Quick-reset thermoplastic nylon carbon plate double-layer injection mold and use method thereof

Abstract

The invention discloses a quick-reset thermoplastic nylon carbon plate double-layer injection mold and a using method thereof, and relates to the technical field of injection molding part machining, the device comprises an upper mold and a lower mold, the lower mold is provided with an ejection frame, a lower fixing plate is provided with an ejection air cylinder, the ejection frame is connected with the lower fixing plate through a reset unit, and the lower fixing plate is provided with an ejection air cylinder. The reset unit comprises a plurality of reset springs, the reset springs are connected with the first connecting plate, the rotating block is provided with a detection unit used for detecting the springback capacity of the reset springs, and the lower fixing plate is provided with a rotating unit used for driving the rotating block to rotate in the circumferential direction of the first connecting plate; according to the device, the rotating unit drives the rotating block to rotate, the detection unit is driven to rotate in the circumferential direction of the first connecting plate, the rebounding capacity of all the reset springs is detected in sequence, the reset springs with poor rebounding capacity are replaced, a user can conveniently detect the reset springs, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mold processing, and particularly relates to a rapid-reset thermoplastic nylon carbon plate double-layer injection mold and a use method thereof. BACKGROUND

[0002] Mold, various molds and tools used in industrial production to obtain the required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods, and the double-layer injection mold can be used to injection mold a product by using two different plastics. In the processing of a nylon carbon plate, a double-layer injection mold is used for processing.

[0003] Through retrieval, a rapid-reset double-layer injection mold (CN217648880U) is disclosed. The lifting reset device is provided. Under the action of the driving motor, the rotating rod, the first bevel gear, the second bevel gear, the threaded rod and the moving groove, the moving block can drive the upper mold body to move up and down, so that the upper mold body can be quickly reset after injection molding, and the next work of the double-layer injection mold is avoided.

[0004] However, the above-mentioned application has the following deficiencies. The injection-molded finished product needs to be ejected by the ejection mechanism when demolding. The ejection mechanism needs to be reset under the action of the reset spring after the finished product is ejected. The reset spring will produce elastic attenuation and rebound ability will weaken after a period of use. The elastic attenuation of each reset spring is different due to different production batches, which causes the ejection mechanism to deviate from the center when the reset spring with different rebound abilities is reset. Therefore, the rebound ability of the reset spring needs to be detected to ensure the normal work of the ejection mechanism. The present mold does not have the function of detecting the rebound ability of the reset spring. The reset spring is generally removed for detection. This detection method consumes more time and labor.

[0005] Therefore, the present application provides a rapid-reset thermoplastic nylon carbon plate double-layer injection mold and a use method thereof to solve the above-mentioned problems. SUMMARY

[0006] The present application aims to provide a rapid-reset thermoplastic nylon carbon plate double-layer injection mold and a use method thereof to solve the above-mentioned problems in the background art.

[0007] The technical scheme of the present application is: a kind of thermoplastic type nylon carbon plate double-layer injection mold of quick reset, including upper die and lower die, the upper die and lower die are connected by guide column, the end of the guide column is connected with lower fixed plate, pouring gate is provided on the upper die, the lower die is provided with ejection frame, the lower fixed plate is provided with ejector cylinder, the ejector cylinder is used to provide the power of the ejection frame to eject finished product, the ejection frame is connected with the lower fixed plate by reset unit, the reset unit includes multiple reset springs, multiple the reset spring is evenly arranged in the circumferential direction of the ejection frame, the reset spring is connected with first connecting plate, the first connecting plate is connected with rotating block, the rotating block is provided with detection unit for the rebound ability detection of the reset spring, the lower fixed plate is provided with rotating unit for driving the rotating block to rotate in the circumferential direction of the first connecting plate.

[0008] Preferably, the upper die is provided with a forming cavity, the lower die is provided with a forming block, the ejection frame is arranged in the forming block, the upper die is fixedly connected with an upper fixed plate, and the lower die is fixedly connected with a barrier plate through a plurality of fourth connecting rods.

