Demolding device of bottle cap injection molding machine and bottle cap collecting device

Abstract

The invention discloses a demoulding device of a bottle cap injection molding machine and a bottle cap collecting device, which effectively increases the function of adapting to the low-power operation of the injection molding machine, and comprises molding mechanisms, the upper and lower sides of each molding mechanism are respectively provided with a clamping block assembly and a clamping groove assembly; the left side and the right side of each forming mechanism are provided with a sliding block assembly and a sliding groove assembly correspondingly. Each forming mechanism comprises a rear mold core and a front mold core, a cavity is formed in the rear side of the front mold core, a rotatable mold core is arranged in the middle of the rear mold core, a power plate is arranged on the rear side of the rear mold core, and a pop-up mechanism is arranged on the front side of the inner wall of the cavity. According to the bottle cap demolding device, modular design is effectively added, disassembly and assembly are convenient, demolding of the bottle cap is smoother, a thread structure in the bottle cap is more complete, demolding of the bottle cap and the front mold core is facilitated, the effect of automatic demolding is achieved, and the purpose of better collecting the bottle cap is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of bottle cap molding, and relates to a demoulding device of a bottle cap injection molding machine and a bottle cap collecting device. Background Art

[0002] Plastic bottles are widely used packaging containers in modern life, and the plastic bottle caps they are used with are an indispensable part, so there is a huge demand for them. The development of modern production technology has gradually reduced the volume and wall thickness of plastic bottle caps as the industry technology continues to improve, and they have also become a plastic product that combines practicality and aesthetics.

[0003] The molding cycle of a plastic bottle cap includes the following stages: mold closing - injection - molding - cooling - mold opening - demoulding and ejection. After traditional injection molding, the bottle cap is demoulded by pushing the bottle cap with the spring inside the mold, so that the bottle cap is separated from the core mold under the action of the spring elastic force;

[0004] When the injection molding machine is producing multiple molds at the same time, the production efficiency can be greatly improved. However, the injection pressure of the injection molding machine is also relatively large. When the pressure system of the injection molding machine is used for too long under high pressure, it needs to be repaired and the injection pressure is reduced to increase the overall life. At this time, the injection molding can only be stopped under the traditional demolding mold, which seriously affects the production efficiency. Therefore, a modular design is needed to solve the above problems with the demolding device and bottle cap collection device of the bottle cap injection molding machine that can conveniently adjust the number of injection molds. Summary of the invention

[0005] In view of the above problems, the present invention proposes a demoulding device and a bottle cap collecting device for a bottle cap injection molding machine, which well solve the problems in the prior art.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A demoulding device for a bottle cap injection molding machine, characterized in that it comprises at least four forming mechanisms arranged in a field shape, wherein a clamping block assembly and a clamping slot assembly are respectively arranged on the upper and lower sides of each forming mechanism, so that two adjacent forming mechanisms above and below can be connected and matched, and a slider assembly and a slide slot assembly are respectively arranged on the left and right sides of each forming mechanism, so that two adjacent forming mechanisms on the left and right can be connected and matched;

[0008] Each of the forming mechanisms includes a rear mold core and a front mold core that can move forward and backward relative to the rear mold core. A mold cavity is provided on the rear side of the front mold core, a rotatable core is provided in the middle of the rear mold core, a power plate that can move left and right is slidably connected to the rear side of the rear mold core, and an ejection mechanism for ejecting a workpiece is provided on the front side of the inner wall of the mold cavity.

[0009] Preferably, the rear side of the rear mold core is rotatably connected to a large gear, and a plurality of small gears are meshed on the outer side of the large gear. The front side of each small gear is fixedly connected to a power screw, the middle part of each power screw is rotatably connected to the rear mold core, and the front side of each power screw is threadedly connected to the front mold core. The rotation of the large gear forms a structure for the front mold core to move forward and backward.

[0010] Preferably, a rack is fixedly connected to the upper part of the front side of the power plate, and the lower side of the rack is meshed with a driving gear rotatably connected to the rear mold core, and the lower side of the driving gear is meshed with the large gear. The power plate moves left and right to form a structure in which the large gear rotates, and the middle part of the large gear is fixedly connected to the rear side of the core.

[0011] Preferably, the pop-up mechanism includes a first pop-up plate and a second pop-up plate, an pop-up groove is opened on the front side of the cavity, and a limiting card plate is fixedly connected to the left and right sides of the inside of the pop-up groove respectively, the second pop-up plate and the first pop-up plate are respectively located on the front and rear sides of the limiting card plate, and a spring is arranged between the first pop-up plate and the second pop-up plate.

