Precise quick-change die

Abstract

The utility model discloses a precise quick-change mold, which comprises a front mold, a rear mold, a rear mold plate and a first groove, the front mold comprises a front mold frame and a front mold core component, a front mold plate is arranged at the rear end of the front mold frame, the rear end of the front mold frame is provided with the first groove penetrating through the front mold plate, and the front mold core component is embedded into the first groove; the rear mold comprises a rear mold frame and a rear mold core assembly, a rear mold plate is arranged at the front end of the rear mold frame, a second groove penetrating through the rear mold plate is formed in the front end of the rear mold frame, and the rear mold core assembly is embedded into the second groove; wherein the front mold plate is provided with a locking mechanism, the locking mechanism is used for locking the front mold core assembly in the first groove, and / or the rear mold plate is provided with a locking mechanism, and the locking mechanism is used for locking the rear mold core assembly in the second groove; the front mold plate is provided with a first process positioning hole, the rear mold plate is provided with a second process positioning hole, and the second process positioning hole is aligned with the first process positioning hole in the mold closing direction. According to the precise quick-change die, quick die change can be achieved, and the precision of the die is high.

Description

Technical Field

[0001] The utility model relates to the field of molds, and particularly to a precision quick-change mold. Background Art

[0002] In the injection molding industry, molds are one of the essential elements for manufacturing products. With the rapid development of the plastic industry, injection molds have been greatly promoted. In traditional molds, the mold core for forming and the mold base for installing the mold core are integrated, and the whole mold is installed on the injection molding machine by mechanical connection. When the mold needs to be replaced, the whole mold must be disassembled, which is very troublesome. Moreover, with the increasing requirements for the size and appearance of products, the precision requirements for molds are also getting higher and higher. However, the precision of traditional molds often cannot meet the current product size requirements. Insufficient mold precision leads to part fracture during long-term production, and frequent part replacement and mold repair affect production efficiency. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a precision quick-change mold, which can realize quick mold change and has high mold precision.

[0004] The precision quick-change mold according to an embodiment of the utility model includes:

[0005] A front mold, the front mold includes a front mold base and a front mold core assembly. A front template is provided at the rear end of the front mold base, and a first groove penetrating the front template is provided at the rear end of the front mold base. The front mold core assembly is embedded in the first groove;

[0006] A rear mold, the rear mold includes a rear mold base and a rear mold core assembly. A rear template is provided at the front end of the rear mold base, and a second groove penetrating the rear template is provided at the front end of the rear mold base. The rear mold core assembly is embedded in the second groove;

[0007] Wherein, a locking mechanism is provided on the front template, and the locking mechanism is used to lock the front mold core assembly in the first groove, and / or, a locking mechanism is provided on the rear template, and the locking mechanism is used to lock the rear mold core assembly in the second groove; a first process positioning hole is provided on the front template, and a second process positioning hole is provided on the rear template. Along the mold closing direction, the second process positioning hole is aligned with the first process positioning hole.

[0008] The precision quick-change mold according to an embodiment of the utility model has at least the following beneficial effects:

[0009] When changing the mold, it is not necessary to remove the whole mold from the injection molding machine. Only the front mold core assembly needs to be taken out from the first groove of the front mold base for replacement, and the rear mold core assembly needs to be taken out from the second groove of the rear mold base for replacement, which can save operation time and operation difficulty and achieve rapid mold change. Moreover, in the mold processing stage, the first process positioning holes on the front template and the second process positioning holes on the rear template can be separately machined first, and then the front template and the rear template are assembled together to align the first process positioning holes and the second process positioning holes. Then, a positioning structure can be inserted into the first process positioning holes and the second positioning holes to assemble the front template and the rear template together. After that, the front template and the rear template are machined together by finish machining to ensure that the machining surface sizes of the front template and the rear template are the same, thereby improving the accuracy of the mold.

[0010] According to some embodiments of the present invention, the first process positioning holes include a plurality of first screw holes, the second process positioning holes include a plurality of second screw holes, and along the mold closing direction, the first screw holes are aligned with the second screw holes.

[0011] According to some embodiments of the present invention, the first process positioning holes further include a plurality of first pin holes, the second process positioning holes further include a plurality of second pin holes, and along the mold closing direction, the first pin holes are aligned with the second pin holes.

