Multi-section mold

Abstract

The multi-section mold comprises a guide assembly, an upper fixing plate, a core pulling plate, a front mold plate and a rear mold plate, the upper fixing plate, the core pulling plate, the front mold plate and the rear mold plate are sequentially arranged in the first direction, and a first front mold clamping groove and a second front mold clamping groove are formed in the side, facing a rear mold stroke mold locking piece, of a front mold stroke mold locking piece; a first rear mold clamping groove and a second rear mold clamping groove are formed in the side, facing the front mold stroke mold locking piece, of the rear mold stroke mold locking piece. The first movable pin detachably abuts against the interior of the first front mold clamping groove, and the second movable pin detachably abuts against the interior of the second front mold clamping groove; in the process that the rear mold stroke mold locking piece moves in the first direction, when the first rear mold clamping groove right faces the first front mold clamping groove, the first movable pin moves from the first rear mold clamping groove to the first front mold clamping groove, and when the second rear mold clamping groove right faces the second front mold clamping groove, the second movable pin moves from the second rear mold clamping groove to the second front mold clamping groove. The multi-section type mold is simple in structure and stable in operation, and the mold opening sequence can be conveniently controlled.

Description

Technical Field

[0001] The invention relates to the technical field of injection mold structure, in particular to a multi-section mold. Background Art

[0002] In the design of injection molds, a three-plate or multi-plate mold structure is designed according to the product structure requirements, and the template needs to be precisely opened and closed in multiple stages. The existing technology uses springs, openers, and small pull rods to control the order of opening and closing the templates. The combination of multiple components makes the mold control structure complicated. In the actual mass production of molds, springs and openers will fail and wear due to fatigue due to long-term use, and the accuracy of the mold opening sequence will decrease or even fail, causing chain-type failures in the mold. The mold needs to be frequently inspected, maintained, and maintained, which will increase production costs and affect production efficiency. Summary of the invention

[0003] Based on this, the present application provides a multi-stage mold with a simple structure and convenient control of the mold opening sequence.

[0004] A multi-stage mold, comprising a guide assembly and an upper fixed plate, a core pulling plate, a front mold plate and a rear mold plate arranged in sequence along a first direction, the guide assembly comprising a front mold stroke locking mold piece, a rear mold stroke locking mold piece, a first locking seat and a second locking seat, the first locking seat being fixed to the core pulling plate, and the second locking seat being fixed to the front mold plate; the front mold stroke locking mold piece is fixed to the upper fixed plate and penetrated through the first locking seat and the second locking seat, the front mold stroke locking mold piece and the rear mold stroke locking mold piece are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; the rear mold stroke locking mold piece is fixed to the rear mold plate and penetrated through the first locking seat and the second locking seat; the front mold stroke locking mold piece is provided with a first front mold slot and a second front mold slot on one side facing the rear mold stroke locking mold piece A front mold slot, and a first rear mold slot and a second rear mold slot are provided on a side of the rear mold stroke locking mold component facing the front mold stroke locking mold component; a first movable pin that can slide along the second direction is provided in the first locking seat, and the first movable pin can be detachably pressed against the first front mold slot, and a second movable pin that can slide along the second direction is provided in the second locking seat, and the second movable pin can be detachably pressed against the second front mold slot; during the movement of the rear mold stroke locking mold component along the first direction, when the first rear mold slot is opposite to the first front mold slot, the first movable pin moves from the first rear mold slot to the first front mold slot, and when the second rear mold slot is opposite to the second front mold slot, the second movable pin moves from the second rear mold slot to the second front mold slot.

