Rapid discharging type plastic mold

Abstract

The utility model relates to the technical field of plastic molds, in particular to a rapid discharging type plastic mold which comprises a mold frame, a male mold and two female molds, the male mold and the female molds are both arranged in the mold frame, the male mold is located above the female molds, and the two female molds are symmetrically distributed up and down; forming grooves are formed in the outer sides of the female dies, two fixing plates distributed left and right are fixed between the two female dies, supporting shafts are fixed to the outer sides of the fixing plates, the ends of the supporting shafts are rotationally connected to the inner wall of the die frame, and a turnover braking assembly is arranged on the right side in the die frame; a top plate is arranged in each forming groove, and two lifting plates which are distributed up and down are arranged between the two female dies; according to the utility model, the next female die can be quickly replaced for plastic part processing, so that the waiting time is saved, the subsequent plastic part processing efficiency is effectively improved, the trouble of manual demolding and material taking is effectively reduced, and compared with the prior art, the demolding and discharging operation is more automatic and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a plastic mould technical field especially is related to a quick discharge type plastic mould. BACKGROUND

[0002] The plastic mould is a kind of combined mould for compression moulding, extrusion moulding, injection moulding, blow moulding and low-foam forming. By the coordinated change of the male and female dies and the auxiliary forming system, a series of plastic parts with different shapes and sizes can be processed. After the plastic parts are formed in the forming groove, they need to be taken out.

[0003] Referring to Chinese patent authorized announcement No.CN222115753U discloses a quick discharge type plastic mould, comprising: a frame, a support seat is connected inside the frame, a lower mould is arranged on the top of the support seat;Lifting plate is arranged inside the support seat, lifting plate is connected with lifting column on the top of lifting plate, lifting column penetrates support seat and lower mould and is connected with top plate;The utility model liquid flows to the inside of lower mould through liquid inlet pipe, and makes lower mould process into complete plastic mould;Because the toothed plate and the gear are meshingly arranged, the gear and the threaded cylinder can be driven to rotate, the threaded column will be rotated out, and the lifting plate, the lifting column and the top plate will be moved upward, which will eject the processed plastic mould and quickly take out the material;The moving plate and the connecting column are pushed to the initial position by the elastic force of the spring, and the lifting plate, the lifting column and the top plate will move to the initial position to form the state of the next material taking.

[0004] From the above comparison file, it can be seen that the prior art still has the following shortcomings. Because most of the existing moulds are provided with only one female die, it is necessary to wait for the plastic parts in the female die to be taken out before the next plastic part is injection molded, which wastes a lot of waiting time and affects the efficiency of subsequent plastic part processing. In addition, although the processed plastic parts can be ejected and discharged during demolding, the ejection and demolding operation often needs to be manually operated, and the plastic parts need to be manually taken out after demolding, so the convenience of demolding and discharging needs to be improved. In addition, the prior art. UTILITY MODEL CONTENTS

[0005] The utility model provides a quick discharge type plastic mould, which is beneficial to effectively improving the efficiency of subsequent plastic part processing and better improving the convenience of demolding and discharging.

[0006] In order to solve the problems in the prior art, the utility model discloses a quick discharge type plastic mould, which comprises a mould frame, a male die and two female dies, the male die and the female dies are arranged in the mould frame, the male die is located above the female dies, and the two female dies are symmetrically distributed above and below.

[0007] The outer side of the concave die is provided with a forming groove, two fixing plates are fixed between the two concave dies and are distributed left and right, the outer side of the fixing plate is fixed with a support shaft, the end of the support shaft is rotationally connected to the inner wall of the die holder, and the right side of the inner wall of the die holder is provided with a turnover brake assembly;

[0008] The inner side of the concave die is provided with a forming groove, two fixing plates are fixed between the two concave dies and are distributed left and right, the outer side of the fixing plate is fixed with a support shaft, the end of the support shaft is rotationally connected to the inner wall of the die holder, and the right side of the inner wall of the die holder is provided with a turnover brake assembly;

[0009] Further, the top end of the die holder is fixed with a hydraulic cylinder, and the upper end of the convex die is connected to the power end of the hydraulic cylinder.

