Injection mold and injection molding method for producing high-strength handles

Abstract

The present invention discloses an injection mold and an injection molding method for producing high-strength handles, comprising a female mold shell and a male mold shell, wherein a female mold core is fixedly provided on one side of the female mold shell close to the male mold shell, and a male mold core is fixedly provided on one side of the male mold shell close to the female mold shell; an accommodation space is provided inside the female mold shell, and a movable mold core is slidably provided in the accommodation space, and a positioning mold core is fixedly provided on one side of the movable mold core. When the mold is in a closed state, the rotating shaft is pushed to a specified position by a movable plate, and the posture of the rotating shaft is corrected in this process, thereby ensuring the production accuracy of the handle and improving the production efficiency of the handle; by changing the state of the movable mold core, a reinforcement block integrally connected to the rotating shaft is first injection molded, and then a curved thin plate with one side covering the reinforcement block is obtained by secondary injection molding, which is fastened with a flat back plate to obtain a handle with low overall mass and high strength at the rotating shaft connection.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding, and particularly relates to an injection mold and an injection molding method for producing high-strength handles. Background Art

[0002] Plastic handles are made of synthetic resin and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. They are widely used on a variety of products. Injection molding is a common production method for handles. However, most existing handles are fixed at both ends. While retractable, they take up a lot of space, and the shaft connecting them to the product must be limited to a length that makes it difficult to install the handle. This significantly limits the quality of the products that the handles can be used with. While handles fixed at one end can use a longer shaft, this reduces their strength. During use, the joint between the shaft and the handle is prone to tearing and deformation, seriously affecting the product's lifespan. Summary of the Invention

[0003] In order to solve the above problems existing in the prior art, the present invention aims to provide an injection mold and an injection molding method for producing high-strength handles.

[0004] The technical solution adopted in the present invention is:

[0005] The cam is fixed with a female mold core on one side of the female mold core, and the male mold core is fixed with a male mold core on one side of the male mold core; the female mold core is provided with a placement space inside the female mold core, a movable mold core is slidably provided in the placement space, and a counter mold core is fixedly provided on one side of the movable mold core, a placement groove is fixedly provided on the female mold core, the placement groove is located on one side of the female mold core, a rotating shaft is placed in the placement groove, one end of the rotating shaft is communicated with the counter mold core, and the counter mold core and the movable mold core are connected to the female mold core; a reserved groove is fixedly provided on the male mold shell, the reserved groove is located on one side of the male mold core, an insertion hole is fixedly provided in the male mold shell, one end of the insertion hole is communicated with the reserved groove, and the other end of the insertion hole passes through the male mold shell, and the insertion hole passes through one end of the male mold shell and is provided with a placement groove.

[0006] As a preferred embodiment of the present invention, the male mold core is provided with a plurality of injection holes, and an injection head is installed in the injection hole, and the injection head passes through the male mold shell; the female mold shell and the male mold shell are provided with a plurality of one-to-one corresponding injection grooves, the injection grooves on the female mold shell are connected to the male mold core, and the injection grooves on the male mold shell are connected to the female mold core, and the injection grooves on the female mold shell and the injection grooves on the male mold shell cooperate to form a cylindrical channel.

[0007] As a preferred embodiment of the present invention, a control motor is fixedly provided on an inner wall of one side of the placement space, a screw is fixedly provided on the output shaft of the control motor, a threaded block is fitted on the screw thread, a control electric cylinder is provided on the side of the threaded block close to the female mold core, the cylinder barrel of the control electric cylinder is fixedly connected to the threaded block, and the piston rod of the control electric cylinder is fixedly connected to the movable mold core; a sliding space located inside the female mold shell is provided on the side of the positioning mold core away from the movable mold core, and the positioning mold core is slidably connected to the sliding space.

[0008] As a preferred embodiment of the present invention, a molding space is fixedly provided on the side of the movable mold core away from the positioning mold core, and a protrusion is fixedly provided on the inner wall of the molding space close to the threaded block; a reinforcement mold core is fixed on the male mold core, and the reinforcement mold core is adapted to the protrusion.

[0009] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0010] As a preferred embodiment of the present invention, a limiting hole is fixedly provided on the mother mold shell, and the limiting hole is located on one side of the placement space. A limiting column is slidingly provided in the mother mold shell, and the limiting column is connected to the placement groove. A limiting spring is fixedly provided at one end of the limiting column away from the placement groove, and a fixing block is fixedly provided at one end of the limiting spring away from the limiting column, and the fixing block is fixedly connected to the mother mold shell.

[0011] As a preferred embodiment of the present invention, a positioning hole is fixedly provided on the rotating shaft, and the positioning hole cooperates with the limiting column.