[0012] According to some embodiments of the present invention, the front mold core assembly includes a front mold core, the front mold core is provided with a first installation through groove and a third process positioning hole, the first installation through groove is used for installing the front mold insert, the rear mold core assembly includes a rear mold core, the rear mold core is provided with a second installation through groove and a fourth process positioning hole, the second installation through groove is used for installing the rear mold insert, and wherein, along the mold closing direction, the third process positioning hole is aligned with the fourth process positioning hole.

[0013] According to some embodiments of the present invention, the third process positioning holes include a plurality of third screw holes and a plurality of third pin holes, the fourth process positioning holes include a plurality of fourth screw holes and a plurality of fourth pin holes, and along the mold closing direction, the third screw holes are aligned with the fourth screw holes, and the third pin holes are aligned with the fourth pin holes.

[0014] According to some embodiments of the present invention, the locking mechanism includes a locking part and a positioning member, the locking part is rotatably arranged on the front template or the rear template, and during the rotation of the locking part, it can block and avoid the rear end of the front mold core assembly, or block and avoid the front end of the rear mold core assembly, and the positioning member is used to fix the locking part when the locking part blocks the front mold core assembly or the rear mold core assembly.

[0015] According to some embodiments of the present utility model, the positioning member includes an elastic ball head plunger, the elastic ball head plunger is provided with a ball head that can elastically move perpendicular to the rotation direction of the locking portion, the locking portion is provided with a concave position for the ball head to be embedded.

[0016] According to some embodiments of the present utility model, the front template or the rear template is provided with a through mounting hole, the locking mechanism further includes a mounting screw, a part of the mounting screw is inserted through the mounting hole, the locking portion includes a mounting shaft and a locking block provided at one end of the mounting shaft, the mounting shaft is inserted into the mounting hole and is threadedly connected to the mounting screw, and the locking block and the head portion of the mounting screw respectively abut against both ends in the length direction of the mounting hole.

[0017] According to some embodiments of the present utility model, the end of the locking block away from the mounting shaft is provided with an internal hexagonal hole for a hexagonal wrench to be embedded.

[0018] According to some embodiments of the present utility model, the locking block is provided with an indicating line, and a blocking mark and an avoidance mark are provided on the outside of one end of the mounting hole. When the locking block rotates to make the indicating line point to the blocking mark, the locking block can block the rear end of the front mold core assembly or the front end of the rear mold core assembly. When the locking block rotates to make the indicating line point to the avoidance mark, the locking block can avoid the rear end of the front mold core assembly or the front end of the rear mold core assembly.

[0019] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0020] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0021] Figure 1 is a schematic installation structure diagram of the precision quick-change mold according to the embodiment of the present utility model;

[0022] Figure 2 is an exploded schematic diagram of the installation state of the precision quick-change mold according to the embodiment of the present utility model;

[0023] Figure 3 is a schematic structure diagram of the front mold according to the embodiment of the present utility model;

[0024] Figure 4 is an exploded schematic structure diagram of the front mold according to the embodiment of the present utility model;

[0025] Figure 5 is a schematic structure diagram of the rear mold according to the embodiment of the present utility model;

[0026] Figure 6 It is a schematic exploded view of the structure of the rear mold in the embodiment of the present utility model;

[0027] Figure 7 It is a schematic view of the state during the assembly and processing of the front template and the rear template in the embodiment of the present utility model;

[0028] Figure 8 It is a schematic view of the state during the assembly and processing of the front mold core and the rear mold core in the embodiment of the present utility model;

[0029] Figure 9 It is a schematic installation structure view of the first locking mechanism in the embodiment of the present utility model;

[0030] Figure 10 It is a schematic installation structure view of the second locking mechanism in the embodiment of the present utility model.

[0031] Reference numerals in the drawings:

[0032] Front mold 100, front mold base 110, front mold core assembly 120, front template 130, first screw hole 131, first pin hole 132, first installation hole 133, first blocking mark 134, first avoidance mark 135, first groove 140, front mold core 150, first installation through groove 151, third screw hole 152, third pin hole 153;

[0033] Rear mold 200, rear mold base 210, rear mold core assembly 220, rear template 230, second screw hole 231, second pin hole 232, second installation hole 233, second blocking mark 234, second avoidance mark 235, second groove 240, rear mold core 250, second installation through groove 251, fourth screw hole 252, fourth pin hole 253, ejection mechanism 260, embedding groove 261, ejector pin driving plate 270, plug pin 280;

[0034] First locking mechanism 300, first locking part 310, first concave position 311, first installation shaft 312, first locking block 313, first hexagon socket hole 314, first indication line 315, first elastic ball plunger 320, first ball head 321, first installation screw 330, first fixed seat 340, first gasket 350;

[0035] Second locking mechanism 400, second locking part 410, second concave position 411, second installation shaft 412, second locking block 413, second hexagon socket hole 414, second indication line 415, second elastic ball plunger 420, second ball head 421, second installation screw 430, second fixed seat 440, second gasket 450. Detailed implementation manners

[0036] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.