[0012] Preferably, a pop-up frame is provided on the front side of the front mold core, and two rotating rods are fixedly connected to the rear side of the pop-up frame, each rotating rod is rotatably connected to the corresponding power screw, and a plurality of pop-up rods adapted to the second pop-up plate are fixedly connected to the rear side of the pop-up frame.

[0013] Preferably, the clamping block assembly comprises a first clamping block and a second clamping block, wherein the first clamping block is fixedly connected to the lower side of the power plate, and the second clamping block is fixedly connected to the lower side of the rear mold core;

[0014] The slot assembly includes a first slot and a second slot, the first slot is opened on the upper side of the power board, the first slot penetrates the power board from front to back, and the second slot is opened on the upper side of the rear mold.

[0015] Preferably, the slider assembly includes three vertical sliders, and the three vertical sliders are respectively fixedly connected to the left sides of the power plate, the rear mold core and the front mold core;

[0016] The slide groove assembly includes three vertical slide grooves adapted to the vertical sliding block, and the three vertical slide grooves are respectively arranged on the right side of the power plate, the rear mold core and the front mold core.

[0017] In addition, the present invention also discloses a bottle cap collecting device, including a connecting component, a collecting component and a conveying component. The connecting component is used to limit the front mold core, the rear mold core and the moving plate. The collecting component includes two collecting plates fixedly connected to the lower side of the connecting component. The conveying component includes a conveyor belt and a transmission shaft.

[0018] Preferably, the connecting assembly includes a transverse guide rail and two longitudinal guide rails, the two longitudinal guide rails are fixedly connected to both sides of the transverse guide rail, a T-slot is opened on the upper side of the transverse guide rail, a long slot is opened on the upper side of the longitudinal guide rail, and the front mold core is slidably connected to the long slot.

[0019] Preferably, the conveyor belt is arranged to tilt forward, and a plurality of grooves adapted to the workpieces are provided on the conveyor belt. Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention has at least four molding mechanisms arranged in a field shape, and multiple molding mechanisms can be further extended and connected to the left and right and upward on the basis of the field shape, so that the pressure of the injection molding machine can be maximized. When the injection molding pressure of the injection molding machine fails and the pressure is insufficient, a certain number of molding mechanisms can be removed by manual operation. At this time, the injection molding machine can be operated in a low-power and low-pressure state, and further maintenance can be carried out after the maintenance personnel arrive, thereby improving the injection molding production efficiency of the bottle cap.

[0021] 2. The present invention has a block assembly and a slot assembly. Different molding mechanisms are connected in the up and down directions through the block assembly and the slot assembly, and are connected in the left and right directions through the slider assembly and the slide slot assembly, so that the adjacent front mold core, rear mold core, and power plate are relatively fixed, which is convenient for the staff to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the explosion structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the position of the ejection mechanism in the present invention.

[0025] Figure 4 For the present invention Figure 1 A partial enlarged schematic diagram of area A in the middle.

[0026] Figure 5 For the present invention Figure 1 A partial enlarged schematic diagram of area B in the middle.

[0027] Figure 6 For the present invention Figure 3 A partial enlarged schematic diagram of the C area in the middle.

[0028] Figure 7 For the present invention Figure 2 A partial enlarged schematic diagram of the D area in the middle.

[0029] In the figure: 1, block assembly; 2, slot assembly; 3, slider assembly; 4, slide assembly; 5, rear mold core; 6, front mold core; 7, cavity; 8, core; 9, power plate; 10, ejection mechanism; 11, large gear; 12, small gear; 13, power screw; 14, rack; 15, driving gear; 16, first ejection plate; 17, second ejection plate; 18, ejection slot; 19, limit card plate; 20, spring; 21, spring Out of the rack; 22. Rotating rod; 23. Pop-up rod; 24. First clamping block; 25. Second clamping block; 26. First clamping slot; 27. Second clamping slot; 28. Vertical slider; 29. ​​Vertical slide slot; 30. Connecting assembly; 31. Collecting assembly; 32. Conveying assembly; 33. Collecting plate; 34. Conveying belt; 35. Drive shaft; 36. Horizontal guide rail; 37. Longitudinal guide rail; 38. T-slot; 39. Long clamping slot; 40. Groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The following is combined with Figure 1 - Figure 7 The specific implementation modes of the present invention are described in further detail.

