CN112248380A

CN112248380A - Injection mold capable of automatically stripping materials

Info

Publication number: CN112248380A
Application number: CN202011035534.XA
Authority: CN
Inventors: 李贺; 昌炜
Original assignee: Wuhu Youheng Mould Co ltd
Current assignee: Wuhu Youheng Mould Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-01-22

Abstract

The invention relates to the technical field of injection molds and discloses an injection mold capable of automatically stripping materials, which comprises a supporting base, wherein four corners at the top end of the supporting base are fixedly connected with supporting rods, a fixing plate is fixedly connected between the top ends of the four supporting rods, the bottom end of the fixing plate is fixedly provided with a cylinder, an output shaft of the cylinder is fixedly connected with an upper mold, the top end of the supporting base is fixedly connected with a lower mold, the lower mold is matched with the upper mold, and a first installation cavity and a second installation cavity are respectively formed in the lower mold. The automatic injection molding piece demoulding device is reasonable in structure and convenient to use, can automatically drive the ejector block to move upwards to push an injection molding piece to demould in the process that the cylinder drives the upper die to move downwards, can achieve the effect of automatic demoulding without adding a driving motor, saves more energy, has the locking effect, enables the upper die and the lower die to be matched more tightly, does not generate a gap in the injection molding process, and enables the yield of injection molding finished products to be higher.

Description

Injection mold capable of automatically stripping materials

Technical Field

The invention relates to the technical field of injection molds, in particular to an injection mold capable of automatically stripping materials.

Background

An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification. The injection mold is divided into a thermosetting plastic mold and a thermoplastic plastic mold according to the molding characteristics; according to the forming process, the method is divided into a transfer mold, a blow mold, a cast mold, a hot forming mold, a hot pressing mold (compression mold), an injection mold and the like, wherein the hot pressing mold can be divided into a flash type, a semi-flash type and a non-flash type by a flash mode, and the injection mold can be divided into a cold runner mold and a hot runner mold by a pouring system; the device can be divided into a movable type and a fixed type according to the loading and unloading mode.

At present, need carry out the drawing of patterns in injection mold's course of working, however, current shedder needs manual work or motor to drive mostly, and the cost of labor is high, and inefficiency, and is very inconvenient, and motor drive breaks down easily again, consumes the energy.

Disclosure of Invention

The invention provides an injection mold capable of automatically stripping materials, which solves the problems in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme:

an injection mold capable of automatically stripping materials comprises a supporting base, wherein supporting rods are fixedly connected to four corners at the top end of the supporting base, a fixing plate is fixedly connected between the top ends of the four supporting rods, an air cylinder is fixedly installed at the bottom end of the fixing plate, an upper mold is fixedly connected to an output shaft of the air cylinder, a lower mold is fixedly connected to the top end of the supporting base, the lower mold is matched with the upper mold, a first installation cavity and a second installation cavity are respectively formed in the lower mold, a first gear and a second gear are respectively rotatably installed in the first installation cavity, synchronizing wheels are respectively fixedly connected to one sides of the first gear and the second gear, the two synchronizing wheels are connected through a synchronizing belt, a rectangular opening is formed in one side, close to the first installation cavity, of the lower mold, the rectangular opening is communicated with the first installation cavity, a lifting plate is slidably installed in the rectangular opening, one side of the lifting plate extends to, a vertically arranged push rod is fixedly connected to one side of the upper die close to the extrusion block, the push rod corresponds to the extrusion block, one side of the lifting plate far away from the extrusion block extends into the first mounting cavity and is fixedly connected with a vertically arranged first rack, the first rack is meshed with a second gear, a first slider and a second slider are respectively arranged on the inner wall of the bottom end of the second mounting cavity in a sliding manner, the top ends of the first slider and the second slider are respectively hinged with a connecting rod, a lifting rod is hinged between the top ends of the two connecting rods, the top end of the lifting rod is fixedly connected with a top block, a partition plate is fixedly connected between the first slider and the second slider on the inner wall of the bottom end of the second mounting cavity, an opening is formed in the partition plate, a second rack is fixedly connected to one side of the first slider and the second slider close to each other, a third gear is rotatably arranged in the opening through a rotating, and the third gear is meshed with the two second racks, one side of the first sliding block, which is far away from the second sliding block, is fixedly connected with the third rack, the third rack is meshed with the first gear, and elastic mechanisms are fixedly connected between the two sides of the partition plate and the first sliding block and between the two sides of the partition plate and the second sliding block.