[0009] Preferably, the shape of the first connecting plate corresponds to the shape of the ejection frame, the output end of the first connecting plate is connected with the ejector cylinder, the first connecting plate is fixedly connected with an ejecting rod, the upper end of the ejecting rod is narrowed and connected with the ejection frame, the reset spring is sleeved on the outer wall of the ejecting rod, and the ejecting rod penetrates through the barrier plate.

[0010] Preferably, the lower end of the rotating block is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with a rotating plate.

[0011] Preferably, the detection unit includes a first connecting rod fixedly connected to the rotating plate, an infrared length detector is fixedly connected to the side surface of the first connecting rod, and an adjusting unit for length adjustment of the reset spring is arranged on the first connecting rod.

[0012] Preferably, the adjusting unit includes a through groove opened in the first connecting rod, an arc-shaped adjusting rod is clamped in the through groove, a first inserting rod is fixedly connected in the through groove, an insertion slot matched with the first inserting rod is arranged on the arc-shaped adjusting rod, a first inclined surface is arranged on the side of the arc-shaped adjusting rod facing downward, a deep groove is opened on the side of the insertion slot away from the first inclined surface, a first clamping groove is opened on the inner wall of the through groove, and a push block is clamped in the first clamping groove. The push block is connected with the inner wall of the deep groove through a first spring for providing elastic force.

[0013] Preferably, the rotating unit comprises a connecting ring connected with the lower fixed plate through an elastic connecting rod, a second motor fixedly connected to the lower end of the connecting ring, an output end of the second motor fixedly connected with a rotating gear, an inner side of the connecting ring provided with a rotating gear ring, the rotating gear ring engaged with the rotating gear, an annular clamping protrusion fixedly connected to the rotating gear ring, an annular clamping groove provided on the connecting ring matched with the annular clamping protrusion, a connecting inner rod fixedly connected to the inner side of the rotating gear ring, a connecting outer rod fixedly connected to the side of the rotating block, the connecting outer rod sleeved on the outer side of the connecting inner rod, a second clamping groove provided in the connecting outer rod, a first clamping plate fixedly connected to the end of the connecting inner rod, the first clamping plate connected with the inner wall of the second clamping groove through a second spring for providing elastic force, the second spring sleeved on the outer side of the connecting inner rod, a third clamping groove annularly provided on the first connecting plate, and a clamping plate piece clamped with the third clamping groove fixedly connected to the side of the rotating block.

[0014] Preferably, the rotating plate is provided with a material taking unit for taking out the reset spring, the material taking unit comprising a second connecting rod fixedly connected to the rotating plate, a plurality of arrayed second insertion rods inserted on the second connecting rod, a anti-dropping plate fixedly connected to one end of the second insertion rod, a moving rod fixedly connected to the other end of the second insertion rod, the moving rod connected with the second connecting rod through a third spring for providing elastic force, the third spring sleeved on the outer side of the second insertion rod, the side of the moving rod provided with symmetrically arranged back-facing material taking plates, the lower end of the material taking plate fixedly connected with the second connecting rod, the material taking plate provided with a material taking curved surface, a third connecting rod fixedly connected to the side of the second connecting rod, a third insertion rod inserted on the third connecting rod, one end of the third insertion rod fixedly connected with the upper end of the material taking plate, a second connecting plate fixedly connected to the other end of the third insertion rod, the second connecting plate connected with the third connecting rod through a fourth spring for providing elastic force, the fourth spring sleeved on the outer side of the third insertion rod.

[0015] Preferably, the reset spring is connected with a fixed ring on the upper and lower sides, the reset spring sleeved on the outer side of the guide rod, the lower end of the fixed ring fixedly connected with the guide rod, the upper end of the fixed ring sleeved on the outer side of the guide rod, an insertion protrusion fixedly connected to the guide rod, and a fifth clamping groove provided in the guide rod matched with the guide rod.