[0010] Further, the upper end of the die holder is fixed with a feeding hopper, the lower end of the feeding hopper is communicated with a telescopic pipe penetrating into the die holder, the upper end of the convex die is provided with an injection port penetrating up and down, and the telescopic pipe is communicated with the injection port on the convex die.

[0011] Further, the inner side of the fixing plate is provided with two first heat dissipation fans, and the inner wall of the die holder is provided with second heat dissipation fans on both sides, and the second heat dissipation fans are close to the upper concave die.

[0012] Further, the turnover brake assembly comprises a brake motor, a PLC controller, a main gear and a secondary gear, the brake motor and the PLC controller are connected to the right wall in the die holder, the main gear is connected to the power end of the brake motor, the secondary gear is fixedly sleeved on the periphery of the adjacent support shaft, and the secondary gear is engaged with the main gear.

[0013] Further, the electromagnet is connected in series with the adjacent proximity switch.

[0014] Compared with the prior art, the beneficial effects realized by the utility model are:

[0015] 1. By setting two concave dies, the turnover brake assembly is combined to work, so that the two concave dies are conveniently driven to turn over and change position, therefore, after the plastic parts in the previous concave die are processed, the next concave die is quickly replaced for plastic part processing, so that the waiting time is saved, and the efficiency of subsequent plastic part processing is effectively improved.

[0016] 2. By approaching the proximity switch to the proximity plate, the proximity switch on the lower cavity die is automatically started and controls the electromagnetic iron to be electrified, the electromagnetic iron is attracted to the corresponding magnetic block by magnetic force, and the top plate pushes the molded plastic part out of the forming groove, which is beneficial to achieve the effect of automatic demolding and discharging, and the demolded plastic part automatically falls into the receiving concave box for collection and storage, thereby eliminating the need for manual material taking, effectively reducing the trouble of manual demolding and material taking, and compared with the prior art, the demolding and discharging operation is more automatic and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Fig. 2 It is a schematic diagram of the cavity die structure of the utility model;

[0019] Fig. 3 It is a schematic diagram of the overall working structure of the utility model.

[0020] Figs. 1-3 Mold base 1, punch 2, cavity die 3, fixed plate 4, hydraulic cylinder 5, telescopic pipe 6, feeding hopper 7, forming groove 8, top plate 9, lifting plate 10, return spring 11, magnetic block 12, electromagnetic iron 13, ejector pin 14, first cooling fan 15, second cooling fan 16, support shaft 17, brake motor 18, main gear 20, auxiliary gear 21, PLC controller 22, receiving concave box 23, proximity switch 24, proximity plate 25. DETAILED DESCRIPTION

[0021] A quick discharging type plastic mold:

[0022] As shown in Figs. 1-3 The embodiment includes a mold base 1, a punch 2 and two cavity dies 3, the punch 2 and the cavity dies 3 are arranged in the mold base 1, the punch 2 is located above the cavity dies 3, the two cavity dies 3 are symmetrically distributed above and below, the outer side of each cavity die 3 is provided with a forming groove 8, two fixed plates 4 are fixed between the two cavity dies 3 and are distributed left and right, a hydraulic cylinder 5 is fixed at the top end of the mold base 1, the upper end of the punch 2 is connected with the power end of the hydraulic cylinder 5, a feeding hopper 7 is fixed on the upper end of the mold base 1, the lower end of the feeding hopper 7 is connected with a telescopic pipe 6 which penetrates into the mold base 1, an injection port which penetrates up and down is formed in the upper end of the punch 2, the telescopic pipe 6 is connected with the injection port on the punch 2, two first cooling fans 15 are installed on the inner side of each fixed plate 4, second cooling fans 16 are installed on the inner wall of the mold base 1 and are close to the upper cavity die 3.