[0037] In the description of the present utility model, it should be understood that with respect to the orientation description, such as up, down, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

[0038] In the description of the present utility model, "a plurality of" refers to more than two. If there is a description of the first and the second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0039] In the description of the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0040] Refer to Figures 1 to 10 As shown, a precision quick-change mold according to an embodiment of the present utility model includes a front mold 100 and a rear mold 200.

[0041] The front mold 100 includes a front mold base 110 and a front mold core assembly 120. A front template 130 is provided at the rear end of the front mold base 110, and a first groove 140 penetrating the front template 130 is provided at the rear end of the front mold base 110. The first groove 140 forms a first mounting opening on the front template 130, and the front mold core assembly 120 is embedded in the first groove 140. Among them, the front mold core assembly 120 can be taken out from the first mounting opening formed by the first groove 140 on the front template 130.

[0042] The rear mold 200 includes a rear mold base 210 and a rear mold core assembly 220. A rear template 230 is provided at the front end of the rear mold base 210, and a second groove 240 penetrating the rear template 230 is provided at the front end of the rear mold base 210. The second groove 240 forms a second mounting opening on the rear template 230, and the rear mold core assembly 220 is embedded in the second groove 240. Among them, the rear mold core assembly 220 can be taken out from the second mounting opening formed by the second groove 240 on the rear template 230.

[0043] Among them, the front template 130 is provided with a locking mechanism for locking the front mold core assembly 120 in the first groove 140, and / or the rear template 230 is provided with a locking mechanism for locking the rear mold core assembly 220 in the second groove 240, that is, the following three solutions are included:

[0044] Solution A: A locking mechanism is provided on the front template 130, and a locking mechanism is also provided on the rear template 230;

[0045] Solution B: A locking mechanism is provided on the front template 130, and no locking mechanism is provided on the rear template 230;

[0046] Solution C: No locking mechanism is provided on the front template 130, and a locking mechanism is provided on the rear template 230;

[0047] In this embodiment, to ensure higher mold change efficiency, Solution A is adopted, that is, locking mechanisms are correspondingly provided on both the front template 130 and the rear template 230. For the convenience of distinction, the locking mechanism corresponding to the front template 130 is named the first locking mechanism 300, and the locking mechanism corresponding to the rear template 230 is named the second locking mechanism 400. When products with different part numbers need to be produced, the first locking mechanism 300 is made to release the locking of the front mold core assembly 120, and then the front mold core assembly 120 is taken out from the first groove 140 of the front mold base 110 for replacement. At the same time, the second locking mechanism 400 is made to release the locking of the rear mold core assembly 220, and then the rear mold core assembly 220 is taken out from the second groove 240 of the rear mold base 210 for replacement. There is no need to remove the entire mold from the injection molding machine, which can save operation time and operation difficulty and achieve rapid mold change.

[0048] In addition, the front template 130 is provided with a first process positioning hole, and the rear template 230 is provided with a second process positioning hole. Along the mold closing direction, the second process positioning hole is aligned with the first process positioning hole. With such a setting, when machining the front template 130 and the rear template 230, the first process positioning hole on the front template 130 and the second process positioning hole on the rear template 230 can be separately machined first. Then, the front template 130 and the rear template 230 are combined, and the first process positioning hole and the second process positioning hole are aligned. Then, a positioning structure can be inserted into the first process positioning hole and the second positioning hole to assemble the front template 130 and the rear template 230 together. After that, the front template 130 and the rear template 230 are machined together, for example, machining the first mounting port and the second mounting port together, and machining the hole positions and slot positions for positioning on the front template 130 and the rear template 230 together, ensuring that the machining surface dimensions of the front template 130 and the rear template 230 are consistent and improving the accuracy of the mold.