Preferably, the elastic mechanism comprises a first horizontal rod and a second horizontal rod, a mounting groove is formed in one end of the first horizontal rod, one end of the second horizontal rod is slidably mounted in the mounting groove, and a buffer spring is fixedly connected between one end of the second horizontal rod and the inner wall of the mounting groove.

Preferably, two slide rails are fixedly connected to the inner wall of the bottom end of the second mounting cavity, and the first slide block and the second slide block are respectively and correspondingly slidably mounted on the two slide rails.

Preferably, a guide rod is fixedly connected between the inner wall of the top end of the rectangular opening and the inner wall of the bottom end of the rectangular opening, a guide sleeve is fixedly mounted on the lifting plate, and the guide sleeve is slidably mounted outside the guide rod.

Preferably, the top end of the extrusion block is provided with a matching groove, and the matching groove is matched with the push rod.

Preferably, the two sides of the upper die are fixedly connected with guide plates, guide holes are formed in the guide plates, and the support rods penetrate through the guide plates through the guide holes.

Preferably, the equal fixedly connected with locating lever in four turnings in top of bed die, the constant head tank has all been seted up with the locating lever corresponding position in the bottom of going up the mould, and the top of locating lever extends to in the constant head tank.

Preferably, one side fixed mounting that the bed die is kept away from the extrusion piece has first push rod motor, the output shaft fixedly connected with fourth rack of first push rod motor, the top of supporting the base is rotated and is installed the cylinder, cylindrical outside fixedly connected with fourth gear, fourth gear meshes with the fourth rack mutually, the third installation cavity has been seted up on the cylinder, equal fixedly connected with second push rod motor on the top inner wall of third installation cavity and the bottom inner wall, the output shaft fixedly connected with connecting rod of second push rod motor, the slip mouth has been seted up in the cylindrical outside, the one end of connecting rod extends to cylindrical outside and fixedly connected with locking splint through the slip mouth, go up mould and bed die and be close to the equal fixedly connected with locking piece in cylinder one side.

Preferably, the locking groove has all been seted up to the one side that two locking pieces kept away from each other, and the equal fixedly connected with locking in one side that two locking splint are close to is protruding, locking arch and locking groove phase-match.

The invention has the beneficial effects that:

1. through the transmission action among the components, when the cylinder drives the upper die to move upwards and separate from the lower die, the elastic mechanism has tension due to the elastic action of the buffer spring, the first sliding block and the second sliding block can be mutually pulled on the sides close to each other downwards, and under the action of no external force, the first sliding block and the second sliding block are close to each other and push the lifting rod upwards through the connecting rod, so that the ejector block is pushed upwards to achieve the effect of pushing the injection molding piece to automatically demold;

2. the fourth rack can be driven to move horizontally by the first push rod motor, so that the cylinder can be driven to rotate by the engagement of the fourth rack and the fourth gear, the locking clamp plate can be rotated to one side far away from the upper die by the rotation of the cylinder, the upper die cannot be blocked from moving, the two locking clamp plates can be pushed to move close to each other by the second push rod motor, so that the two locking blocks can be clamped and fixed, the purpose of locking the upper die and the lower die is achieved, the upper die and the lower die are matched more tightly, no gap is generated in the injection molding process, and the yield of injection molded products is higher;

the automatic injection molding piece demoulding device is reasonable in structure and convenient to use, can automatically drive the ejector block to move upwards to push an injection molding piece to demould in the process that the cylinder drives the upper die to move downwards, can achieve the effect of automatic demoulding without adding a driving motor, saves more energy, has the locking effect, enables the upper die and the lower die to be matched more tightly, does not generate a gap in the injection molding process, and enables the yield of injection molding finished products to be higher.