[0005] In the above multi-stage mold, the first movable pin can be disengaged from the first front mold slot, and the second movable pin can be disengaged from the second front mold slot. During the movement of the rear mold stroke locking mold piece along the first direction, when the first rear mold slot is directly opposite to the first front mold slot, the first movable pin moves from the first rear mold slot to the first front mold slot, and when the second rear mold slot is directly opposite to the second front mold slot, the second movable pin moves from the second rear mold slot to the second front mold slot. The opening and closing sequence of the templates of the multi-stage mold is realized by utilizing the matching state of the front mold stroke locking mold piece, the rear mold stroke locking mold piece, the first front mold slot, the first rear mold slot, and the first movable pin and the second movable pin during the mold opening and closing process. When the first movable pin and the second movable pin slide and enter the slots of the front mold stroke locking mold piece and the rear mold stroke locking mold piece at the same time, the corresponding template enters a locked state and cannot be opened and closed; when the movable pin slides out of the slots of any front mold stroke locking mold piece and the rear mold stroke locking mold piece, the corresponding template enters an unlocked state and can be opened and closed.

[0006] In one embodiment, the first rear mold slot and the second rear mold slot have a semi-circular arc surface structure; the first front mold slot and the second front mold slot have a 1 / 4 circular arc surface structure.

[0007] In one embodiment, the side of the front mold stroke locking mold component close to the rear mold stroke locking mold component includes a first abutment surface, the first front mold groove, a second abutment surface and the second front mold groove in sequence along the first direction; before the core pulling plate and the front mold plate are separated along the first direction, the first movable pin is clamped between the first abutment surface and the first rear mold groove; before the rear mold plate and the front mold plate are separated along the first direction, the second movable pin is clamped between the second abutment surface and the second rear mold groove.

[0008] In one of the embodiments, a first sliding groove extending along the second direction is formed in the first locking seat, and the first movable pin is slidably disposed in the first sliding groove. When the first sliding groove moves along the first direction with the core pulling plate to face the first front mold slot, the first movable pin is acted upon by the first rear mold slot to move along the first sliding groove to enter the first front mold slot and disengage from the first rear mold slot.

[0009] In one of the embodiments, a first rear guide groove is opened in the first locking seat along the first direction, the rear mold stroke locking mold component is penetrated in the first rear guide groove, the first rear guide groove is connected with the first slide groove, and a first elastic limiter is provided in the first rear guide groove; when the first slide groove moves along the first direction with the core pulling plate to face the first front mold slot, the first elastic limiter is separated from the rear mold stroke locking mold component to restrict the first movable pin in the first front mold slot; before the first slide groove moves along the first direction with the core pulling plate to face the first front mold slot, the rear mold stroke locking mold component abuts against the first elastic limiter to separate the first elastic limiter from the first movable pin.

[0010] In one embodiment, the first elastic limiter comprises a first limiter block and a first spring, one end of the first spring is connected to the first limiter block, and the other end is connected to the groove wall of the first rear guide groove, a first guide slope is provided on a side of the first limiter block close to the rear mold stroke locking mold member, and a first matching slope is provided on an end of the rear mold stroke locking mold member close to the first rear mold clamping groove;

[0011] After the first slide groove moves along the first direction with the core pulling plate to face the first front mold slot, the first limit block is acted upon by the first spring to spring up along the first matching inclined surface to limit the first movable pin in the first front mold slot;

[0012] Before the first rear mold slot moves in the opposite direction of the first direction to face the first front mold slot, the first limit block is lifted up by the first matching slope as the first guide slope is separated from the first movable pin, so that the first movable pin can escape from the first front mold slot along the first sliding groove and enter the first rear mold slot.

[0013] In one embodiment, a first locking groove is formed on one side of the first limit block close to the front mold stroke locking mold, and the shape of the first locking groove is adapted to the shape of the end edge of the first movable pin. The first locking groove is used to clamp the end edge of the first movable pin to limit the first movable pin to the first front mold locking groove.

[0014] In one of the embodiments, a second sliding groove extending along the second direction is formed in the second locking seat, and the second movable pin is slidably disposed in the second sliding groove. When the second sliding groove moves along the first direction with the front mold plate to face the second front mold slot, the second movable pin is acted upon by the second rear mold slot to move along the second sliding groove to enter the second front mold slot and disengage from the second rear mold slot.