[0016] A use method of a rapid reset thermoplastic nylon carbon plate double-layer injection mold, comprising the following steps: Step one: the injection liquid is input through the pouring port, the mold forming operation is carried out under the cooperation of the forming cavity and the forming block, the ejection cylinder drives the ejection frame to eject the finished product, and the compression reset spring is reset; Step two: the resilience of the reset spring is detected by the detection unit, and the reset spring with unqualified resilience is marked; Step three: the reset spring with unqualified resilience is taken off by the taking unit for replacement.

[0017] The present application provides a thermoplastic nylon carbon plate double-layer injection mold for quick reset and its use method, which has the following improvements and advantages compared with the prior art: After the upper mold and the lower mold are closed, the injection liquid is input through the pouring port, the mold forming operation is carried out under the cooperation of the forming cavity and the forming block, the ejection cylinder drives the ejection frame to eject the finished product, and the compression reset spring is reset, when the reset spring needs to be detected, the rotating unit drives the rotating block to rotate, and then drives the detection unit to rotate in the circumferential direction of the first connecting plate, the resilience of each reset spring is detected in turn, and the reset spring with poor resilience is replaced, which can facilitate the detection of the reset spring by the user and improve the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The overall structure of the present application Figure 1 Figure 2 The overall structure of the present application Figure 2 Figure 3 The partial structure of the present application Figure 1 Figure 4 The partial structure of the present application Figure 3 The enlarged structure diagram of A in the present application Figure 5 The enlarged structure diagram of B in the present application Figure 3 The enlarged structure diagram of B in the present application Figure 6 The structure diagram of the connection between the reset spring and the fixing ring in the present application Figure 7 The partial structure of the present application Figure 2 ​​​​Figure 8 As Figure 7 An enlarged structural schematic view at C in the figure; Figure 9 As Figure 7 An enlarged structural schematic view at D in the figure; Figure 10 As a cross-sectional structural schematic view of the ring-shaped clamping protrusion and the ring-shaped clamping groove in the application; Figure 11 As a cross-sectional structural schematic view of the connection between the inner connecting rod and the outer connecting rod in the application; Figure 12 As a partial structural schematic view of the application Figure 3 ; Figure 13 As Figure 12 An enlarged structural schematic view at E in the figure; Figure 14 As a cross-sectional structural schematic view of the adjusting unit in the application.

[0020] The figure shows: 1, upper mold; 2, lower mold; 3, guide column; 4, lower fixed plate; 5, pouring gate; 6, ejection frame; 7, ejection cylinder; 8, return spring; 9, first connecting plate; 10, rotating block; 11, forming cavity; 12, forming block; 13, upper fixed plate; 14, ejection rod; 15, first motor; 16, rotating plate; 17, first connecting rod; 18, infrared length detector; 19, through groove; 20, arc-shaped adjusting rod; 21, first insertion rod; 22, insertion groove; 23, first inclined surface; 24, deep groove; 25, first clamping groove; 26, push block; 27, first spring; 28, connecting ring; 29, elastic connecting rod; 30, second motor; 31, rotating gear; 32, rotating gear ring; 33, ring-shaped clamping protrusion; 34, ring-shaped clamping groove; 35, inner connecting rod; 36, outer connecting rod; 37, second clamping groove; 38, first clamping plate; 39, second spring; 40, third clamping groove; 41, clamping plate; 42, second connecting rod; 43, second insertion rod; 44, anti-disengagement plate; 45, moving rod; 46, third spring; 47, material taking plate; 48, material taking curved surface; 49, third connecting rod; 50, third insertion rod; 51, second connecting plate; 52, fourth spring; 53, fixed ring; 54, guide rod; 55, insertion protrusion; 56, fifth clamping groove; 57, fourth connecting rod; 58, blocking plate. DETAILED DESCRIPTION