Drawings

Fig. 1 is a main view cross-sectional view of an upper mold and a lower mold of an injection mold capable of automatically stripping materials according to the present invention.

Fig. 2 is a front view of an injection mold capable of automatically stripping materials according to the present invention.

FIG. 3 is an enlarged view of the position A of the injection mold with automatic material stripping of the present invention.

Fig. 4 is an enlarged view of a position B of an injection mold capable of automatically discharging material according to the present invention.

Fig. 5 is a main perspective cross-sectional view of a cylinder of an injection mold capable of automatically stripping material according to the present invention.

Reference numbers in the figures: 1 supporting base, 2 supporting rods, 3 fixing plates, 4 cylinders, 5 upper dies, 6 guide plates, 7 guide holes, 8 lower dies, 9 positioning rods, 10 push rods, 11 first push rod motors, 12 cylinders, 13 fourth racks, 14 fourth gears, 15 third mounting cavities, 16 second push rod motors, 17 connecting rods, 18 sliding ports, 19 locking clamping plates, 20 locking bulges, 21 first mounting cavities, 22 second mounting cavities, 23 second sliding blocks and 24 sliding rails, 25 second racks, 26 partition boards, 27 openings, 28 third gears, 29 second horizontal rods, 30 first horizontal rods, 31 buffer springs, 32 connecting rods, 33 lifting rods, 34 top blocks, 35 first sliding blocks, 36 third racks, 37 first gears, 38 second gears, 39 synchronizing wheels, 40 synchronizing belts, 41 guide rods, 42 lifting plates, 43 guide sleeves, 44 first racks, 45 extrusion blocks, 46 matching grooves and 47 locking blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-5, an injection mold capable of automatically stripping materials comprises a supporting base 1, supporting rods 2 are fixedly connected to four corners of the top end of the supporting base 1, a fixing plate 3 is fixedly connected between the top ends of the four supporting rods 2, an air cylinder 4 is fixedly installed at the bottom end of the fixing plate 3, an upper mold 5 is fixedly connected to an output shaft of the air cylinder 4, a lower mold 8 is fixedly connected to the top end of the supporting base 1, the lower mold 8 is matched with the upper mold 5, a first installation cavity 21 and a second installation cavity 22 are respectively formed in the lower mold 8, a first gear 37 and a second gear 38 are respectively rotatably installed in the first installation cavity 21, synchronizing wheels 39 are respectively and fixedly connected to one sides of the first gear 37 and the second gear 38, the two synchronizing wheels 39 are connected through a synchronizing belt 40, a rectangular opening is formed in one side of the lower mold 8 close to the first installation cavity 21, and is communicated with the first, a lifting plate 42 is slidably mounted in the rectangular opening, one side of the lifting plate 42 extends to the outside of the lower die 8 and is fixedly connected with an extrusion block 45, one side of the upper die 5, which is close to the extrusion block 45, is fixedly connected with a vertically arranged push rod 10, the push rod 10 corresponds to the extrusion block 45, one side of the lifting plate 42, which is far away from the extrusion block 45, extends into the first mounting cavity 21 and is fixedly connected with a vertically arranged first rack 44, the first rack 44 is meshed with a second gear 38, the bottom inner wall of the second mounting cavity 22 is respectively and slidably mounted with a first slider 35 and a second slider 23, the top ends of the first slider 35 and the second slider 23 are respectively and hingedly connected with a connecting rod 32, a lifting rod 33 is hinged between the top ends of the two connecting rods 32, the top end of the lifting rod 33 is fixedly connected with a top block 34, and a partition plate 26 is fixedly connected between the first slider 35 and the second slider 23, seted up trompil 27 on the baffle 26, the equal fixedly connected with second rack 25 in one side that first slider 35 and second slider 23 are close to each other, install third gear 28 through the pivot rotation in the trompil 27, third gear 28 is located between two second racks 25, and third gear 28 and two equal engagements of second rack 25, one side fixedly connected with third rack 36 of second slider 23 is kept away from to first slider 35, third rack 36 meshes with first gear 37 mutually, equal fixedly connected with elastic mechanism between the both sides of baffle 26 and first slider 35 and the second slider 23.

