base; 452. sliding seat; 453. spring. DETAILED DESCRIPTION

[0061] The following will be combined with the specific implementation of the present invention to clearly and completely describe the technical solution in the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementation. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] like Figure 1-15 As shown, a mold insert installation structure of the present invention includes a lower mold base 1, an insert 2, an adjustment mechanism 3 and a driving mechanism 4, which aims to improve the versatility of the mold so that the mold can be adapted to the processing of workpieces of different shapes.

[0063] A mold groove 101 is opened on the top side of the lower mold base 1. After it is combined with the mold that cooperates with it, the mold groove 101 is formed into a closed space. At this time, the injection molding material is injected into the mold groove 101 to generate a workpiece of corresponding shape. The insert 2 is a protrusion in the mold groove 101, which is used to generate grooves on the surface of the workpiece. The present application arranges the insert 2 as an independent structure, and the lower mold base 1 is adapted to different workpieces by changing the position of the insert 2 in the mold groove 101.

[0064] The adjusting mechanism 3 is used to control the movement of the insert 2. The adjusting mechanism 3 includes a fixing frame 31 and a crankshaft 32. The input end and the output end of the crankshaft 32 are parallel and do not overlap. The input end of the crankshaft 32 passes through and is rotatably set on the lower mold base 1. The fixing frame 31 is fixedly set on the insert 2 and is connected to the output end of the crankshaft 32. When the input end of the crankshaft 32 is rotated, the output end of the crankshaft 32 can be driven to rotate along a circular path. By utilizing the cooperation between the output end of the crankshaft 32 and the fixing frame 31, the position of the insert 2 in the mold groove 101 can be adjusted, thereby changing the mold.

[0065] A slide groove 301 and a rotating groove 302 are provided inside the fixed frame 31. The slide groove 301 is a long strip groove-like structure, and the rotating groove 302 is a circular groove-like structure, and the rotating groove 302 is located in the slide groove 301. The output end of the crankshaft 32 can be rotatably set in the slide groove 301, and can also be rotatably set in the rotating groove 302, and can slide along the length direction of the slide groove 301. There are two adjustment mechanisms 3, and the two adjustment mechanisms 3 are parallel and spaced apart along the length direction of the slide groove 301. When the input ends of the two crankshafts 32 are rotated, the output ends of the two crankshafts 32 can cooperate with the two fixed frames 31 to drive the insert 2 to move in different forms, wherein the movement of the insert 2 includes translation and rotation.

[0066] The input ends of the two crankshafts 32 can rotate synchronously or asynchronously. Figure 3As shown, when the output end of at least one crankshaft 32 is rotatably set in the rotating groove 302, the insert 2 can be driven to translate along the circular path by utilizing the synchronous rotation of the input ends of the two crankshafts 32; when the output ends of the two crankshafts 32 are both set in the slide groove 301 but not connected to the rotating groove 302, the insert 2 can be translated left and right, and the synchronous rotation of the input ends of the two crankshafts 32 can drive the insert 2 to translate up and down, thereby realizing the change of the position of the insert 2 without changing the angle of the insert 2.

[0067] The asynchronous rotation of the input ends of the two crankshafts 32 will change the angle of the insert 2. There are three types of asynchronous rotation. The first type is as follows: Figure 4 As shown, the output end of the left crankshaft 32 is slidably and rotatably set in the slide groove 301, and the output end of the right crankshaft 32 is rotatably set in the rotation groove 302, so that the rotation speed or angle of the input ends of the two crankshafts 32 is different; the second method is as shown in Figure 5 As shown, the output end of the left crankshaft 32 is rotatably set in the rotating groove 302, and the output end of the right crankshaft 32 is slidably and rotatably set in the slide groove 301, so that the rotation speed or angle of the input ends of the two crankshafts 32 is different; the third method is to slide and rotate the output ends of the two crankshafts 32 in the slide groove 301, so that the rotation speed or angle of the input ends of the two crankshafts 32 is different. These three methods can all realize the adjustment of the angle of the insert 2. Combined with the above-mentioned translation of the insert 2, the diversity of the position change of the insert 2 can be improved, making the present mold more versatile.