[0032] Depend on Figure 1 - Figure 7 A demoulding device of a bottle cap injection molding machine is provided, which comprises at least four forming mechanisms arranged in a field shape in order to adapt to the low-power operation of the injection molding machine. A card block assembly 1 and a card slot assembly 2 are respectively arranged on the upper and lower sides of each forming mechanism, so that two adjacent forming mechanisms above and below can be connected and matched. A slider assembly 3 and a slide slot assembly 4 are respectively arranged on the left and right sides of each forming mechanism, so that two adjacent forming mechanisms on the left and right can be connected and matched.

[0033] Each of the molding mechanisms comprises a rear mold core 5 and a front mold core 6 that can move forward and backward relative to the rear mold core 5, a mold cavity 7 is provided on the rear side of the front mold core 6, a rotatable mold core 8 is provided in the middle of the rear mold core 5, a power plate 9 that can move left and right is slidably connected to the rear side of the rear mold core 5, and an ejection mechanism 10 for ejecting a workpiece is provided on the front side of the inner wall of the mold cavity 7;

[0034] It should be noted that multiple molding mechanisms can be further extended and connected to the left and right and upward on the basis of the field shape, so that the pressure of the injection molding machine can be maximized. When the injection molding pressure of the injection molding machine fails and the pressure is insufficient, a certain number of molding mechanisms can be removed manually. At this time, the injection molding machine can be operated in a low-power and low-pressure state, and further maintenance can be performed after the maintenance personnel arrive, thereby improving the injection molding production efficiency of the bottle cap. Each of the front mold cores 6 is provided with a threaded groove running through the upper and lower parts, and the two front mold cores 6 in contact with each other can be relatively fixed by the threaded groove and the bolts;

[0035] When in use, different forming mechanisms are connected in the up-down direction through the block assembly 1 and the slot assembly 2, and in the left-right direction through the slider assembly 3 and the slide slot assembly 4, so that the adjacent front mold core 6, rear mold core 5, and power plate 9 are relatively fixed. After the connection, the front mold core 6, rear mold core 5, and power plate 9 that are not tightly fixed can be reinforced by bolts.

[0036] Furthermore, in order to make the bottle cap demoulding smoother, the rear side of the rear mold core 5 is rotatably connected to a large gear 11, and a plurality of small gears 12 are meshed on the outer side of the large gear 11. The front side of each small gear 12 is fixedly connected to a power screw 13, and the middle part of each power screw 13 is rotatably connected to the rear mold core 5, and the front side of each power screw 13 is threadedly connected to the front mold core 6. The large gear 11 rotates to form a structure in which the front mold core 6 moves forward and backward;

[0037] Further, in order to make the thread structure inside the bottle cap more complete, a rack 14 is fixedly connected to the upper part of the front side of the power plate 9, and a driving gear 15 rotatably connected to the rear mold core 5 is meshed on the lower side of the rack 14. The lower side of the driving gear 15 is meshed with the large gear 11. The power plate 9 moves left and right to form a structure in which the large gear 11 rotates, and the middle part of the large gear 11 is fixedly connected to the rear side of the core 8.

[0038] It should be noted that the bottle cap is provided with a thread inside, so a thread groove 40 is also correspondingly provided on the outer side of the middle part of the core 8, and the ratio of the pitch of the thread groove 40 and the pitch of the power screw 13 is adapted to the transmission ratio of the large gear 11 and the small gear 12, so that the bottle cap and the front mold core 6 move forward at the same speed relative to the rear mold core 5;

[0039] When in use, the power plate 9 can be moved to the right, and the rack 14 drives the driving gear 15 to rotate. The driving gear 15 drives each small gear 12 to rotate through the large gear 11, so that each power screw 13 rotates relative to the rear mold core 5. Since each power screw 13 is threadedly connected to the front mold core 6, it will push the front mold core 6 to move forward relative to the rear mold core 5. In this process, the large gear 11 will also drive the core 8 to rotate, thereby pushing the bottle cap forward through the threaded groove 40, so that the bottle cap as a whole can be demoulded from the rear mold core 5 and the core 8.