Wherein, elastic mechanism includes first horizon bar 30 and second horizon bar 29, the mounting groove has been seted up to the one end of first horizon bar 30, the one end slidable mounting of second horizon bar 29 is in the mounting groove, and fixedly connected with buffer spring 31 between the inner wall of the one end of second horizon bar 29 and mounting groove, because buffer spring 31's elastic action makes elastic mechanism have the pulling force, can stimulate one side that first slider 35 and second slider 23 are close to each other downwards, under the effect of not having the external force, first slider 35 and second slider 23 are close to each other and upwards promote lifter 33 through connecting rod 32, thereby upwards promote kicking block 34 and reach the effect that promotes the automatic drawing of patterns of injection molding.

Wherein, two slide rails 24 are fixedly connected to the inner wall of the bottom end of the second mounting cavity 22, the first slide block 35 and the second slide block 23 are respectively and correspondingly slidably mounted on the two slide rails 24, and the slide rails 24 play a role in guiding the horizontal movement of the first slide block 35 and the second slide block 23.

Wherein, fixedly connected with guide bar 41 between the open-ended top inner wall of rectangle and the bottom inner wall, fixed mounting has guide sleeve 43 on the lifter plate 42, and guide sleeve 43 slidable mounting is in the outside of guide bar 41, and guide bar 41 plays the sliding guide effect to lifter plate 42 elevating movement with the sliding fit of guide sleeve 43.

Wherein, the top of extrusion piece 45 has seted up cooperation groove 46, and cooperation groove 46 matches with push rod 10, can insert in cooperation groove 46 when push rod 10 moves down, continues the downstream and can extrude briquetting 45 downwards.

Wherein, go up the equal fixedly connected with deflector 6 in both sides of mould 5, seted up guiding hole 7 on deflector 6, bracing piece 2 runs through deflector 6 through guiding hole 7, and deflector 6 slides in the outside of bracing piece 2 through guiding hole 7 and plays the guide effect to last mould 5 up-and-down motion for it is more stable that last mould 5 goes up and down.

Wherein, the equal fixedly connected with locating lever 9 in four turnings in bottom of bed die 8's top, the constant head tank has all been seted up with locating lever 9 corresponding position to the bottom of going up mould 5, and in the top of locating lever 9 extended to the constant head tank, the cooperation of locating lever 9 and constant head tank made the bed die 8 more accurate with the cooperation of last mould 5 for the quality of moulding plastics is higher.

Wherein, one side of the lower die 8 far away from the extrusion block 45 is fixedly provided with a first push rod motor 11, an output shaft of the first push rod motor 11 is fixedly connected with a fourth rack 13, the top end of the supporting base 1 is rotatably provided with a cylinder 12, the outer side of the cylinder 12 is fixedly connected with a fourth gear 14, the fourth gear 14 is meshed with the fourth rack 13, when the fourth rack 13 can be driven by the first push rod motor 11 to move horizontally, so that the cylinder 12 can be driven to rotate by the meshing of the fourth rack 13 and the fourth gear 14, the cylinder 12 can rotate to rotate the locking clamp plate 19 to one side far away from the upper die 5, so as not to block the upper die 5 from moving, the cylinder 12 is provided with a third installation cavity 15, the inner wall of the top end and the inner wall of the third installation cavity 15 are both fixedly connected with a second push rod motor 16, the output shaft of the second push rod motor 16 is fixedly connected with a connecting rod 17, the outer, one end of the connecting rod 17 extends to the outside of the cylinder 12 through the sliding port 18 and is fixedly connected with a locking clamping plate 19, the upper die 5 and the lower die 8 are close to the equal fixedly connected with locking block 47 on one side of the cylinder 12, the two locking clamping plates 19 can be pushed to move close to each other through the second push rod motor 16, so that the two locking blocks 47 can be clamped and fixed, the purpose of locking the upper die 5 and the lower die 8 is achieved, the upper die 5 and the lower die 8 are matched more tightly, gaps can not be generated in the injection molding process, and the injection molding finished product yield is higher.