[0015] In one of the embodiments, a second rear guide groove is opened in the second locking seat along the first direction, the rear mold stroke locking mold member is penetrated in the second rear guide groove, the second rear guide groove is connected with the second slide groove, and a second elastic limit member is provided in the second rear guide groove; when the second slide groove moves along with the front template along the first direction to face the second front mold slot, the second elastic limit member is separated from the rear mold stroke locking mold member to restrict the second movable pin in the second front mold slot; before the second slide groove moves along with the front template along the first direction to face the second front mold slot, the rear mold stroke locking mold member abuts against the second elastic limit member to separate the second elastic limit member from the second movable pin.

[0016] In one embodiment, the second elastic limiting member includes a second limiting block and a second spring, one end of the second spring is connected to the second limiting block, and the other end is connected to the groove wall of the second rear guide groove, the second limiting block forms a second clamping groove on the side close to the front mold stroke locking mold, and the shape of the second clamping groove is adapted to the shape of the end edge of the second movable pin; the second limiting block is provided with a second guiding inclined surface on the side close to the rear mold stroke locking mold, and the rear mold stroke locking mold is provided with a second matching inclined surface between the first rear mold clamping groove and the second rear mold clamping groove;

[0017] After the second slide groove moves along the first direction with the front mold plate to face the second front mold slot, the second limit block is acted upon by the second spring to spring up along the second matching inclined surface to limit the second movable pin in the second front mold slot through the second locking slot;

[0018] Before the second rear mold slot moves in the opposite direction of the first direction to face the second front mold slot, the second limit block is lifted up by the second matching slope as the second guide slope is separated from the second movable pin, so that the second movable pin can disengage from the second front mold slot along the second slide groove and enter the second rear mold slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 A schematic structural diagram of a multi-section mold according to an embodiment;

[0021] Figure 2 A schematic diagram of a partial structure of a multi-section mold according to an embodiment;

[0022] Figure 3 A schematic structural diagram of a multi-section mold according to an embodiment;

[0023] Figure 4 A schematic diagram of a partial structure of a multi-section mold according to an embodiment;

[0024] Figure 5 A schematic structural diagram of a multi-section mold according to an embodiment;

[0025] Figure 6 A schematic diagram of a partial structure of a multi-section mold according to an embodiment;

[0026] Figure 7 A schematic structural diagram of a multi-section mold according to an embodiment;

[0027] Figure 8 A schematic diagram of a partial structure of a multi-section mold according to an embodiment;

[0028] Fig. 9 A schematic structural diagram of a multi-section mold according to an embodiment;

[0029] Fig.10 A schematic diagram of a partial structure of a multi-section mold according to an embodiment;

[0030] Fig.11 A schematic structural diagram of a multi-section mold according to an embodiment;

[0031] Fig.12 A schematic diagram of a partial structure of a multi-section mold according to an embodiment;

[0032] Fig.13 A schematic diagram of a partial structure of a multi-section mold according to an embodiment.

[0033] Figure numerals: multi-stage mold 10; guide assembly 20; front mold stroke locking mold member 21; first front mold slot 211; second front mold slot 212; rear mold stroke locking mold member 22; first rear mold slot 221; second rear mold slot 222; first locking seat 23; first movable pin 231; first slide slot 233; first rear guide slot 234; first elastic stopper 235; first stopper block 2351; first spring 2352; second locking seat 24; second movable pin 241; second slide slot 242; second elastic stopper 244; second stopper block 2441; second spring 2442; upper fixed plate 30; core pulling plate 40; front template 50; rear template 60; first direction P1; second direction P2 DETAILED DESCRIPTION

[0034] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0035] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0038] In the design of injection molds, a three-plate or multi-plate mold structure is designed according to the product structure requirements, and the template needs to be precisely opened and closed in multiple stages. The existing technology uses springs, openers, and small pull rods to control the order of opening and closing the templates. The combination of multiple components makes the mold control structure complicated. In the actual mass production of molds, springs and openers will fail and wear due to fatigue due to long-term use, and the accuracy of the mold opening sequence will decrease or even fail, causing chain-type failures in the mold. The mold needs to be frequently inspected, maintained, and maintained, which will increase production costs and affect production efficiency.