[0021] The application will be described in detail below, and the technical solutions in the embodiments of the application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0022] As Figures 1 to 14 shown, the application provides a kind of thermoplastic type nylon carbon plate double-layer injection mold of fast reset, including upper die 1 and lower die 2, the upper die 1 and lower die 2 are connected by guide column 3, the end of the guide column 3 is connected with lower fixed plate 4, the upper die 1 is provided with pouring gate 5, the lower die 2 is provided with ejection frame 6, the lower fixed plate 4 is provided with ejection cylinder 7, the ejection cylinder 7 is used to provide the power of the ejection frame 6 to eject finished product, the ejection frame 6 is connected with the lower fixed plate 4 by reset unit, the reset unit includes multiple reset springs 8, multiple the reset spring 8 is evenly arranged in the circumferential direction of the ejection frame 6, the reset spring 8 is connected with first connecting plate 9, the first connecting plate 9 is connected with rotating block 10, the rotating block 10 is provided with detection unit for rebound ability detection of the reset spring 8, the lower fixed plate 4 is provided with rotating unit for driving the rotating block 10 to rotate in the circumferential direction of the first connecting plate 9.

[0023] The upper die 1 is provided with forming cavity 11, the lower die 2 is provided with forming block 12, the ejection frame 6 is arranged in the forming block 12, the upper die 1 is fixedly connected with upper fixed plate 13, the lower die 2 is fixedly connected with barrier plate 58 by multiple fourth connecting rods 57.

[0024] The shape of the first connecting plate 9 corresponds to the shape of the ejection frame 6, the first connecting plate 9 is connected with the output end of the ejection cylinder 7, the first connecting plate 9 is fixedly connected with ejection rod 14, the upper end of the ejection rod 14 is narrowed and connected with the ejection frame 6, the reset spring 8 is sleeved on the outer wall of the ejection rod 14, and the ejection rod 14 passes through the barrier plate 58.

[0025] When the above device is actually used, after the upper die 1 and the lower die 2 are closed, the injection liquid is input through the pouring gate 5, the mold forming operation is carried out under the cooperation of the forming cavity 11 and the forming block 12, after forming, the ejection cylinder 7 drives the ejection frame 6 to eject the finished product, and compresses the reset spring 8, when the reset spring 8 needs to be detected, the rotating unit drives the rotating block 10 to rotate, in turn drives the detection unit to rotate in the circumferential direction of the first connecting plate 9, detects the rebound ability of each reset spring 8 in turn, and the reset spring 8 with poor rebound ability can be replaced.

[0026] The lower end of the rotating block 10 is fixedly connected with first motor 15, and the output end of the first motor 15 is fixedly connected with rotating plate 16.

[0027] Combined Figure 6The upper and lower sides of the reset spring 8 are connected with fixing rings 53, the reset spring 8 is sleeved outside the guide rod 54, the lower end fixing ring 53 is fixedly connected with the guide rod 54, the upper end fixing ring 53 is sleeved outside the guide rod 54, the guide rod 54 is fixedly connected with an inserted protrusion 55, and the ejector rod 14 is provided with a fifth clamping groove 56 matched with the guide rod 54.

[0028] In combination Figure 13 And Figure 14 The detection unit comprises a first connecting rod 17 fixedly connected with the rotating plate 16, the side surface of the first connecting rod 17 is fixedly connected with an infrared length detector 18, and the first connecting rod 17 is provided with an adjusting unit for length adjustment of the reset spring 8.

[0029] The adjusting unit comprises a through groove 19 formed in the first connecting rod 17, an arc-shaped adjusting rod 20 is clamped in the through groove 19, a first inserted rod 21 is fixedly connected in the through groove 19, the arc-shaped adjusting rod 20 is provided with an inserted groove 22 matched with the first inserted rod 21, a first inclined surface 23 is arranged on the side of the arc-shaped adjusting rod 20 facing downward, a deep groove 24 is formed on the side of the inserted groove 22 away from the first inclined surface 23, a first clamping groove 25 is formed on the inner wall of the through groove 19, and a push block 26 is clamped in the first clamping groove 25. The push block 26 is connected with the inner wall of the deep groove 24 through a first spring 27 for providing elastic force.