[0068] Under the premise of only considering the rotation angle of the insert 2 without considering its translation distance, although the above three methods can all allow the insert 2 to rotate to the same angle, the two crankshafts 32 are arranged in parallel, so that there are certain differences in the above multiple rotation methods.

[0069] Taking the first two rotation methods as an example, when the distance between the two crankshafts 32 is 540 mm, and the distance between the input end and the output end of the same crankshaft 32 is 65 mm, and the insert 2 needs to be rotated 2.5 degrees counterclockwise, if the first method is adopted, such as Figure 4 As shown, the output end of the left crankshaft 32 is slidably and rotatably set in the slide groove 301, and the output end of the right crankshaft 32 is rotatably set in the rotation groove 302, so that the input end of the right crankshaft 32 remains stationary, then the angle α that the input end of the left crankshaft 32 needs to rotate counterclockwise is 20.18 degrees; if the second method is adopted, as Figure 5As shown, the output end of the left crankshaft 32 is rotated and set in the rotating groove 302, and the output end of the right crankshaft 32 is slid and rotated in the sliding groove 301, so that the input end of the left crankshaft 32 remains stationary, and the angle β that the input end of the right crankshaft 32 needs to rotate clockwise is 20.83 degrees. It can be seen that when the insert 2 is rotated at the same angle, the angles of rotation of the input ends of the two crankshafts 32 are different, that is, when the insert 2 is rotated, one crankshaft 32 can achieve rapid adjustment of the insert 2, and the other crankshaft 32 can achieve fine adjustment of the insert 2, so that which crankshaft 32 to adjust can be selected according to actual needs.

[0070] To prevent the adjustment mechanism 3 from contacting the injection molding material, the insert 2 is set against the inner wall of the mold groove 101, and a mounting groove 201 is opened on the side of the insert 2 close to the inner wall of the mold groove 101, and the fixing frame 31 is fixedly set in the mounting groove 201, so that the output end of the crankshaft 32 is also located in the mounting groove 201.

[0071] like Figure 8 As shown, the crankshaft 32 includes a first shaft body 321, a connecting plate 322, a second shaft body 323 and a top screw 324. The first shaft body 321 passes through and is rotatably set on the lower mold base 1. The second shaft body 323 is parallel to the first shaft body 321 and is spaced apart, and is respectively fixedly set on both sides of the connecting plate 322. The second shaft body 323 is slidably set in the slide groove 301. The top screw 324 passes through and is slidably set in the second shaft body 323, and is connected to the connecting plate 322 by threaded cooperation. The top screw 324 is also located in the connecting plate 322. When the top screw 324 is screwed, the top screw 324 can be moved along its axial direction on the connecting plate 322, so that the top screw 324 can extend out of the second shaft body 323 and be rotatably set in the rotating groove 302.

[0072] In some embodiments, when the connecting plate 322 is parallel to the length direction of the slide slot 301 , it is preferred to make the second shaft 323 symmetrical to the first shaft 321 about the center point of the slide slot 301 , thereby improving the utilization rate of the installation slot 201 and the symmetry of the crankshaft 32 .

[0073] like Figure 8 As shown, it is preferred that the cross-sections of the second shaft 323 and the slide groove 301 are both T-shaped, and the second shaft 323 is a cylindrical structure, so that the second shaft 323 always maintains a connection relationship with the slide groove 301 to avoid the second shaft 323 from being separated from the slide groove 301 during use of the device.