[0039] See also Figures 1 to 13In order to solve the above problems, the embodiment of the present application provides a multi-stage mold 10, including a guide assembly 20 and an upper fixed plate 30, a core pulling plate 40, a front mold plate 50 and a rear mold plate 60 arranged in sequence along a first direction P1, the guide assembly 20 includes a front mold stroke locking mold part 21, a rear mold stroke locking mold part 22, a first locking seat 23 and a second locking seat 24, the first locking seat 23 is fixed to the core pulling plate 40, and the second locking seat 24 is fixed to the front mold plate 50; the front mold stroke locking mold part 21 is fixed to the upper fixed plate 30 and penetrates the first locking seat 23 and the second locking seat 24, the front mold stroke locking mold part 21 and the rear mold stroke locking mold part 22 are arranged at intervals along the second direction P2, and the second direction P2 is perpendicular to the first direction P1; the rear mold stroke locking mold part 22 is fixed to the rear mold plate 60 and penetrates the first locking seat 23 and the second locking seat 24; the front mold stroke locking mold part 21 is provided with a first front mold stroke locking mold part on one side facing the rear mold stroke locking mold part 22 The first front mold slot 211 and the second front mold slot 212 are provided on the side of the rear mold stroke locking mold 22 facing the front mold stroke locking mold 21. The first movable pin 231 that can slide along the second direction P2 is provided in the first locking seat 23. The first movable pin 231 can be detachably pressed against the first front mold slot 211. The second locking seat 24 is provided with a second movable pin 241 that can slide along the second direction P2. The pin 241 can be detachably abutted against the second front mold slot 212; when the rear mold stroke locking mold 22 moves along the first direction P1, when the first rear mold slot 221 is opposite to the first front mold slot 211, the first movable pin 231 moves from the first rear mold slot 221 to the first front mold slot 211, and when the second rear mold slot 222 is opposite to the second front mold slot 212, the second movable pin 241 moves from the second rear mold slot 222 to the second front mold slot 212.

[0040] See also Figure 1 and Figure 2 , Figure 1 and Figure 2The schematic diagram of the mold closing state of the multi-stage mold 10 provided in the present application, the guide assembly 20 is used to provide guidance for the mold opening process, the guide assembly 20 includes a front mold stroke locking mold 21, a rear mold stroke locking mold 22, a first locking seat 23 and a second locking seat 24, the front mold stroke locking mold 21 and the rear mold stroke locking mold 22 are arranged in parallel, in the mold closing state, the first locking seat 23 and the second locking seat 24 are connected to the front mold stroke locking mold 21 and the rear mold stroke locking mold 22, the first locking seat 23 and the second locking seat 24 are used for the adjustment function of the multi-stage mold 10 during the mold opening and closing process, and can achieve the function of locking and opening, the first front mold slot 211 and the second front mold slot 212 can be abutted with the first locking seat 23 and the second locking seat 24 to control the locking and releasing during the mold opening and closing process. The first movable pin 231 can be detachably abutted in the first front mold slot 211, and the second movable pin 241 can be detachably abutted in the second front mold slot 212. During the movement of the rear mold stroke locking mold 22 along the first direction P1, the first movable pin 231 can move. When the first rear mold slot 221 is opposite to the first front mold slot 211, the first movable pin 231 moves from the first rear mold slot 221 to the first front mold slot 211; when the second rear mold slot 222 is opposite to the second front mold slot 212, the second movable pin 241 moves from the second rear mold slot 222 to the second front mold slot 212.