[0030] When the detection unit is actually used, the first motor 15 drives the rotating plate 16 to rotate, drives the first connecting rod 17 arranged on the rotating plate 16 to move towards the ejector rod 14, before the arc-shaped adjusting rod 20 contacts the ejector rod 14, the arc-shaped adjusting rod 20 contacts the upper end fixing ring 53, under the guidance of the first inclined surface 23, the reset spring 8 is compressed, after the arc-shaped adjusting rod 20 contacts the ejector rod 14, the arc-shaped adjusting rod 20 moves in the direction of the first clamping groove 25, after moving to the position of the deep groove 24, under the elastic force of the first spring 27, the push block 26 drives the arc-shaped adjusting rod 20 to move upward, the first inserted rod 21 is inserted into the deep groove 24, and the reset spring 8 restores the length before being compressed. The length of the reset spring 8 is detected by the infrared length detector 18, compared with the calibrated length, the resilience of the reset spring 8 can be obtained.

[0031] In combination Figure 4 , Figure 8 , Figure 9 , Figure 10 And Figure 11The rotating unit comprises a connecting ring 28 connected with the lower fixed plate 4 through an elastic connecting rod 29, a second motor 30 fixedly connected at the lower end of the connecting ring 28, an output end of the second motor 30 fixedly connected with a rotating gear 31, an inner side of the connecting ring 28 provided with a rotating gear ring 32 engaged with the rotating gear 31, the rotating gear ring 32 fixedly connected with an annular clamping protrusion 33, the connecting ring 28 provided with an annular clamping groove 34 matched with the annular clamping protrusion 33, an inner side of the rotating gear ring 32 fixedly connected with a connecting inner rod 35, a side of the rotating block 10 fixedly connected with a connecting outer rod 36, the connecting outer rod 36 sleeved on the outer side of the connecting inner rod 35, the connecting outer rod 36 provided with a second clamping groove 37 in the inner side, an end of the connecting inner rod 35 fixedly connected with a first clamping plate 38, the first clamping plate 38 connected with the inner wall of the second clamping groove 37 through a second spring 39 for providing elastic force, the second spring 39 sleeved on the outer side of the connecting inner rod 35, the first connecting plate 9 provided with a third clamping groove 40 arranged in a ring shape, a side of the rotating block 10 fixedly connected with a clamping plate 41 clamped with the third clamping groove 40.

[0032] In actual use, the second motor 30 drives the rotating gear 31 to rotate, and then drives the rotating gear ring 32 to rotate, and drives the connecting inner rod 35, the connecting outer rod 36 and the rotating block 10 to rotate, and the second spring 39 can adjust the length of the connecting inner rod 35 extending out of the connecting outer rod 36, so as to ensure that the rotating block 10 is always attached to the side of the first connecting plate 9, and the detection unit can be conveniently detected.

[0033] In combination with Figure 13When the reset spring 8 with insufficient resilience is detected, it needs to be removed for replacement, and a material taking unit for removing the reset spring 8 is arranged on the rotating plate 16, the material taking unit comprises a second connecting rod 42 fixedly connected to the rotating plate 16, a plurality of arrayed second inserting rods 43 are inserted on the second connecting rod 42, a anti-dropping plate 44 is fixedly connected to one end of the second inserting rod 43, a moving rod 45 is fixedly connected to the other end of the second inserting rod 43, the moving rod 45 is connected to the second connecting rod 42 through a third spring 46 for providing elasticity, the third spring 46 is sleeved outside the second inserting rod 43, a pair of material taking plates 47 facing backward are arranged on the side of the moving rod 45, the material taking plate 47 at the lower end is fixedly connected to the second connecting rod 42, a material taking curved surface 48 is arranged on the material taking plate 47, a third connecting rod 49 is fixedly connected to the side of the second connecting rod 42, a third inserting rod 50 is inserted on the third connecting rod 49, one end of the third inserting rod 50 is fixedly connected to the material taking plate 47 at the upper end, a second connecting plate 51 is fixedly connected to the other end of the third inserting rod 50, the second connecting plate 51 is connected to the third connecting rod 49 through a fourth spring 52 for providing elasticity, the fourth spring 52 is sleeved outside the third inserting rod 50.