[0074] The second shaft body 323 and the top screw 324 are the output ends of the crankshaft 32. When the top screw 324 is separated from the rotating groove 302, the second shaft body 323 is connected to the slide groove 301 by rotation and sliding. The connection method is a movable connection. When both second shaft bodies 323 are located in the slide groove 301, the position of the insert 2 cannot be fixed. For this reason, a protrusion 303 is provided on the side of the top screw 324 away from the end of the connecting plate 322, and a through hole is provided in the second shaft body 323. The through hole 304 and the opening and closing seam 305, the through hole 304 is a stepped hole, the end of the through hole 304 away from the connecting plate 322 is a large hole portion 3041, and the end of the through hole 304 close to the connecting plate 322 is a small hole portion 3042, the inner diameter of the large hole portion 3041 is larger than the inner diameter of the small hole portion 3042, and the inner diameter of the large hole portion 3041 is equal to the inner diameter of the rotating groove 302 and the outer diameter of the protrusion 303, and the inner diameter of the small hole portion 3042 is equal to the outer diameter of the top screw 324, as shown in FIG. Figure 6-Figure 8 As shown, since the opening and closing seam 305 is connected with the large hole portion 3041 and the small hole portion 3042, when the top screw 324 drives the protrusion 303 to move into the rotating groove 302, the protrusion 303 will be rotatably connected with the rotating groove 302. When the top screw 324 drives the protrusion 303 to move completely into the large hole portion 3041, the protrusion 303 will be separated from the rotating groove 302, and only the second shaft body 323 will be connected to the slide groove 301. When the top screw 324 drives the protrusion 303 to move into the small hole portion 3042, the second shaft body 323 will be supported, so that the opening and closing seam 305 is expanded, and the second shaft body 323 is supported against the inner wall of the slide groove 301, thereby supporting and fixing the second shaft body 323 and the fixing frame 31 to achieve the fixation of the position of the insert 2.

[0075] like Fig.10As shown, it is preferred that the rotation groove 302 penetrates to the side of the fixing frame 31 away from the connecting plate 322, and the top screw 324 penetrates the connecting plate 322, so that the top screw 324 can move between the fixing frame 31, the second shaft body 323 and the connecting plate 322, and the depth of the large hole portion 3041 should not be less than the axial length of the protrusion 303 along the large hole portion 3041, so that the top screw 324 can achieve different functions, specifically: first, when the end of the top screw 324 away from the connecting plate 322 is located in the rotation groove 302, the protrusion 303 or the local part of the protrusion 303 The protrusion 303 is located in the large hole 3041 and not in the small hole 3042, and the end of the top screw 324 away from the rotating groove 302 is located in the connecting plate 322, so that the output end of the crankshaft 32 is rotatably set in the rotating groove 302; then, when the end of the top screw 324 away from the connecting plate 322 is flush with the end of the second shaft body 323 away from the connecting plate 322, the protrusion 303 is located in the large hole 3041 and not in the small hole 3042, and the end of the top screw 324 away from the rotating groove 302 is located in the connecting plate 322, so that the top screw 324 and the rotating groove 302 are connected. The groove 302 is separated, and only the second shaft body 323 is allowed to slide and rotate in the sliding groove 301; then, when the end of the top screw 324 away from the connecting plate 322 is located in the large hole portion 3041, and the part of the protrusion 303 is located in the small hole portion 3042, the second shaft body 323 abuts against the inner wall of the sliding groove 301, and the end of the top screw 324 away from the rotating groove 302 is located in the connecting plate 322, thereby fixing the second shaft body 323 and the fixing frame 31 to prevent the crankshaft 32 from driving the fixing frame 31 and the insert 2 to change position; finally, the top screw 324 is When the end of 24 away from the connecting plate 322 is flush with the end of the large hole portion 3041 close to the small hole portion 3042, the protrusion 303 is located in the small hole portion 3042, the second shaft body 323 abuts against the inner wall of the slide groove 301, and the end of the top screw 324 away from the rotating groove 302 extends out of the connecting plate 322 and abuts against the inner wall of the mold groove 101, so that the connecting plate 322, the second shaft body 323, the fixing frame 31 and the lower mold base 1 are fixed in position, avoiding the first shaft body 321 from shaking due to external interference, thereby achieving the effect of preventing misoperation.

[0076] The above different states are all based on the rotation of the top screw 324. However, the top screw 324 is located in the installation groove 201. In order to facilitate the rotation of the top screw 324, Fig. 9 As shown, an operating hole 306 is provided on one side of the fixing frame 31 away from the connecting plate 322, so that the length of the operating hole 306 is equal to the length of the slide groove 301, the width of the operating hole 306 is smaller than the inner diameter of the rotating groove 302, and the operating hole 306 is connected to both the slide groove 301 and the rotating groove 302; at the same time, the insert 2 is configured to include an insert body 21, a movable cover 22 and a clamping rod 23, as shown in FIG. Fig.11As shown, the insert body 21 is disposed in contact with the mold groove 101, the mounting groove 201 is disposed on a side of the insert body 21 close to the mold groove 101, and an exposure hole 202 is provided on a side of the insert body 21 away from the mold groove 101, and the exposure hole 202 is connected to the mounting groove 201 and the operation hole 306; the movable cover 22 is detachably fixed in the exposure hole 202, as shown in FIG. Figure 7 As shown, by removing the movable cover 22 , the upper end of the top screw 324 can be exposed to the external environment, thereby facilitating the rotation of the top screw 324 .