[0041] See also Figures 1 to 13In some embodiments, a first slide groove 233 extending along the second direction P2 is provided in the first locking seat 23, and the first movable pin 231 is slidably disposed in the first slide groove 233. During the mold opening and closing process, the first movable pin 231 can slide in the first slide groove 233. In some embodiments, the first movable pin 231 is configured to be cylindrical, and the first slide groove 233 is matched with the size of the first movable pin 231. When the first slide groove 233 moves along the first direction P1 with the core pulling plate 40 to face the first front mold slot 211, the first movable pin 231 is acted upon by the first rear mold slot 221 and moves along the first slide groove 233 to enter the first front mold slot 211 and disengage from the first rear mold slot 221. In some embodiments, a first rear guide groove 234 is provided in the first locking seat 23 along the first direction P1, the rear mold stroke locking mold member 22 is penetrated in the first rear guide groove 234, the first rear guide groove 234 is connected with the first slide groove 233, and a first elastic stopper 235 is provided in the first rear guide groove 234. When the first slide groove 233 moves along the first direction P1 with the core pulling plate 40 to face the first front mold clamping groove 211, the first elastic stopper 235 separates from the rear mold stroke locking mold member 22 to restrict the first movable pin 231 in the first front mold clamping groove 211; before the first slide groove 233 moves along the first direction P1 with the core pulling plate 40 to face the first front mold clamping groove 211, the rear mold stroke locking mold member 22 abuts against the first elastic stopper 235 to separate the first elastic stopper 235 from the first movable pin 231. Specifically, the first elastic limiting member 235 includes a first limiting block 2351 and a first spring 2352, one end of the first spring 2352 is connected to the first limiting block 2351, and the other end is connected to the groove wall of the first rear guide groove 234. The first limiting block 2351 is provided with a first guiding inclined surface on one side close to the rear mold stroke locking mold 22, and the rear mold stroke locking mold 22 is provided with a first matching inclined surface on one end close to the first rear mold clamping groove 221. After the first slide groove 233 moves along the first direction P1 with the core pulling plate 40 to face the first front mold clamping groove 211, the first limiting block 2351 is acted upon by the first spring 2352 and bounces up along the first matching inclined surface to restrict the first movable pin 231 in the first front mold clamping groove 211. Before the first rear mold slot 221 moves in the opposite direction of the first direction P1 to face the first front mold slot 211, the first limit block 2351 is lifted up by the first matching slope as the first guide slope is separated from the first movable pin 231, so that the first movable pin 231 can detach from the first front mold slot 211 along the first slide groove 233 and enter the first rear mold slot 221.

[0042] Correspondingly, a second slide groove 242 extending along the second direction P2 is provided in the second locking seat 24, and the second movable pin 241 is slidably disposed in the second slide groove 242. In some embodiments, the first locking seat 23 and the second locking seat 24 have the same size, and the first slide groove 233 and the second slide groove 242 have the same size. When the second slide groove 242 moves along the first direction P1 with the front mold plate 50 to face the second front mold slot 212, the second movable pin 241 is acted upon by the second rear mold slot 222 and moves along the second slide groove 242 to enter the second front mold slot 212 and disengage from the second rear mold slot 222. A second rear guide groove is provided in the second locking seat 24 along the first direction P1, and the rear mold stroke locking mold member 22 is penetrated in the second rear guide groove, the second rear guide groove is connected to the second slide groove 242, and a second elastic stopper 244 is provided in the second rear guide groove. When the second slide slot 242 moves along the first direction P1 with the front template 50 to face the second front mold slot 212, the second elastic stopper 244 separates from the rear mold stroke locking mold 22 to limit the second movable pin 241 in the second front mold slot 212. Before the second slide slot 242 moves along the first direction P1 with the front template 50 to face the second front mold slot 212, the rear mold stroke locking mold 22 abuts against the second elastic stopper 244 to separate the second elastic stopper 244 from the second movable pin 241. In some embodiments, the second elastic stopper 244 includes a second stopper block 2441 and a second spring 2442, one end of the second spring 2442 is connected to the second stopper block 2441, and the other end is connected to the slot wall of the second rear guide slot. In some embodiments, the first elastic stopper 235 and the second elastic stopper 244 can be set to the same structure. A second positioning groove is formed on the side of the second limit block 2441 close to the front mold stroke locking mold 21, and the shape of the second positioning groove is adapted to the shape of the end edge of the second movable pin 241, so that the second positioning groove and the end edge of the second movable pin 241 can abut against each other. A second guiding inclined surface is provided on the side of the second limit block 2441 close to the rear mold stroke locking mold 22, and the rear mold stroke locking mold 22 is provided with a second matching inclined surface between the first rear mold slot 221 and the second rear mold slot 222. After the second slide 242 moves along the first direction P1 with the front mold plate 50 to face the second front mold slot 212, the second limit block 2441 is acted upon by the second spring 2442 and bounces up along the second matching inclined surface to restrict the second movable pin 241 in the second front mold slot 212 through the second positioning groove. Before the second rear mold slot 222 moves in the opposite direction of the first direction P1 to be directly opposite to the second front mold slot 212, the second limit block 2441 is lifted up by the second matching slope as the second guide slope is separated from the second movable pin 241, so that the second movable pin 241 can disengage from the second front mold slot 212 along the second slide groove 242 and enter the second rear mold slot 222.