[0023] When the plastic part is injection molded by the mold, the male die 2 is driven downward by the extension of the hydraulic cylinder 5, the male die 2 covers the upper end of the female die 3, and then the hot melt plastic is added into the molding groove 8 of the upper female die 3 through the feeding hopper 7, the telescopic pipe 6 and the injection port. During the cooling and molding of the plastic, the female die 3 is air-cooled by the cooperation of the first cooling fan 15 and the second cooling fan 16, which is beneficial to improve the efficiency of the cooling and molding of the plastic part in the female die 3.

[0024] As shown in Figs. 1-3 In this embodiment, the outer side of the fixed plate 4 is fixed with a support shaft 17, the end of the support shaft 17 is rotatably connected to the inner wall of the mold frame 1, the right side of the mold frame 1 is provided with a turnover brake assembly, the turnover brake assembly includes a brake motor 18, a PLC controller 22, a main gear 20 and a secondary gear 21, the brake motor 18 and the PLC controller 22 are connected to the right wall of the mold frame 1, the main gear 20 is connected to the power end of the brake motor 18, and the secondary gear 21 is fixedly sleeved on the outer periphery of the adjacent support shaft 17, and the secondary gear 21 is engaged with the main gear 20.

[0025] When the plastic part is cooled and molded, the male die 2 is driven upward and reset by the contraction of the hydraulic cylinder 5, the PLC controller 22 is set to be electrically connected with the brake motor 18, the brake motor 18 is controlled to work by the PLC controller 22, and the brake motor 18 drives the main gear 20, the secondary gear 21, the support shaft 17, the fixed plate 4 and the female die 3 to turn over by one hundred and eighty degrees, so as to conveniently drive the two female dies 3 to turn over and change position, so that after the plastic part in the previous female die 3 is processed, the next female die 3 can be quickly replaced for plastic part processing, thereby saving waiting time and effectively improving the efficiency of subsequent plastic part processing.

[0026] As shown in Fig. 2 , 3 In this embodiment, the molding groove 8 is provided with a top plate 9, two lifting plates 10 are arranged between the two female dies 3, at least two return springs 11 are connected between the lifting plate 10 and the adjacent female die 3, two top rods 14 are connected between the top plate 9 and the adjacent lifting plate 10, the top rod 14 slidably penetrates through the adjacent female die 3, the female die 3 is provided with an electromagnet 13 on the inner side, the inner side of the electromagnet 13 is provided with a magnetic attraction block 12 connected to the lifting plate 10, the left side of the female die 3 is fixed with a proximity switch 24, the lower end of the mold frame 1 is provided with a receiving recess box 23, the left side of the receiving recess box 23 is provided with a proximity plate 25 corresponding to the proximity switch 24, and the electromagnet 13 is connected in series with the adjacent proximity switch 24.

[0027] When the two recess molds 3 are flipped up and down, the proximity switch 24 on the lower recess mold 3 is close to the proximity plate 25, and the proximity switch 24 is set to be able to sense the proximity plate 25, the proximity switch 24 is started and controls the electromagnet 13 on the lower recess mold 3 to work, the electromagnet 13 will attract the adjacent magnetic block 12 by magnetic force, so that the magnetic block 12 drives the corresponding lifting plate 10 to push the ejector pin 14 into the forming groove 8, at the same time, the lifting plate 10 will compress the return spring 11, and the ejector pin 14 will push the top plate 9 out of the lower forming groove 8, so that the top plate 9 will push the molded plastic parts out of the forming groove 8, so as to achieve the effect of automatic demolding and discharging. Since the slot of the forming groove 8 on the lower recess mold 3 is downward, and the receiving recess box 23 is placed below the forming groove 8, the molded plastic parts will automatically fall into the receiving recess box 23 for collection and storage. Therefore, manual material taking is not required, the trouble of manual demolding and material taking is effectively reduced, and compared with the prior art, the demolding and discharging operation is more automatic and convenient.