[0077] The clamping rod 23 serves to position the movable cover 22 and the fixing frame 31. The clamping rod 23 is fixedly disposed on the movable cover 22 and is clamped with the mounting groove 201, the exposure hole 202 and the operating hole 306. When the movable cover 22 and the fixing frame 31 are assembled to the insert body 21, the mounting groove 201, the exposure hole 202 and the operating hole 306 are aligned by clamping the clamping rod 23 with the mounting groove 201, the exposure hole 202 and the operating hole 306.

[0078] like Figure 8 and Fig.10 As shown, in order to maintain the rotation stability of the protrusion 303 and the rotating groove 302 and allow the protrusion 303 to move smoothly in each slot hole, the outer diameter of the protrusion 303 is kept unchanged along the direction from the top screw 324 away from the end of the connecting plate 322 to the direction from the top screw 324 close to the end of the connecting plate 322, and then gradually decreases.

[0079] The driving mechanism 4 is used to rotate the input end of the crankshaft 32. The driving mechanism 4 includes two worm wheels 41, two worms 42, a synchronous shaft 43, three gears 44 and a support seat 45. Fig.12 and Fig.13 As shown, the two worm wheels 41 are coaxially fixed on the input ends of the two crankshafts 32, and the two worms 42 are rotatably set on the lower die base 1 and meshed with the two worm wheels 41 respectively. When the worm 42 is rotated, the corresponding input end of the crankshaft 32 can be driven to rotate, thereby realizing the rotation control of the crankshaft 32; at the same time, since the worm wheel 41 cannot drive the worm 42 to rotate, it can also prevent the insert 2 from rotating due to external interference.

[0080] When the insert 2 is translated, the two worm gears 42 need to rotate synchronously. For this purpose, the synchronization shaft 43 is rotatably set on the lower mold base 1, and the three gears 44 are coaxially fixed on the two worm gears 42 and the synchronization shaft 43, so that the gear 44 on the synchronization shaft 43 is meshed with the other two gears 44. When the synchronization shaft 43 is rotated, the other two worm gears 42 can be driven to rotate synchronously, thereby making the two crankshafts 32 rotate synchronously.

[0081] When the insert 2 is rotated, the two worms 42 need to be rotated asynchronously, so the gear 44 on the synchronization shaft 43 needs to be separated from the other two gears 44. To this end, the synchronization shaft 43 is slidably and rotatably set on the lower die base 1, and the support base 45 is set to include a base 451, a sliding seat 452 and a spring 453, as shown in FIG. Fig.14 and Fig.15 As shown, the base 451 is fixedly set on the lower mold base 1, and the synchronous shaft 43 is slidably set on the base 451; the sliding seat 452 is slidably set on the base 451 and abuts against the bottom side of the synchronous shaft 43; the spring 453 is fixedly set on the lower mold base 1 and abuts against the bottom side of the sliding seat 452. In the natural state, the elastic force of the spring 453 is balanced with the gravity of the synchronous shaft 43 and the sliding seat 452, and the gear 44 on the synchronous shaft 43 is meshed with the other two gears 44. The rotation of the synchronous shaft 43 can drive the two worms 42 to rotate synchronously. When the worm 42 is rotated, the rotation of the gear 44 on the worm 42 will apply external force to the synchronous shaft 43, so that the synchronous shaft 43 slides in the vertical direction, causing the gear 44 on the synchronous shaft 43 to separate from the other two gears 44, thereby realizing the asynchronous rotation of the two worms 42.