[0043] See also Figure 3 and Figure 4, Figure 3 and Figure 4 The first schematic diagram of the first mold opening state of the multi-stage mold 10 provided in this application, the first rear mold slot 221 and the second rear mold slot 222 have a semicircular arc surface structure, the first rear mold slot 221 and the second rear mold slot 222 can abut against the first movable pin 231 and the second movable pin 241, and the first front mold slot 211 and the second front mold slot 212 have a 1 / 4 arc surface structure. When opening the mold, the upper fixed plate 30 opens the S1 distance, the first movable pin 231 falls into the first front mold slot 211 of the front mold stroke locking mold member 21, and the other plates are in a locked state; the mold continues to open the mold, and the first elastic limiter 235 slides to the left and falls into the first front mold slot 211 of the front mold stroke locking mold bar, completing the S1 mold opening distance.

[0044] See also Figure 5 and Figure 6 , Figure 5 and Figure 6 The second mold opening state schematic diagram of the multi-stage mold 10 provided in the present application, the upper fixed plate 30 and the core pulling plate 40 of the mold continue to open the mold, the second movable pin 241 slides to the left and falls into the first front mold slot 211 of the front mold stroke locking strip, completing the S2 mold opening distance, and the first limit block 2351 and the first spring 2352 release the compression and move upward to limit the sliding of the first movable pin 231. In some embodiments, the front mold stroke locking mold part 21 near the rear mold stroke locking mold part 22 includes a first top contact surface, a first front mold slot 211, a second top contact surface and a second front mold slot 212 connected in sequence along the first direction P1, before the core pulling plate 40 and the front mold plate 50 are separated along the first direction P1, the first movable pin 231 is clamped between the first top contact surface and the first rear mold slot 221, and before the rear mold plate 60 and the front mold plate 50 are separated along the first direction P1, the second movable pin 241 is clamped between the second top contact surface and the second rear mold slot 222. In some embodiments, the first movable pin 231 and the second movable pin 241 have the same size, and the first front mold slot 211 and the second front mold slot 212 have the same size.

[0045] See also Figure 7 and Figure 8 , Figure 7 and Figure 8 This is a schematic diagram of the fully opened state of the multi-stage mold 10 provided in this application. Figure 5 and Figure 6Based on the mold opening state, the template continues to move, and the second limit block 2441 and the second spring 2442 of the second elastic limit member 244 release the compression and move upward, limiting the sliding of the second movable pin 241 until all plates are molded, thereby completing the mold opening sequence. In some embodiments, the first limit block 2351 forms a first clamping groove on one side close to the front mold stroke locking mold member 21, and the shape of the first clamping groove is adapted to the shape of the end edge of the first movable pin 231. The first clamping groove is used to clamp the end edge of the first movable pin 231 to limit the first movable pin 231 in the first front mold clamping groove 211.

[0046] See also Fig. 9 and Fig.10 , Fig. 9 and Fig.10 This is a schematic diagram of the first mold closing state of the multi-stage mold 10 provided in the present application. When the mold is closed, the rear mold stroke locking component 22 squeezes the second limit block 2441 of the second elastic limit component 244 to reset, so that the second movable pin 241241 slides to the right, and the second movable pin 241241 falls into the second rear mold slot 222 of the rear mold stroke locking component 22, preventing the front mold stroke locking component 21 from supporting the second movable pin 241 when the mold is closed.