[0049] For the precision quick-change mold configured with the above structure, when changing the mold, it is not necessary to remove the entire mold from the injection molding machine. It only requires taking out the front mold core assembly 120 from the first groove 140 of the front mold base 110 for replacement, and taking out the rear mold core assembly 220 from the second groove 240 of the rear mold base 210 for replacement, which can save operation time and operation difficulty and achieve quick mold change. Moreover, during the mold processing stage, the first process positioning holes on the front template 130 and the second process positioning holes on the rear template 230 can be separately machined first. Then, the front template 130 and the rear template 230 are assembled together to align the first process positioning holes and the second process positioning holes. Then, a positioning structure can be inserted into the first process positioning holes and the second positioning holes to assemble the front template 130 and the rear template 230 together. After that, the front template 130 and the rear template 230 are machined together with precision to ensure that the machining surface dimensions of the front template 130 and the rear template 230 are consistent, improving the precision of the mold.

[0050] Refer to Figure 3 、 Figure 5 and Figure 7As shown, in some embodiments of the present utility model, the first process positioning holes include a plurality of first screw holes 131, and the second process positioning holes include a plurality of second screw holes 231. Along the mold closing direction, the first screw holes 131 are aligned with the second screw holes 231, the first screw holes 131 and the second screw holes 231 correspond to each other one by one, and screws can be inserted into the first screw holes 131 and the second screw holes 231 to relatively fix the front template 130 and the rear template 230; specifically, in the mold processing stage, the first screw holes 131 are first processed separately on the front template 130, and the second screw holes 231 are processed on the rear template 230, and then the front template 130 and the rear template 230 are relatively fixed by inserting bolts into the first screw holes 131 and the second screw holes 231, and then the front template 130 and the rear template 230 are machined together, for example, the first mounting opening and the second mounting opening are machined together, and the hole positions and slot positions for positioning on the front template 130 and the rear template 230 are machined together to ensure that the machining surface dimensions of the front template 130 and the rear template 230 are the same. Further, the first process positioning holes further include a plurality of first pin holes 132, the second process positioning holes further include a plurality of second pin holes 232, the first pin holes 132 and the second pin holes 232 correspond to each other one by one, and the extending direction of the first pin holes 132 is the same as that of the first screw holes 131, the extending direction of the second pin holes 232 is the same as that of the second screw holes 231, along the mold closing direction, the first pin holes 132 are aligned with the second pin holes 232, and pins can be inserted into the first pin holes 132 and the second pin holes 232 to relatively position the front template 130 and the rear template 230; specifically, in the mold processing stage, the first screw holes 131 and the first pin holes 132 are first processed separately on the front template 130, and the second screw holes 231 and the second pin holes 232 are processed on the rear template 230, and then the front template 130 and the rear template 230 are assembled together, and the front template 130 and the rear template 230 are relatively positioned by inserting pins into the first pin holes 132 and the second pin holes 232, and then screws are inserted into the first screw holes 131 and the second screw holes 231 to fix the front template 130 and the rear template 230 together, and then the front template 130 and the rear template 230 are machined together. By providing the first pin holes 132 and the second pin holes 232, when the front template 130 and the rear template 230 are assembled and machined together, pins can be inserted into the first pin holes 132 and the second pin holes 232 to reduce the stress on the screws used to fix the front template 130 and the rear template 230.

[0051] Refer to Figure 2 、 Figure 4 、 Figure 6 and Figure 8As shown, in some embodiments of the present utility model, the front mold core assembly 120 includes a front mold core 150. The front mold core 150 is provided with a first installation through slot 151 and a third process positioning hole. The first installation through slot 151 is used for installing a front mold core (not shown in the figure). The rear mold core assembly 220 includes a rear mold core 250. The rear mold core 250 is located at the front end of the rear mold core assembly 220. The rear mold core 250 is provided with a second installation through slot 251 and a fourth process positioning hole. The second installation through slot 251 is used for installing a rear mold core (not shown in the figure). Among them, along the mold closing direction, the third process positioning hole is aligned with the fourth process positioning hole. With such a setting, when machining the front mold core 150 and the rear mold core 250, the third process positioning hole on the front mold core 150 and the fourth process positioning hole on the rear mold core 250 can be separately machined first. Then, the front mold core 150 and the rear mold core 250 are combined together to align the third process positioning hole and the fourth process positioning hole. Then, a positioning structure can be inserted into the third process positioning hole and the fourth positioning hole to assemble the front mold core 150 and the rear mold core 250 together. After that, the front mold core 150 and the rear mold core 250 are machined together for finishing, such as machining the first installation through slot 151 and the second installation through slot 251 together, and machining the hole positions and slot positions for positioning on the front mold core 150 and the rear mold core 250 together, so as to ensure that the machining surface dimensions of the front mold core 150 and the rear mold core 250 are consistent and improve the accuracy of the mold.