[0028] As shown in Fig. 2 , 3 In this embodiment, the forming groove 8 is provided with a top plate 9, two lifting plates 10 are arranged between the two recess molds 3 in an up-down distribution, at least two return springs 11 are arranged between the lifting plate 10 and the adjacent recess mold 3, two ejector pins 14 are arranged between the top plate 9 and the adjacent lifting plate 10, the ejector pin 14 is slidably penetrated through the adjacent recess mold 3, the electromagnet 13 is arranged inside the recess mold 3, the magnetic block 12 is arranged inside the electromagnet 13 and connected to the lifting plate 10, and the proximity switch 24 is fixed to the left side of the recess mold 3.

[0029] When the two recess molds 3 are flipped up and down, the proximity switch 24 on the upper recess mold 3 is set to be unable to sense the proximity plate 25, so the proximity switch 24 on the upper recess mold 3 is disconnected, and the corresponding electromagnet 13 is also disconnected. Therefore, the electromagnet 13 on the upper recess mold 3 will not attract the magnetic block 12 after being powered off, and the lifting plate 10, the ejector pin 14 and the top plate 9 will be reset by the rebound force of the return spring 11, so as to ensure the normal use of the upper recess mold 3 and the forming groove 8.

Claims

1. Quick discharge type plastic mold, including mold frame (1), punch (2) and two female die (3) The punch (2) and female die (3) are arranged in the mold frame (1), the punch (2) is located above the female die (3), and the two female die (3) are symmetrically distributed above and below, characterized in that: The female die (3) is provided with a forming groove (8) on the outside, two fixed plates (4) are fixed between the two female die (3), the fixed plate (4) is provided with a support shaft (17) on the outside, the end of the support shaft (17) is rotatably connected to the inner wall of the mold frame (1), and the right side of the mold frame (1) is provided with a turnover brake assembly; The forming groove (8) is provided with a top plate (9), two lifting plates (10) are arranged between the two female die (3), the lifting plate (10) is connected with the adjacent female die (3) through at least two return springs (11), the top plate (9) is connected with the adjacent lifting plate (10) through two top rods (14), the top rod (14) is slidably connected through the adjacent female die (3), the female die (3) is connected with an electromagnet (13) on the inside, the electromagnet (13) is provided with a magnetic block (12) connected to the lifting plate (10) on the inside, the left side of the female die (3) is fixed with a proximity switch (24), and the lower end of the mold frame (1) is provided with a receiving concave box (23). The left side of the receiving concave box (23) is connected with a proximity plate (25) corresponding to the proximity switch (24).

2. The rapid ejection plastic mold according to claim 1, wherein: The mold frame (1) is fixed with a hydraulic cylinder (5) at the top end, and the upper end of the punch (2) is connected with the power end of the hydraulic cylinder (5).

3. The rapid ejection plastic mold according to claim 1, wherein: The upper end of the mold frame (1) is fixed with a feeding hopper (7), the lower end of the feeding hopper (7) is communicated with a telescopic pipe (6) penetrating into the mold frame (1), the upper end of the punch (2) is provided with an injection port penetrating up and down, and the telescopic pipe (6) is communicated with the injection port on the punch (2).

4. The rapid ejection plastic mold according to claim 1, wherein: The inner side of the fixed plate (4) is provided with two first cooling fans (15), and the inner wall of the mold frame (1) is provided with second cooling fans (16) on both sides, and the second cooling fans (16) are close to the upper female die (3).

5. The rapid ejection plastic mold according to claim 1, wherein: The turnover brake assembly comprises a brake motor (18), a PLC controller (22), a main gear (20) and a secondary gear (21), the brake motor (18) and the PLC controller (22) are connected to the right wall of the mold frame (1), the main gear (20) is connected to the power end of the brake motor (18), the secondary gear (21) is fixedly sleeved on the outer periphery of the adjacent support shaft (17), and the secondary gear (21) is engaged with the main gear (20).

6. The rapid ejection plastic mold according to claim 1, wherein: The electromagnet (13) is connected in series with the adjacent proximity switch (24).

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