[0047] See also Fig.11 and Fig.12 , Fig.11 and Fig.12 This is a schematic diagram of a second mold closing state of the multi-stage mold 10 provided in this application. Fig. 9 and Fig.10 On the basis of the above, the mold continues to close the mold, and the rear mold stroke locking strip squeezes the first limit block 2351 of the first elastic limit member 235 to reset, so that the first movable pin 231 slides to the right, and the first movable pin 231 falls into the first rear mold slot 221 of the rear mold stroke locking member 22, to prevent the front mold stroke locking member 21 from holding up the first movable pin 231 when closing the mold, until all the plates are in place, thereby completing the mold closing sequence. The multi-stage mold 10 utilizes the coordination state of the front mold stroke locking member 21, the rear mold stroke locking member 22, the first front mold slot 211, the first rear mold slot 221, the first movable pin 231 and the second movable pin 241 in the process of opening and closing the mold, so as to realize the opening and closing sequence of the templates of the multi-stage mold 10, so that the multiple templates enter the locked or unlocked state, thereby realizing the precise and stable control of the opening and closing sequence between the multiple templates.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A multi-stage mold, characterized in that: It comprises a guide assembly and an upper fixed plate, a core pulling plate, a front template and a rear template arranged in sequence along a first direction, the guide assembly comprises a front mold stroke locking mold, a rear mold stroke locking mold, a first locking seat and a second locking seat, the first locking seat is fixed to the core pulling plate, and the second locking seat is fixed to the front template; the front mold stroke locking mold is fixed to the upper fixed plate and penetrated through the first locking seat and the second locking seat, the front mold stroke locking mold and the rear mold stroke locking mold are arranged at intervals along the second direction, and the second direction is perpendicular to the first direction; the rear mold stroke locking mold is fixed to the rear template and penetrated through the first locking seat and the second locking seat; the front mold stroke locking mold is provided with a first front mold card slot and a second front mold card slot on one side of the front mold stroke locking mold facing the rear mold stroke locking mold. , the rear mold stroke locking mold component is provided with a first rear mold slot and a second rear mold slot on a side facing the front mold stroke locking mold component; the first locking seat is provided with a first movable pin that can slide along the second direction, the first movable pin can be detachably pressed against the first front mold slot, and the second locking seat is provided with a second movable pin that can slide along the second direction, and the second movable pin can be detachably pressed against the second front mold slot; in the process of the rear mold stroke locking mold component moving along the first direction, when the first rear mold slot is facing the first front mold slot, the first movable pin moves from the first rear mold slot to the first front mold slot, and when the second rear mold slot is facing the second front mold slot, the second movable pin moves from the second rear mold slot to the second front mold slot.

2. The multi-stage mold according to claim 1, characterized in that: The first rear mold slot and the second rear mold slot have a semi-circular arc surface structure; the first front mold slot and the second front mold slot have a 1 / 4 circular arc surface structure.

3. The multi-stage mold according to claim 2, characterized in that: The side of the front mold stroke locking mold component close to the rear mold stroke locking mold component includes a first abutting surface, the first front mold slot, a second abutting surface and the second front mold slot in sequence along the first direction; before the core pulling plate and the front mold plate are separated along the first direction, the first movable pin is clamped between the first abutting surface and the first rear mold slot; before the rear mold plate and the front mold plate are separated along the first direction, the second movable pin is clamped between the second abutting surface and the second rear mold slot.

4. The multi-stage mold according to claim 3, characterized in that: A first sliding groove extending along the second direction is provided in the first locking seat, and the first movable pin is slidably disposed in the first sliding groove. When the first sliding groove moves along the first direction with the core pulling plate to face the first front mold slot, the first movable pin is acted upon by the first rear mold slot to move along the first sliding groove to enter the first front mold slot and disengage from the first rear mold slot.