[0040] Further, in order to facilitate demoulding of the bottle cap and the front mold core 6, the ejection mechanism 10 includes a first ejection plate 16 and a second ejection plate 17. An ejection groove 18 is provided on the front side of the cavity 7. A limit card plate 19 is fixedly connected to the left and right sides of the inside of the ejection groove 18. The second ejection plate 17 and the first ejection plate 16 are respectively located at the front and rear sides of the limit card plate 19. A spring 20 is provided between the first ejection plate 16 and the second ejection plate 17.

[0041] Further, in order to achieve the effect of automatic demoulding, an ejection rack 21 is provided on the front side of the front mold core 6, and two rotating rods 22 are fixedly connected to the rear side of the ejection rack 21, each rotating rod 22 is rotatably connected to the corresponding power screw 13, and a plurality of ejection rods 23 adapted to the second ejection plate 17 are fixedly connected to the rear side of the ejection rack 21;

[0042] It should be noted that, in order to form a groove 40 on the upper side of the bottle cap, a protrusion is provided inside the cavity 7, and the protrusion serves as a limit for the bottle cap during demoulding;

[0043] When in use, as the front mold core 6 moves forward, the second pop-up plate 17 will get closer and closer to each pop-up rod 23. When the bottle cap is completely disengaged from the core 8, the pop-up rod 23 will contact the second pop-up plate 17. As the front mold core 6 moves forward further, the second pop-up plate 17 will store force in the spring 20 under the blocking action of the pop-up rod 23. As the front mold core 6 moves forward further, the force exerted on the bottle cap by the second pop-up plate 17, the spring 20 and the first pop-up plate 16 is greater than the limiting friction force of the bottle cap inside the cavity 7. Then, the bottle cap will pop out of the cavity 7 under the action of the spring 20, completing demoulding.

[0044] It should be further explained that a magnet is provided between the second pop-up plate 17 and the pop-up rod 23 so that the two are magnetically connected. When the front mold core 6 moves backward to reset, the second pop-up plate 17, the spring 20 and the first pop-up plate 16 can be pulled to reset by the magnetic force.

[0045] Furthermore, the clamping block assembly 1 includes a first clamping block 24 and a second clamping block 25, wherein the first clamping block 24 is fixedly connected to the lower side of the power plate 9, and the second clamping block 25 is fixedly connected to the lower side of the rear mold core 5;

[0046] The slot assembly 2 includes a first slot 26 and a second slot 27. The first slot 26 is provided on the upper side of the power plate 9. The first slot 26 penetrates the power plate 9 from front to back. The second slot 27 is provided on the upper side of the rear mold core 5.

[0047] The first block 24, the second block 25, the first slot 26, and the second slot 27 are all arranged in a staggered manner, that is, when the power plate 9 is at the rightmost limit position (this position is not in the maximum action of the demoulding action), the second block 25 is located just in front of the first block 24, and the second slot 27 is located just in front of the first slot 26;

[0048] It should be noted that the power plate 9 is slidably connected to the rear mold core 5 via a transverse guide rail 36;

[0049] When in use, the power plate 9 can be moved to the rightmost extreme position, at which time the two different molding mechanisms can be connected up and down, so that the first card block 24 and the second card block 25 of the upper molding mechanism are inserted into the first card slot 26 and the second card slot 27 of the lower molding mechanism. During normal demolding, the rear side of the second card block 25 is always in contact with the front side of the power plate 9 for limiting.

[0050] Furthermore, in order to facilitate the disassembly and assembly of different molding mechanisms, the slider assembly 3 includes three vertical sliders 28, and the three vertical sliders 28 are respectively fixedly connected to the left sides of the power plate 9, the rear mold core 5 and the front mold core 6;

[0051] The slide assembly 4 includes three vertical slides 29 adapted to the vertical slider 28, and the three vertical slides 29 are respectively opened on the right side of the power plate 9, the rear mold core 5 and the front mold core 6;

[0052] When in use, the vertical slider 28 and the vertical slide groove 29 cooperate with each other to enable two adjacent forming mechanisms on the left and right to be fixedly connected.

[0053] A bottle cap collecting device, comprising Figure 1 and Figure 4 In order to facilitate the fixing of the forming mechanism, a connecting assembly 30, a collecting assembly 31 and a conveying assembly 32 are provided. The connecting assembly 30 is used to limit the front mold core 6, the rear mold core 5 and the moving plate. The collecting assembly 31 includes two collecting plates 33 fixedly connected to the lower side of the connecting assembly 30. The conveying assembly 32 includes a conveyor belt 34 and a transmission shaft 35.