[0052] Refer to Figure 4 、 Figure 6 and Figure 8As shown, in some embodiments of the present utility model, the third process positioning holes include a plurality of third screw holes 152 and a plurality of third pin holes 153, and the fourth process positioning holes include a plurality of fourth screw holes 252 and a plurality of fourth pin holes 253. Along the mold closing direction, the third screw holes 152 are aligned with the fourth screw holes 252, and the third pin holes 153 are aligned with the fourth pin holes 253. Among them, the third screw holes 152 and the fourth screw holes 252 correspond one by one, and screws can be inserted into the third screw holes 152 and the fourth screw holes 252 to relatively fix the front mold core 150 and the rear mold core 250. The third pin holes 153 and the fourth pin holes 253 correspond one by one, and pins can be inserted into the third pin holes 153 and the fourth pin holes 253 to relatively position the front mold core 150 and the rear mold core 250. The extending direction of the third pin holes 153 is the same as that of the third screw holes 152, and the extending direction of the fourth pin holes 253 is the same as that of the fourth screw holes 252. Specifically, in the mold processing stage, the third screw holes 152 and the third pin holes 153 can be processed separately on the front mold core 150, and the fourth screw holes 252 and the fourth pin holes 253 can be processed on the rear mold core 250. Then, the front mold core 150 and the rear mold core 250 are assembled together. By inserting pins into the third pin holes 153 and the fourth pin holes 253 to relatively position the front mold core 150 and the rear mold core 250, and then inserting screws into the third screw holes 152 and the fourth screw holes 252 to fix the front mold core 150 and the rear mold core 250 together, and then performing finish machining on the front mold core 150 and the rear mold core 250 together. By providing the third pin holes 153 and the fourth pin holes 253, when assembling and processing the front mold core 150 and the rear mold core 250 together, pins can be inserted into the third pin holes 153 and the fourth pin holes 253 to reduce the stress on the screws used to fix the front mold core 150 and the rear mold core 250.

[0053] It should be noted that, as shown in Figure 5 and Figure 6 the rear mold core assembly 220 further includes an ejection mechanism 260. The ejection mechanism 260 is connected to the rear end of the rear mold core 250. A thimble driving plate 270 is provided on the rear mold base 210 at the rear side of the ejection mechanism 260. The thimble driving plate 270 is connected to the ejection mechanism 260. During the mold opening and closing process, the ejection mechanism 260 is driven by the thimble driving plate 270 to complete the plastic part ejection step. Among them, engaging grooves 261 are provided on opposite sides of the ejection mechanism 260. Plug pins 280 are inserted into the thimble driving plate 270. The plug pins 280 are provided in one-to-one correspondence with the engaging grooves 261. The plug pins 280 are embedded into the corresponding engaging grooves 261 to connect the thimble driving plate 270 and the ejection mechanism 260 into one body. When it is necessary to disassemble the rear mold core assembly 220, the plug pins 280 can be pulled out. The ejection mechanism 260 and the thimble driving plate 270 are conventional structures in the mold field. For example, they are recorded in the patent document with the publication number CN203919564U, and will not be described in detail here.