[0082] The use method of a mold insert adjustment method of the present invention is as follows:

[0083] S1, comparing the processing drawings of two workpieces with the same surface pattern shape but different positions, and determining the moving path of the insert 2 in the mold groove 101 when the mold is converted according to the processing drawings of the two workpieces;

[0084] S2, determining the displacement of the output ends of the two crankshafts 32 according to the moving path of the insert 2, the displacement of the output ends of the two crankshafts 32 including the rotation angle of the output ends of the two crankshafts 32 in the slide groove 301 and / or the rotating groove 302, the sliding length of the output ends of the two crankshafts 32 in the slide groove 301, and the time when the output ends of the two crankshafts 32 leave the rotating groove 302;

[0085] S3, determining the rotation angle of the input ends of the two crankshafts 32 and the matching conditions between the output ends of the crankshafts 32 and the slide groove 301 and the rotation groove 302 according to the displacement of the output ends of the two crankshafts 32;

[0086] S4, according to the data of step S3, the worm 42, the synchronous shaft 43 and the top screw 324 are respectively controlled to rotate, so as to adjust the input end and the output end of the crankshaft 32, move the insert 2 to the specified position, and realize the conversion of the mold.

[0087] The above description is only a preferred embodiment of the present invention and is 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 mold insert installation structure, characterized in that: It comprises a lower die base (1), an insert (2) and an adjustment mechanism (3), wherein: A mold groove (101) is formed on the top side of the lower mold base (1); The insert (2) is disposed in contact with the mold groove (101), and a mounting groove (201) is provided on a side thereof close to the mold groove (101); The adjusting mechanism (3) comprises a fixing frame (31) and a crankshaft (32); the fixing frame (31) is fixedly arranged in the mounting groove (201), and is provided with a slide groove (301) and a rotation groove (302) therein, and the rotation groove (302) is located in the slide groove (301); the input end of the crankshaft (32) passes through and is rotationally arranged on the lower die base (1), and the output end thereof is rotationally arranged in the slide groove (301) and slides along the length direction of the slide groove (301), and the output end of the crankshaft (32) can be rotationally arranged in the rotation groove (302); Two adjusting mechanisms (3) are provided, and the two adjusting mechanisms (3) are arranged in parallel and at intervals along the length direction of the slide groove (301); The crankshaft (32) comprises a first shaft body (321), a connecting plate (322), a second shaft body (323) and a top screw (324), wherein: The first shaft (321) penetrates through and is rotatably disposed on the lower die base (1); The second shaft (323) is parallel to and spaced from the first shaft (321), and is fixedly disposed on both sides of the connecting plate (322). The second shaft (323) is slidably disposed in the slide groove (301), and when the connecting plate (322) is parallel to the length direction of the slide groove (301), the second shaft (323) and the first shaft (321) are symmetrical about the center point of the slide groove (301). The top screw (324) passes through and is slidably disposed in the second shaft body (323), and is connected to the connecting plate (322) by threaded engagement; the top screw (324) is located in the connecting plate (322) and the second shaft body (323), and is rotatably disposed in the rotating groove (302).

2. A mold insert installation structure according to claim 1, characterized in that: A protrusion (303) is provided on the peripheral side of the top screw (324) at one end away from the connecting plate (322); A through hole (304) and an opening and closing seam (305) are provided in the second shaft body (323); the through hole (304) is a stepped hole; the end of the through hole (304) away from the connecting plate (322) is a large hole portion (3041); the end of the through hole (304) close to the connecting plate (322) is a small hole portion (3042); the inner diameter of the large hole portion (3041) is equal to the inner diameter of the rotating groove (302) and the outer diameter of the protruding portion (303); the inner diameter of the small hole portion (3042) is equal to the outer diameter of the top screw (324); the opening and closing seam (305) is connected to the large hole portion (3041) and the small hole portion (3042).

3. A mold insert installation structure according to claim 2, characterized in that: The rotating groove (302) penetrates to a side of the fixing frame (31) away from the connecting plate (322), the top screw (324) penetrates the connecting plate (322), and the depth of the large hole portion (3041) is not less than the axial length of the protruding portion (303) along the large hole portion (3041); When one end of the top screw (324) away from the connecting plate (322) is located in the rotating groove (302), the protrusion (303) or a part of the protrusion (303) is located in the rotating groove (302) and is not located in the small hole (3042), and the end of the top screw (324) away from the rotating groove (302) is located in the connecting plate (322); When one end of the top screw (324) away from the connecting plate (322) is flush with one end of the second shaft (323) away from the connecting plate (322), the protrusion (303) is located in the large hole (3041) and is not located in the small hole (3042), and one end of the top screw (324) away from the rotating groove (302) is located in the connecting plate (322); When one end of the top screw (324) away from the connecting plate (322) is located in the large hole portion (3041) and a part of the protrusion (303) is located in the small hole portion (3042), the second shaft (323) abuts against the inner wall of the slide groove (301), and one end of the top screw (324) away from the rotating groove (302) is located in the connecting plate (322); When one end of the top screw (324) away from the connecting plate (322) is flush with one end of the large hole portion (3041) close to the small hole portion (3042), the protrusion (303) is located in the small hole portion (3042), the second shaft (323) abuts against the inner wall of the slide groove (301), and one end of the top screw (324) away from the rotating groove (302) extends out of the connecting plate (322) and abuts against the inner wall of the mold groove (101).