[0054] During use, when the forming mechanism needs to be disassembled, it can be connected and disassembled through the connecting assembly 30. The bottle caps ejected by the spring 20 can be completely collected through the collecting plate 33. The conveyor belt 34 is driven by the transmission shaft 35. The transmission shaft 35 is connected to a servo motor as a power input, which drives the conveyor belt 34 to rotate and transport the bottle caps.

[0055] Further, the connecting assembly 30 includes a transverse guide rail 36 and two longitudinal guide rails 37, the two longitudinal guide rails 37 are fixedly connected to the two sides of the transverse guide rail 36, a T-shaped slot 38 is opened on the upper side of the transverse guide rail 36, and a long card slot 39 is opened on the upper side of the longitudinal guide rail 37, and the front mold core 6 is slidably connected to the long card slot 39;

[0056] When in use, the design of the T-slot 38 is the same as the first slot 26. The power plate 9 can only enter the T-slot 38 when it is located at the far right. The T-slot 38 is used to limit the power plate 9 during normal demolding. The long slot 39 can make the forward and backward movement of the front mold core 6 smoother.

[0057] Furthermore, in order to better collect the bottle caps, the conveyor belt 34 is arranged to be tilted forward, and a plurality of grooves 40 adapted to the workpieces are formed on the conveyor belt 34 .

[0058] When the present invention is used, firstly, different molding mechanisms are connected in the up-down direction by the block assembly 1 and the slot assembly 2, and are connected in the left-right direction by the slider assembly 3 and the slide slot assembly 4, so that the adjacent front mold core 6, rear mold core 5, and power plate 9 are relatively fixed. After the connection, the front mold core 6, rear mold core 5, and power plate 9 that are not tightly fixed can be reinforced by bolts. When demoulding, the power plate 9 can be connected to the cylinder or the screw motor to move to the right. At this time, the rack 14 drives the active gear 15 to rotate, and the active gear 15 drives each small gear 12 to rotate through the large gear 11, thereby making each power screw 13 rotate relative to the rear mold core 5. Since each power screw 13 is threadedly connected to the front mold core 6, it will push the front mold core 6 to move forward relative to the rear mold core 5. In this process, the large gear 11 will also drive the core 8 to rotate, thereby pushing the bottle cap to the front mold core 6 through the threaded groove 40. When the bottle cap is completely disengaged from the core 8, the second pop-up plate 17 will come into contact with the second pop-up plate 17. As the front mold core 6 moves forward further, the second pop-up plate 17 will store force in the spring 20 under the blocking action of the pop-up rod 23. As the front mold core 6 moves forward further, the force exerted on the bottle cap by the second pop-up plate 17, the spring 20 and the first pop-up plate 16 is greater than the limiting friction force of the bottle cap inside the cavity 7. Then, the bottle cap will pop out of the cavity 7 under the action of the spring 20 to complete the demoulding. The bottle caps ejected by the spring 20 can be completely collected by the collecting plate 33. The conveyor belt 34 is driven by the transmission shaft 35. The transmission shaft 35 is connected to a servo motor as a power input to drive the conveyor belt 34 to rotate and transport the bottle caps.

[0059] The present invention has a novel structure, ingenious conception, and simple and convenient operation. The present invention effectively increases the function of being able to adapt to the low-power operation of the injection molding machine, increases the modular design, and facilitates disassembly and assembly, making the bottle cap demoulding smoother, making the threaded structure inside the bottle cap more complete, facilitating the demoulding of the bottle cap and the front mold core 6, achieving the effect of automatic demoulding, and achieving the purpose of better collecting the bottle caps.

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A demoulding device for a bottle cap injection molding machine, characterized in that: The invention comprises at least four forming mechanisms arranged in a field shape, wherein a block assembly (1) and a slot assembly (2) are respectively arranged on the upper and lower sides of each forming mechanism, so that two adjacent forming mechanisms above and below can be connected and matched, and a slider assembly (3) and a slide slot assembly (4) are respectively arranged on the left and right sides of each forming mechanism, so that two adjacent forming mechanisms on the left and right can be connected and matched; Each of the molding mechanisms comprises a rear mold core (5) and a front mold core (6) which can move forward and backward relative to the rear mold core (5); a mold cavity (7) is provided on the rear side of the front mold core (6); a rotatable mold core (8) is provided in the middle of the rear mold core (5); a power plate (9) which can move left and right is slidably connected to the rear side of the rear mold core (5); and an ejection mechanism (10) for ejecting a workpiece is provided on the front side of the inner wall of the mold cavity (7).