[0054] Referring to Figure 3 、 Figure 5 、 Figure 9 and Figure 10 As shown, in some embodiments of the present utility model, the locking mechanism includes a locking portion and a positioning member. The locking portion is rotatably disposed on the front template 130 or the rear template 230. During the rotation of the locking portion, it can block and avoid the rear end of the front mold core assembly 120, or block and avoid the front end of the rear mold core assembly 220. The positioning member is used to fix the locking portion when the locking portion blocks the front mold core assembly 120 or the rear mold core assembly 220. Specifically, for the convenience of understanding, the locking mechanisms corresponding to the front template 130 and the rear template 230 are distinguished by the first and the second. Among them, the locking mechanism corresponding to the front template 130 is the first locking mechanism 300, and the locking mechanism corresponding to the rear template 230 is the second locking mechanism 400. The first locking mechanism 300 includes a first locking portion 310 and a first positioning member. The first locking portion 310 is rotatably disposed on the front template 130. During the rotation of the first locking portion 310, it can block and avoid the rear end of the front mold core assembly 120, that is, lock and unlock the front mold core assembly 120. The first positioning member is used to fix the first locking portion 310 when the first locking portion 310 locks the front mold core assembly 120, prevent the first locking portion 310 from rotating randomly, and ensure the stability of the first locking portion 310. Similarly, the second locking mechanism 400 includes a second locking portion 410 and a second positioning member. The second locking portion 410 is rotatably disposed on the rear template 230. During the rotation of the second locking portion 410, it can block and avoid the front end of the rear mold core assembly 220, that is, lock and unlock the rear mold core assembly 220. The second positioning member is used to fix the second locking portion 410 when the second locking portion 410 locks the rear mold core assembly 220, prevent the second locking portion 410 from rotating randomly, and ensure the stability of the second locking portion 410. By setting the above structure, the disassembly and replacement of the front mold core assembly 120 and the rear mold core assembly 220 can be facilitated. For example, when replacing the front mold core assembly 120, only need to make the first positioning member release the fixation of the first locking portion 310, then rotate the first locking portion 310 to make it avoid the rear end of the front mold core assembly 120, and then the front mold core assembly 120 can be removed from the front mold base 110. The disassembly and replacement of the rear mold core assembly 220 can be obtained in the same way and will not be elaborated here.

[0055] Referring to Figure 9 and Figure 10As shown, in some embodiments of the present utility model, the positioning member includes an elastic ball plunger. The elastic ball plunger is provided with a ball head that can elastically move perpendicular to the rotation direction of the locking portion. The locking portion is provided with a concave position for the ball head to be embedded. Among them, the first positioning member includes a first elastic ball plunger 320, the first elastic ball plunger 320 is installed on the front template 130, the first elastic ball plunger 320 is provided with a first ball head 321, and the first locking portion 310 is provided with a first concave position 311. The second positioning member includes a second elastic ball plunger 420, the second elastic ball plunger 420 is installed on the rear template 230, the second elastic ball plunger 420 is provided with a second ball head 421, and the second locking portion 410 is provided with a second concave position 411. By setting the above structure, when rotating and adjusting the first locking portion 310, the characteristic that the first ball head 321 can elastically move can be utilized to enable the first ball head 321 to automatically embed into the first concave position 311 of the first locking portion 310 to achieve the fixation of the first locking portion 310. And when releasing the fixation of the first locking portion 310, only a slightly larger rotational force needs to be applied to drive the first locking portion 310 to rotate, and the shape feature of the first ball head 321 can be utilized to enable the first ball head 321 to automatically disengage from the first concave position 311 to achieve the unlocking of the first locking portion 310, and the operation is very convenient. The same applies when rotating and adjusting the second locking portion 410, so it will not be elaborated here.

[0056] Refer to Figure 9 and Figure 10As shown, in some embodiments of the present utility model, the front template 130 or the rear template 230 is provided with a through mounting hole, and the locking mechanism further includes a mounting screw. The mounting screw is partially inserted into the mounting hole. The locking portion includes a mounting shaft and a locking block provided at one end of the mounting shaft. The mounting shaft is inserted into the mounting hole and is threadedly connected to the mounting screw. The locking block and the head portion of the mounting screw respectively abut against both ends in the length direction of the mounting hole. For convenience of distinction, the mounting hole on the front template 130 is named the first mounting hole 133, and the mounting hole on the rear template 230 is named the second mounting hole 233. The first locking mechanism 300 includes a first mounting screw 330. The first mounting screw 330 is partially inserted into the first mounting hole 133. The first locking portion 310 includes a first mounting shaft 312 and a first locking block 313. The first mounting shaft 312 is inserted into the first mounting hole 133 and is threadedly connected to the first mounting screw 330. The first locking block 313 and the head portion of the first mounting screw 330 respectively abut against both ends in the length direction of the first mounting hole 133, thereby rotatably mounting the first locking portion 310 on the front template 130. The structure is simple and the first locking portion 310 is convenient to disassemble and assemble. The second locking mechanism 400 includes a second mounting screw 430. The second mounting screw 430 is partially inserted into the second mounting hole 233. The second locking portion 410 includes a second mounting shaft 412 and a second locking block 413. The second mounting shaft 412 is inserted into the second mounting hole 233 and is threadedly connected to the second mounting screw 430. The second locking block 413 and the head portion of the second mounting screw 430 respectively abut against both ends in the length direction of the second mounting hole 233, thereby rotatably mounting the second locking portion 410 on the rear template 230. The structure is simple and the second locking portion 410 is convenient to disassemble and assemble. It can be imagined that both the first locking block 313 and the second locking block 413 can be set as circular block structures with notches.