4. A mold insert installation structure according to claim 3, characterized in that: An operating hole (306) is provided on a side of the fixing frame (31) away from the connecting plate (322); the length of the operating hole (306) is equal to the length of the sliding groove (301), and the width thereof is smaller than the inner diameter of the rotating groove (302); the operating hole (306) is in communication with both the sliding groove (301) and the rotating groove (302); The insert (2) comprises an insert body (21), a movable cover (22) and a clamping rod (23); the insert body (21) is arranged in contact with the mold groove (101); the mounting groove (201) is arranged on a side of the insert body (21) close to the mold groove (101); an exposure hole (202) is provided on a side of the insert body (21) away from the mold groove (101); the exposure hole (202) is connected to the mounting groove (201) and the operating hole (306); the movable cover (22) is detachably fixed in the exposure hole (202); the clamping rod (23) is fixedly arranged on the movable cover (22) and is clamped with the mounting groove (201), the exposure hole (202) and the operating hole (306).

5. A mold insert installation structure according to claim 1, characterized in that: It also includes a driving mechanism (4), the driving mechanism (4) including two worm wheels (41) and two worms (42), wherein: The two worm gears (41) are coaxially fixed on the input ends of the two crankshafts (32); The two worms (42) are both rotatably disposed on the lower die base (1) and are respectively meshed with the two worm wheels (41).

6. A mold insert installation structure according to claim 5, characterized in that: The driving mechanism (4) further comprises a synchronization shaft (43), three gears (44) and a support seat (45), wherein: The synchronization shaft (43) is slidably and rotatably arranged on the lower die base (1); The three gears (44) are coaxially fixed on the two worm gears (42) and the synchronization shaft (43), respectively; The support seat (45) comprises a base (451), a sliding seat (452) and a spring (453); the base (451) is fixedly arranged on the lower die seat (1), and the synchronization shaft (43) is slidably arranged on the base (451); the sliding seat (452) is slidably arranged on the base (451) and abuts against the bottom side of the synchronization shaft (43); the spring (453) is fixedly arranged on the lower die seat (1) and abuts against the bottom side of the sliding seat (452); In a natural state, the gear (44) on the synchronizing shaft (43) meshes with the other two gears (44); when the synchronizing shaft (43) slides due to an external force, the gear (44) on the synchronizing shaft (43) separates from the other two gears (44).

7. A mold insert installation structure according to claim 1, characterized in that: The cross sections of the second shaft (323) and the sliding groove (301) are both T-shaped.

8. A mold insert installation structure according to claim 3, characterized in that: The outer diameter of the protrusion (303) first remains constant and then gradually decreases along the direction from the end of the top screw (324) away from the connecting plate (322) to the end of the top screw (324) close to the connecting plate (322).

9. A method for adjusting a mold insert, using the mold insert mounting structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, determining a moving path of the insert (2) in the mold cavity (101) according to machining drawings of the two workpieces; S2, determining the displacement of the output ends of the two crankshafts (32) according to the moving path of the insert (2), which includes the rotation angle of the output ends of the two crankshafts (32) in the slide groove (301) and / or the rotation groove (302) and the sliding length of the output ends of the two crankshafts (32) in the slide groove (301); S3, determining the rotation angles of the input ends of the two crankshafts (32) and the matching conditions between the output ends of the crankshafts (32) and the slide groove (301) and the rotation groove (302) according to the displacements of the output ends of the two crankshafts (32); S4, adjusting the input end and the output end of the crankshaft (32) according to the data of step S3, and moving the insert (2) to a specified position.

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