Wherein, two locking blocks 47 one side of keeping away from each other has all been seted up and has been locked the groove, and the equal fixedly connected with locking arch 20 in one side that two locking splint 19 are close to locks protruding 20 and locking groove phase-match, and the cooperation that locking arch 20 and locking groove make that last mould 5 and bed die 8 can be more stable be locked together.

The working principle is as follows: when the cylinder 4 drives the upper die 5 to move upwards and separate from the lower die 8, the elastic mechanism has a pulling force due to the elastic action of the buffer spring 31, and can pull the sides of the first slider 35 and the second slider 23 which are close to each other downwards, and under the condition of no external force, the first slider 35 and the second slider 23 are close to each other and push the lifting rod 33 upwards through the connecting rod 32, so as to push the top block 34 upwards to achieve the effect of pushing the injection molding piece to automatically demold, when the cylinder 4 drives the upper die 5 to move downwards, the push rod 10 moves downwards to push the extrusion block 45 in the process that the upper die 5 and the lower die 8 are combined together, and further pushes the first rack 44 downwards, so as to drive the second gear 38 to rotate, the first gear 37 can be driven to rotate synchronously through the transmission effect of the synchronous wheel 39 and the synchronous belt 40, and further the first slider 35 is driven to move leftwards through the meshing of the first gear 37 and the third rack 36 (at this time, the second sliding block 23 can be driven to move rightwards synchronously through the meshing of the second rack 25 and the third teeth 28, the first sliding block 35 and the second sliding block 23 are driven to move away from each other, the effect of driving the lifting rod 33 to move downwards is achieved, the ejector block 34 is driven to move downwards and is combined with the lower die 8, the shape of an injection molding piece cannot be influenced in the injection molding process, the ejector block 34 can be automatically pushed upwards due to the elastic force of the buffer spring 31 after injection molding is finished, the injection molding piece is ejected out from the lower die 8, a driving motor does not need to be additionally added, the effect of automatic demolding can be achieved, and energy is saved more.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An injection mold capable of automatically stripping materials comprises a supporting base (1) and is characterized in that four corners at the top end of the supporting base (1) are fixedly connected with supporting rods (2), a fixing plate (3) is fixedly connected between the top ends of the four supporting rods (2), a cylinder (4) is fixedly mounted at the bottom end of the fixing plate (3), an upper mold (5) is fixedly connected with an output shaft of the cylinder (4), a lower mold (8) is fixedly connected with the top end of the supporting base (1), the lower mold (8) is matched with the upper mold (5), a first mounting cavity (21) and a second mounting cavity (22) are respectively formed in the lower mold (8), a first gear (37) and a second gear (38) are respectively rotatably mounted in the first mounting cavity (21), and synchronizing wheels (39) are respectively fixedly connected at one side of the first gear (37) and one side of the second gear (38), two synchronizing wheels (39) are connected through a synchronous belt (40), a rectangular opening is formed in one side, close to a first installation cavity (21), of a lower die (8), the rectangular opening is communicated with the first installation cavity (21), a lifting plate (42) is installed in the rectangular opening in a sliding mode, one side of the lifting plate (42) extends to the outer portion of the lower die (8) and is fixedly connected with an extrusion block (45), one side, close to the extrusion block (45), of an upper die (5) is fixedly connected with a vertically arranged push rod (10), the push rod (10) corresponds to the extrusion block (45), one side, far away from the extrusion block (45), of the lifting plate (42) extends into the first installation cavity (21) and is fixedly connected with a vertically arranged first rack (44), the first rack (44) is meshed with a second gear (38), a first sliding block (35) and a second sliding block (23) are installed on the inner wall of the bottom end of a second installation cavity (22) in a sliding mode respectively, the top ends of the first sliding block (35) and the second sliding block (23) are respectively hinged with a connecting rod (32), a lifting rod (33) is hinged between the top ends of the two connecting rods (32), the top end of the lifting rod (33) is fixedly connected with a top block (34), a partition plate (26) is fixedly connected between the first sliding block (35) and the second sliding block (23) on the inner wall of the bottom end of the second mounting cavity (22), an opening (27) is formed in the partition plate (26), one side, close to each other, of the first sliding block (35) and one side, close to the second sliding block (23) are respectively and fixedly connected with a second rack (25), a third gear (28) is rotatably mounted in the opening (27) through a rotating shaft, the third gear (28) is located between the two second racks (25), the third gear (28) is respectively meshed with the two second racks (25), one side, far away from the second sliding block (23), of the first sliding block (35) is, the third rack (36) is meshed with the first gear (37), and elastic mechanisms are fixedly connected between the two sides of the partition plate (26) and the first sliding block (35) and the second sliding block (23).