[0057] Further, the first locking mechanism 300 further includes a first fixing base 340. The first fixing base 340 is partially inserted into the first mounting hole 133. The interior of the first fixing base 340 is axially penetrated along the axis of the first mounting hole 133, and the dimension of the part of the first fixing base 340 located outside the first mounting hole 133 is larger than the dimension of the first mounting hole 133. The first mounting screw 330 is disposed in the internal through hole of the first fixing base 340. The first mounting shaft 312 is also inserted into the internal through hole of the first fixing base 340 and connected to the first mounting screw 330. A first gasket 350 is sleeved on the first mounting screw 330. The head of the first mounting screw 330 abuts against the first gasket 350, the first gasket 350 abuts against the first fixing base 340, and the first fixing base 340 abuts against one end in the length direction of the first mounting hole 133. By providing the first fixing base 340, when rotating and adjusting the first locking portion 310, the contact between the first locking portion 310 and the first mounting screw 330 and the front template 130 can be reduced, and the wear of the front template 130 can be reduced. Similarly, the second locking mechanism 400 includes a second fixing base 440. The second fixing base 440 is partially inserted into the second mounting hole 233. The interior of the second fixing base 440 is axially penetrated along the axis of the second mounting hole 233, and the dimension of the part of the second fixing base 440 located outside the second mounting hole 233 is larger than the dimension of the second mounting hole 233. The second mounting screw 430 is disposed in the internal through hole of the second fixing base 440. The second mounting shaft 412 is also inserted into the internal through hole of the second fixing base 440 and connected to the second mounting screw 430. A second gasket 450 is sleeved on the second mounting screw 430. The head of the second mounting screw 430 abuts against the second gasket 450, the second gasket 450 abuts against the second fixing base 440, and the second fixing base 440 abuts against one end in the length direction of the second mounting hole 233. By providing the second fixing base 440, when rotating and adjusting the second locking portion 410, the contact between the second locking portion 410 and the second mounting screw 430 and the rear template 230 can be reduced, and the wear of the rear template 230 can be reduced.

[0058] Referring to Figure 9 and Figure 10 As shown, in some embodiments of the present invention, an internal hexagonal hole is provided at one end of the locking block away from the mounting shaft, and the internal hexagonal hole is used for inserting a hexagonal wrench; wherein, a first internal hexagonal hole 314 is provided on the first locking block 313, and a second internal hexagonal hole 414 is provided on the second locking block 413. Through the above structural arrangement, the first locking portion 310 or the second locking portion 410 can be driven to rotate by inserting a hexagonal wrench into the first internal hexagonal hole 314 or the second internal hexagonal hole 414, improving the convenience of operation.

[0059] Referring to Figure 9 and Figure 10As shown, in some embodiments of the present utility model, an indicating line is provided on the locking block, and a blocking mark and an avoidance mark are provided on the outer side of one end of the mounting hole. When the locking block rotates to make the indicating line point to the blocking mark, the locking block can block the rear end of the front mold core assembly 120 or block the front end of the rear mold core assembly 220. When the locking block rotates to make the indicating line point to the avoidance mark, the locking block can avoid the rear end of the front mold core assembly 120 or avoid the front end of the rear mold core assembly 220. By setting the indicating line, the blocking mark and the avoidance mark, the state of the locking block can be determined intuitively and clearly, saving operation time and improving efficiency. Among them, a first indicating line 315 is provided on the first locking block 313, a first blocking mark 134 and a first avoidance mark 135 are provided on the outer side of one end of the first mounting hole 133, a second indicating line 415 is provided on the second locking block 413, and a second blocking mark 234 and a second avoidance mark 235 are provided on the outer side of one end of the second mounting hole 233. Among them, the first blocking mark 134 and the second blocking mark 234 can be represented by "ON", and the first avoidance mark 135 and the second avoidance mark 235 can be represented by "OFF".