[0034] When the material taking unit is actually used, the first motor 15 drives the rotating plate 16 to rotate, at this time, the rotating direction of the first motor 15 is opposite to the rotating direction during detection, the moving rod 45 arranged on the moving rod 45 also rotates, the material taking plate 47 contacts with the fixed ring 53, under the action of the fourth spring 52, the material taking plate 47 contacts with the fixed rings 53 at the upper and lower ends and has clamping force on them, with the rotation of the rotating plate 16, the moving plate moves, the third spring 46 is stretched, when the rotating plate 16 drives the moving plate to rotate to the position where the fifth clamping groove 56 faces, under the elastic force of the third spring 46, the guide rod 54 is driven to disengage from the fifth clamping groove 56, the first motor 15 is reversed subsequently, and the reset spring 8 is removed for replacement.

[0035] The use method of the rapid reset thermoplastic nylon carbon plate double-layer injection mold comprises the following steps: Step one: the injection liquid is input into the pouring port 5, the mold forming operation is performed under the cooperation of the forming cavity 11 and the forming block 12, the ejection cylinder 7 drives the ejection frame 6 to eject the finished product, and the reset spring 8 is compressed; Step two: the resilience of the reset spring 8 is detected by the detection unit, and the reset spring 8 with unqualified resilience is marked; Step three: the reset spring 8 with unqualified resilience is removed by the material taking unit for replacement.

[0036] Working principle: after the upper die 1 and the lower die 2 are combined, the injection liquid is input through the pouring port 5, the mold forming operation is carried out under the cooperation of the forming cavity 11 and the forming block 12, after forming, the ejection cylinder 7 drives the ejection frame 6 to eject the finished product, and the compression reset spring 8 is compressed, when the reset spring 8 needs to be detected, the rotating unit drives the rotating block 10 to rotate, and then drives the detection unit to rotate in the circumferential direction of the first connecting plate 9, the resilience of each reset spring 8 is detected in turn, and the reset spring 8 with poor resilience can be replaced; the first motor 15 rotates to drive the rotating plate 16 to rotate, drives the first connecting rod 17 arranged on the rotating plate 16 to move towards the direction close to the ejection rod 14, before the arc-shaped adjusting rod 20 contacts the ejection rod 14, the arc-shaped adjusting rod 20 contacts the fixed ring 53 at the upper end, under the guidance of the first inclined surface 23, the compression reset spring 8 is compressed, after the arc-shaped adjusting rod 20 contacts the ejection rod 14, the arc-shaped adjusting rod 20 moves in the direction of the first clamping groove 25, after moving to the deep groove 24 position, under the elastic force of the first spring 27, the push block 26 drives the arc-shaped adjusting rod 20 to move upwards, the first inserting rod 21 is inserted into the deep groove 24, and the length of the reset spring 8 is detected by the infrared length detector 18, and compared with the calibrated length, the resilience of the reset spring 8 can be obtained; the second motor 30 rotates to drive the rotating gear 31 to rotate, and then drives the rotating gear ring 32 to rotate, drives the connecting inner rod 35, the connecting outer rod 36 and the rotating block 10 to rotate, and the second spring 39 can adjust the length of the connecting inner rod 35 extending out of the connecting outer rod 36, so that the rotating block 10 is always attached to the side of the first connecting plate 9, and the detection unit is convenient for detection; the first motor 15 rotates to drive the rotating plate 16 to rotate, at this time, the rotating direction of the first motor 15 is opposite to that when detection is carried out, the moving rod 45 arranged on the moving rod 45 also rotates, the taking plate 47 contacts the fixed ring 53, under the action of the fourth spring 52, the taking plate 47 contacts the fixed ring 53 at the upper and lower ends and has clamping force on the fixed ring 53, with the rotation of the rotating plate 16, the moving plate moves, the third spring 46 is stretched, when the rotating plate 16 drives the moving plate to rotate to the position where the fifth clamping groove 56 is directed, under the elastic force of the third spring 46, the guide rod 54 is driven to be separated from the fifth clamping groove 56, the first motor 15 is reversed subsequently, and the reset spring 8 is taken down for replacement.