2. The demoulding device of a bottle cap injection molding machine according to claim 1, characterized in that: The rear side of the rear mold core (5) is rotatably connected to a large gear (11), and the outer side of the large gear (11) is meshed with a plurality of small gears (12), and the front side of each small gear (12) is fixedly connected to a power screw (13), and the middle part of each power screw (13) is rotatably connected to the rear mold core (5), and the front side of each power screw (13) is threadedly connected to the front mold core (6), and the rotation of the large gear (11) forms a structure in which the front mold core (6) moves forward and backward.

3. The demoulding device of the bottle cap injection molding machine according to claim 2, characterized in that: A rack (14) is fixedly connected to the upper part of the front side of the power plate (9), and a driving gear (15) is meshed with the lower side of the rack (14) and is rotatably connected to the rear mold core (5). The lower side of the driving gear (15) is meshed with the large gear (11). The power plate (9) moves left and right to form a structure in which the large gear (11) rotates, and the middle part of the large gear (11) is fixedly connected to the rear side of the core (8).

4. The demoulding device of the bottle cap injection molding machine according to claim 2, characterized in that: The ejection mechanism (10) comprises a first ejection plate (16) and a second ejection plate (17); an ejection slot (18) is provided on the front side of the mold cavity (7); a limit clamping plate (19) is fixedly connected to the left and right sides of the ejection slot (18); the second ejection plate (17) and the first ejection plate (16) are respectively located on the front and rear sides of the limit clamping plate (19); and a spring (20) is provided between the first ejection plate (16) and the second ejection plate (17).

5. The demoulding device of the bottle cap injection molding machine according to claim 4, characterized in that: A pop-up frame (21) is arranged at the front side of the front mold core (6); two rotating rods (22) are fixedly connected to the rear side of the pop-up frame (21); each rotating rod (22) is rotationally connected to a corresponding power screw rod (13); and a plurality of pop-up rods (23) adapted to the second pop-up plate (17) are fixedly connected to the rear side of the pop-up frame (21).

6. The demoulding device of a bottle cap injection molding machine according to claim 1, characterized in that: The clamping block assembly (1) comprises a first clamping block (24) and a second clamping block (25), wherein the first clamping block (24) is fixedly connected to the lower side of the power plate (9), and the second clamping block (25) is fixedly connected to the lower side of the rear mold core (5); The slot assembly (2) comprises a first slot (26) and a second slot (27); the first slot (26) is arranged on the upper side of the power plate (9); the first slot (26) penetrates the power plate (9) from front to back; and the second slot (27) is arranged on the upper side of the rear mold core (5).

7. The demoulding device of a bottle cap injection molding machine according to claim 1, characterized in that: The slider assembly (3) comprises three vertical sliders (28), and the three vertical sliders (28) are respectively fixedly connected to the left sides of the power plate (9), the rear mold core (5) and the front mold core (6); The slide groove assembly (4) comprises three vertical slide grooves (29) adapted to the vertical slider (28), and the three vertical slide grooves (29) are respectively arranged on the right side of the power plate (9), the rear mold core (5) and the front mold core (6).

8. A bottle cap collecting device, used for a demoulding device of a bottle cap injection molding machine according to any one of claims 1 to 7, characterized in that: The invention comprises a connecting component (30), a collecting component (31) and a conveying component (32); the connecting component (30) is used for limiting the front mold core (6), the rear mold core (5) and the moving plate; the collecting component (31) comprises two collecting plates (33) fixedly connected to the lower side of the connecting component (30); and the conveying component (32) comprises a conveying belt (34) and a transmission shaft (35).

9. The bottle cap collecting device according to claim 8, characterized in that: The connecting assembly (30) comprises a transverse guide rail (36) and two longitudinal guide rails (37); the two longitudinal guide rails (37) are fixedly connected to the two sides of the transverse guide rail (36); a T-shaped groove (38) is provided on the upper side of the transverse guide rail (36); a long card groove (39) is provided on the upper side of the longitudinal guide rail (37); and the front mold core (6) is slidably connected to the long card groove (39).

10. The bottle cap collection device according to claim 8, characterized in that: The conveyor belt (34) is arranged to tilt forward, and a plurality of grooves (40) adapted to the workpieces are provided on the conveyor belt (34).

Images