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0061] The embodiments of the present utility model have been described in detail above in conjunction with the drawings. However, the present utility model is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those of ordinary skill in the art to which it pertains.

Claims

1. A precision quick-change mold, characterized in that: include: A front mold, the front mold comprising a front mold frame and a front mold core assembly, a front mold plate is provided at the rear end of the front mold frame, and a first groove penetrating the front mold plate is provided at the rear end of the front mold frame, and the front mold core assembly is embedded in the first groove; A rear mold, the rear mold comprising a rear mold frame and a rear mold core assembly, a rear mold plate is provided at the front end of the rear mold frame, and a second groove penetrating the rear mold plate is provided at the front end of the rear mold frame, and the rear mold core assembly is embedded in the second groove; Wherein, the front template is provided with a locking mechanism, which is used to lock the front mold core assembly in the first groove, and / or the rear template is provided with a locking mechanism, which is used to lock the rear mold core assembly in the second groove; the front template is provided with a first process positioning hole, and the rear template is provided with a second process positioning hole, and along the mold closing direction, the second process positioning hole is aligned with the first process positioning hole.

2. The precision quick-change mold according to claim 1, characterized in that: The first process positioning hole includes a plurality of first screw holes, and the second process positioning hole includes a plurality of second screw holes. Along the mold closing direction, the first screw holes are aligned with the second screw holes.

3. The precision quick-change mold according to claim 2, characterized in that: The first process positioning hole further includes a plurality of first pin holes, and the second process positioning hole further includes a plurality of second pin holes. Along the mold closing direction, the first pin holes are aligned with the second pin holes.

4. The precision quick-change mold according to claim 1, characterized in that: The front mold core assembly includes a front mold core, the front mold core is provided with a first mounting groove and a third process positioning hole, the first mounting groove is used to install the front mold core, the rear mold core assembly includes a rear mold core, the rear mold core is provided with a second mounting groove and a fourth process positioning hole, the second mounting groove is used to install the rear mold core, wherein along the mold closing direction, the third process positioning hole is aligned with the fourth process positioning hole.

5. The precision quick-change mold according to claim 4, characterized in that: The third process positioning hole includes a plurality of third screw holes and a plurality of third pin holes, and the fourth process positioning hole includes a plurality of fourth screw holes and a plurality of fourth pin holes. Along the mold closing direction, the third screw hole is aligned with the fourth screw hole, and the third pin hole is aligned with the fourth pin hole.

6. The precision quick-change mold according to claim 1, characterized in that: The locking mechanism includes a locking part and a positioning member. The locking part is rotatably arranged on the front template or the rear template. During the rotation of the locking part, the rear end of the front mold core assembly can be blocked and avoided, or the front end of the rear mold core assembly can be blocked and avoided. The positioning member is used to fix the locking part when the locking part blocks the front mold core assembly or the rear mold core assembly.

7. The precision quick-change mold according to claim 6, characterized in that: The positioning member comprises an elastic ball plunger, wherein the elastic ball plunger is provided with a ball head which can elastically move perpendicular to the rotation direction of the locking portion, and the locking portion is provided with a recessed position for the ball head to be embedded.

8. The precision quick-change mold according to claim 6, characterized in that: The front template or the rear template is provided with a through mounting hole, the locking mechanism also includes a mounting screw, the mounting screw portion is partially passed through the mounting hole, the locking portion includes a mounting shaft and a locking block provided at one end of the mounting shaft, the mounting shaft is inserted into the mounting hole and is threadedly connected to the mounting screw, the locking block and the head of the mounting screw are respectively abutted against the two ends of the mounting hole in the length direction.

9. The precision quick-change mold according to claim 8, characterized in that: An inner hexagonal hole is arranged at one end of the locking block away from the mounting shaft, and the inner hexagonal hole is used for inserting a hexagonal wrench.

10. The precision quick-change mold according to claim 8, characterized in that: An indicator line is provided on the locking block, and a blocking mark and an avoidance mark are provided on the outer side of one end of the mounting hole. When the locking block is rotated so that the indicator line points to the blocking mark, the locking block can block the rear end of the front mold core assembly or the front end of the rear mold core assembly. When the locking block is rotated so that the indicator line points to the avoidance mark, the locking block can avoid the rear end of the front mold core assembly or the front end of the rear mold core assembly.

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