[0037] The above description enables those skilled in the art to implement or use the present application, and various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick-reset thermoplastic nylon carbon plate double-layer injection mold, characterized in that: The invention comprises an upper mold (1) and a lower mold (2), wherein the upper mold (1) and the lower mold (2) are connected via a guide column (3), the end of the guide column (3) is connected to a lower fixed plate (4), the upper mold (1) is provided with a pouring port (5), the lower mold (2) is provided with an ejection frame (6), the lower fixed plate (4) is provided with an ejection cylinder (7), the ejection cylinder (7) is used to provide the ejection frame (6) with power to eject the finished product, and the ejection frame (6) is connected to the lower fixed plate (4) via a reset unit. The reset unit includes a plurality of reset springs (8), and the plurality of reset springs (8) are evenly arranged in the circumferential direction of the ejection frame (6). The reset spring (8) is connected to the first connecting plate (9), and the first connecting plate (9) is connected to the rotating block (10). The rotating block (10) is provided with a detection unit for detecting the rebound ability of the reset spring (8), and the lower fixed plate (4) is provided with a rotating unit for driving the rotating block (10) to rotate in the circumferential direction of the first connecting plate (9).

2. The rapid-reset thermoplastic nylon-carbon plate double-layer injection mold according to claim 1, characterized in that: The upper mold (1) is provided with a molding cavity (11), the lower mold (2) is provided with a molding block (12), the ejection frame (6) is arranged in the molding block (12), the upper mold (1) is fixedly connected to an upper fixing plate (13), and the lower mold (2) is fixedly connected to a blocking plate (58) via a plurality of fourth connecting rods (57).

3. The rapid-reset thermoplastic nylon-carbon plate double-layer injection mold according to claim 2, characterized in that: The shape of the first connecting plate (9) corresponds to the shape of the ejection frame (6). The first connecting plate (9) is connected to the output end of the ejection cylinder (7). An ejection rod (14) is fixedly connected to the first connecting plate (9). The upper end of the ejection rod (14) is narrowed and connected to the ejection frame (6). The return spring (8) is sleeved on the outer wall of the ejection rod (14). The ejection rod (14) passes through the blocking plate (58).

4. The rapid-reset thermoplastic nylon-carbon plate double-layer injection mold according to claim 3, characterized in that: The lower end of the rotating block (10) is fixedly connected to a first motor (15), and the output end of the first motor (15) is fixedly connected to a rotating plate (16).

5. The rapid-reset thermoplastic nylon-carbon plate double-layer injection mold according to claim 4, characterized in that: The detection unit comprises a first connecting rod (17) fixedly connected to the rotating plate (16), an infrared length detector (18) is fixedly connected to the side of the first connecting rod (17), and an adjustment unit for adjusting the length of the return spring (8) is provided on the first connecting rod (17).

6. The rapid-reset thermoplastic nylon-carbon plate double-layer injection mold according to claim 5, characterized in that: The adjustment unit includes a through slot (19) provided on the first connecting rod (17), an arc-shaped adjustment rod (20) being clamped in the through slot (19), a first insertion rod (21) being fixedly connected in the through slot (19), a slot (22) being provided on the arc-shaped adjustment rod (20) and cooperating with the first insertion rod (21), a first inclined surface (23) being provided on the downward side of the arc-shaped adjustment rod (20), a deep slot (24) being provided on the side of the slot (22) away from the first inclined surface (23), a first clamping slot (25) being provided on the inner wall of the through slot (19), a push block (26) being clamped in the first clamping slot (25), and the push block (26) being connected to the inner wall of the deep slot (24) via a first spring (27) for providing elastic force.