5. The multi-stage mold according to claim 4, characterized in that: A first rear guide groove is provided in the first locking seat along the first direction, the rear mold stroke locking mold member is passed through the first rear guide groove, the first rear guide groove is communicated with the first slide groove, and a first elastic limiting member is provided in the first rear guide groove; when the first slide groove moves along the first direction with the core pulling plate to face the first front mold clamping groove, the first elastic limiting member is separated from the rear mold stroke locking mold member to restrict the first movable pin in the first front mold clamping groove; The first slide groove moves along the first direction with the core-pulling plate until it is directly opposite to the first front mold slot, and the rear mold stroke locking component abuts against the first elastic limiting component to separate the first elastic limiting component from the first movable pin.

6. The multi-stage mold according to claim 5, characterized in that: The first elastic limiting member comprises a first limiting block and a first spring, one end of the first spring is connected to the first limiting block, and the other end is connected to the groove wall of the first rear guide groove, a first guiding inclined surface is provided on a side of the first limiting block close to the rear mold stroke locking mold member, and a first matching inclined surface is provided on an end of the rear mold stroke locking mold member close to the first rear mold clamping groove; After the first slide groove moves along the first direction with the core pulling plate to face the first front mold slot, the first limit block is acted upon by the first spring to spring up along the first matching inclined surface to limit the first movable pin in the first front mold slot; Before the first rear mold slot moves in the opposite direction of the first direction to face the first front mold slot, the first limit block is lifted up by the first matching slope as the first guide slope is separated from the first movable pin, so that the first movable pin can escape from the first front mold slot along the first sliding groove and enter the first rear mold slot.

7. The multi-stage mold according to claim 6, characterized in that: A first locking groove is formed on one side of the first limit block close to the front mold stroke locking mold component, and the shape of the first locking groove is adapted to the shape of the end edge of the first movable pin. The first locking groove is used to clamp the end edge of the first movable pin to limit the first movable pin to the first front mold locking groove.

8. The multi-section mold according to claim 3, characterized in that: A second sliding groove extending along the second direction is provided in the second locking seat, and the second movable pin is slidably disposed in the second sliding groove. When the second sliding groove moves along the first direction with the front mold plate to face the second front mold slot, the second movable pin is acted upon by the second rear mold slot to move along the second sliding groove to enter the second front mold slot and disengage from the second rear mold slot.

9. The multi-section mold according to claim 8, characterized in that: A second rear guide groove is provided in the second locking seat along the first direction, the rear mold stroke locking mold member is passed through the second rear guide groove, the second rear guide groove is communicated with the second slide groove, and a second elastic limiting member is provided in the second rear guide groove; when the second slide groove moves along the first direction with the front mold plate to face the second front mold clamping groove, the second elastic limiting member is separated from the rear mold stroke locking mold member to restrict the second movable pin in the second front mold clamping groove; Before the second slide groove moves along the first direction with the front mold plate to face the second front mold clamping groove, the rear mold stroke locking mold member abuts against the second elastic limiting member to separate the second elastic limiting member from the second movable pin.

10. The multi-section mold according to claim 9, characterized in that: The second elastic limiting member comprises a second limiting block and a second spring, one end of the second spring is connected to the second limiting block, and the other end is connected to the groove wall of the second rear guide groove, the second limiting block is formed with a second clamping groove on a side close to the front mold stroke locking mold member, and the shape of the second clamping groove is adapted to the shape of the end edge of the second movable pin; the second limiting block is provided with a second guiding inclined surface on a side close to the rear mold stroke locking mold member, and the rear mold stroke locking mold member is provided with a second matching inclined surface between the first rear mold clamping groove and the second rear mold clamping groove; After the second slide groove moves along the first direction with the front mold plate to face the second front mold slot, the second limit block is acted upon by the second spring to spring up along the second matching inclined surface to limit the second movable pin in the second front mold slot through the second locking slot; Before the second rear mold slot moves in the opposite direction of the first direction to face the second front mold slot, the second limit block is lifted up by the second matching slope as the second guide slope is separated from the second movable pin, so that the second movable pin can disengage from the second front mold slot along the second slide groove and enter the second rear mold slot.

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