2. The injection mold capable of automatically stripping materials as claimed in claim 1, wherein the elastic mechanism comprises a first horizontal rod (30) and a second horizontal rod (29), one end of the first horizontal rod (30) is provided with an installation groove, one end of the second horizontal rod (29) is slidably installed in the installation groove, and a buffer spring (31) is fixedly connected between one end of the second horizontal rod (29) and the inner wall of the installation groove.

3. The injection mold capable of automatically stripping materials as claimed in claim 1, wherein two slide rails (24) are fixedly connected to the inner wall of the bottom end of the second mounting cavity (22), and the first slide block (35) and the second slide block (23) are respectively and correspondingly slidably mounted on the two slide rails (24).

4. The injection mold capable of automatically stripping materials as claimed in claim 1, wherein a guide rod (41) is fixedly connected between the top end inner wall and the bottom end inner wall of the rectangular opening, a guide sleeve (43) is fixedly installed on the lifting plate (42), and the guide sleeve (43) is slidably installed outside the guide rod (41).

5. The injection mold capable of automatically stripping materials as claimed in claim 1, wherein the top end of the extrusion block (45) is provided with a matching groove (46), and the matching groove (46) is matched with the push rod (10).

6. The injection mold capable of automatically stripping materials as claimed in claim 1, wherein guide plates (6) are fixedly connected to both sides of the upper mold (5), guide holes (7) are formed in the guide plates (6), and the support rod (2) penetrates through the guide plates (6) through the guide holes (7).

7. The injection mold capable of automatically stripping materials as claimed in claim 1, wherein four corners of the top end of the lower mold (8) are fixedly connected with positioning rods (9), positioning grooves are formed in the positions, corresponding to the positioning rods (9), of the bottom end of the upper mold (5), and the top ends of the positioning rods (9) extend into the positioning grooves.

8. The injection mold capable of automatically stripping materials as claimed in claim 1, wherein a first push rod motor (11) is fixedly installed on one side, away from the extrusion block (45), of the lower mold (8), a fourth rack (13) is fixedly connected with an output shaft of the first push rod motor (11), a cylinder (12) is rotatably installed at the top end of the supporting base (1), a fourth gear (14) is fixedly connected to the outer side of the cylinder (12), the fourth gear (14) is meshed with the fourth rack (13), a third installation cavity (15) is formed in the cylinder (12), a second push rod motor (16) is fixedly connected to the inner wall of the top end and the inner wall of the bottom end of the third installation cavity (15), a connecting rod (17) is fixedly connected to the output shaft of the second push rod motor (16), a sliding opening (18) is formed in the outer side of the cylinder (12), one end of the connecting rod (17) extends to the outer portion of the cylinder (12) through the sliding opening (18) and is fixedly connected with a locking clamping plate (19 And one sides of the upper die (5) and the lower die (8) close to the cylinder (12) are fixedly connected with locking blocks (47).

9. The injection mold capable of automatically stripping materials as claimed in claim 8, characterized in that the two locking blocks (47) are provided with locking grooves on the sides far away from each other, the locking clamp plates (19) are fixedly connected with locking protrusions (20) on the sides near to each other, and the locking protrusions (20) are matched with the locking grooves.