7. The rapid-reset thermoplastic nylon-carbon plate double-layer injection mold according to claim 6, characterized in that: The rotating unit comprises a connecting ring (28), the connecting ring (28) being connected to the lower fixed plate (4) via an elastic connecting rod (29), the lower end of the connecting ring (28) being fixedly connected to a second motor (30), the output end of the second motor (30) being fixedly connected to a rotating gear (31), a rotating gear ring (32) being provided on the inner side of the connecting ring (28), the rotating gear ring (32) being meshed and connected to the rotating gear (31), an annular clamping protrusion (33) being fixedly connected to the rotating gear ring (32), an annular clamping groove (34) being provided on the connecting ring (28) and cooperating with the annular clamping protrusion (33), a connecting inner rod (35) being fixedly connected to the inner side of the rotating gear ring (32), and the rotating gear ring (32) being meshed and connected to the rotating gear (31). The side surface of the rotating block (10) is fixedly connected to a connecting outer rod (36), the connecting outer rod (36) is sleeved on the outside of the connecting inner rod (35), a second clamping groove (37) is provided in the connecting outer rod (36), the end of the connecting inner rod (35) is fixedly connected to a first clamping plate (38), the first clamping plate (38) is connected to the inner wall of the second clamping groove (37) through a second spring (39) for providing elastic force, the second spring (39) is sleeved on the outside of the connecting inner rod (35), a third clamping groove (40) arranged in an annular manner is provided on the first connecting plate (9), and a clamping plate (41) clamped to the third clamping groove (40) is fixedly connected to the side surface of the rotating block (10).

8. The rapid-reset thermoplastic nylon-carbon plate double-layer injection mold according to claim 7, characterized in that: The rotating plate (16) is provided with a material taking unit for removing the return spring (8), and the material taking unit includes a second connecting rod (42) fixedly connected to the rotating plate (16), and a plurality of second insertion rods (43) distributed in an array are inserted on the second connecting rod (42), and one end of the second insertion rod (43) is fixedly connected to an anti-slip plate (44), and the other end of the second insertion rod (43) is fixedly connected to a moving rod (45), and the moving rod (45) is connected to the second connecting rod (42) through a third spring (46) for providing elastic force, and the third spring (46) is sleeved on the outside of the second insertion rod (43), and the side of the moving rod (45) is symmetrically provided with a back-facing A feeding plate (47), the feeding plate (47) at the lower end is fixedly connected to the second connecting rod (42), a feeding curved surface (48) is provided on the feeding plate (47), a side surface of the second connecting rod (42) is fixedly connected to a third connecting rod (49), a third insertion rod (50) is inserted into the third connecting rod (49), one end of the third insertion rod (50) is fixedly connected to the feeding plate (47) at the upper end, and the other end of the third insertion rod (50) is fixedly connected to the second connecting plate (51), the second connecting plate (51) is connected to the third connecting rod (49) through a fourth spring (52) for providing elastic force, and the fourth spring (52) is sleeved on the outside of the third insertion rod (50).

9. The rapid-reset thermoplastic nylon-carbon plate double-layer injection mold according to claim 8, characterized in that: The upper and lower sides of the reset spring (8) are both connected with fixing rings (53). The reset spring (8) is sleeved on the outside of the guide rod (54). The fixing ring (53) at the lower end is fixedly connected to the guide rod (54). The fixing ring (53) at the upper end is sleeved on the outside of the guide rod (54). The guide rod (54) is fixedly connected with an inserting protrusion (55). The ejection rod (14) is provided with a fifth clamping groove (56) that cooperates with the guide rod (54).

10. A method for using a rapid-reset thermoplastic nylon-carbon plate double-layer injection mold, characterized by: A quick-reset thermoplastic nylon carbon plate double-layer injection mold according to claim 9, comprising the following steps: Step 1: The injection molding liquid is input into the pouring port (5), and the mold forming operation is performed under the cooperation of the molding cavity (11) and the molding block (12). The ejection cylinder (7) drives the ejection frame (6) to eject the finished product and compresses the return spring (8); Step 2: testing the resilience of the reset spring (8) through a testing unit, and marking the reset spring (8) with unqualified resilience; Step 3: Remove the return spring (8) with unqualified rebound ability through the material removal unit for replacement.

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