[0012] As a preferred embodiment of the present invention, the placement slot is fixedly arranged on the telescopic rod, and the end of the telescopic rod away from the placement slot is fixedly arranged on the support plate, and a side plate is fixedly provided at each end of the support plate, and the side plate is fixedly connected to the male mold shell; a correction motor is fixedly provided on the side of the movable plate away from the placement slot, and the output shaft of the correction motor passes through the movable plate, and the output shaft of the correction motor is rotatably connected to the movable plate through a bearing, and a rotating shaft is fixedly provided on the output shaft of the correction motor, and a friction bead is fixedly provided on the end of the rotating shaft away from the movable plate.

[0013] As a preferred embodiment of the present invention, a guide block is fixedly provided at one end of the movable plate away from the correction motor, a transition slope is provided at one end of the placement groove close to the movable plate, and a transition slope is provided at one end of the movable plate close to the movable plate; a positioning groove is fixedly provided on one side of the male mold shell close to the movable plate, the positioning groove is connected with the end of the insertion hole close to the movable plate, and the positioning groove is adapted to the guide block.

[0014] An injection molding method for producing a high-strength handle comprises the following steps:

[0015] S1. Close the mold; snap the female mold shell and the male mold shell together;

[0016] S2. Install the rotating shaft; place the rotating shaft on the placement slot, start the hydraulic cylinder and the correction motor in sequence; the rotating shaft pushes the rotating shaft through the insertion hole to the reserved slot, the pressure block moves to push the rotating shaft into the placement slot, and the hydraulic cylinder is stopped. During this process, the rotating shaft squeezes the limit column, the limit spring is compressed, and then the rotating shaft rotates and drives the rotating shaft to rotate through the friction ball. After the rotating shaft rotates until the positioning hole is aligned with the limit column, the limit spring resets and the correction motor stops;

[0017] S3, adjust the position of the movable mold core; control the motor to start, control the thread block to move along the screw, and stop after the molding space is aligned with the reinforcement mold core;

[0018] S4, first injection molding; injecting liquid into the molding space through an injection head closest to the reinforcement mold core to obtain a reinforcement block fixed to the shaft;

[0019] S5, reset the moving mold core; start the control electric cylinder and thread block in sequence, and move the mold core away from the reinforcement block;

[0020] S6, second injection molding; injecting into the mold cavity surrounded by the female mold core and the male mold core through other injection heads away from the reinforcement mold core, obtaining a curved thin plate and a flat back plate connected together by the nozzle material, wherein the curved thin plate and the reinforcement block are fixed integrally;

[0021] S7. Open the mold and assemble; buckle the flat back panel and the curved thin plate to obtain a high-strength handle.

[0022] The beneficial effects of the present invention are as follows: as an injection mold and injection molding method for producing high-strength handles, the present invention pushes the rotating shaft to a specified position through a moving plate in a mold closing state, and corrects the posture of the rotating shaft in this process, thereby ensuring the production accuracy of the handle while improving the efficiency of the handle production; by changing the state of the moving mold core, a reinforcement block integrally connected to the rotating shaft is first injection molded, and then a curved thin plate with one side covering the reinforcement block is obtained through secondary injection molding, which is fastened to the flat back plate to obtain a handle with a small overall mass and high strength at the rotating shaft connection, which has a beautiful appearance and low production cost; a rotating shaft with a single-side connection and a long length is used, which not only improves the service life of the handle, but also facilitates installation; according to the different functions of the reinforcement block and the curved thin plate, the materials of the reinforcement block and the curved thin plate can be reasonably matched, which can further reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 This invention Figure 1 A schematic diagram of the front structure of FIG.

[0026] Figure 3 This invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0027] Figure 4 This invention Figure 1 Schematic diagram of the top view structure;

[0028] Figure 5 This invention Figure 4 BB direction structural diagram;

[0029] Figure 6 This invention Figure 1 Schematic diagram of the mold closing state structure;

[0030] Figure 7 This invention Figure 5 Schematic diagram of the mold closing state structure;

[0031] Figure 8 This invention Figure 1 Schematic diagram of the mother mold shell structure;

[0032] Figure 9 This invention Figure 1 Schematic diagram of the male mold shell structure;

[0033] Figure 10 This invention Figure 1 Schematic diagram of the movable mold structure;

[0034] Figure 11 This invention Figure 1 Schematic diagram of the structure of the pressing block and its connecting components;

[0035] Figure 12 This invention Figure 1 A schematic diagram of a high-strength handle structure (simplified diagram). DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0038] The following combination Figure 1-12The specific embodiment of the present invention is described. An injection mold for producing a high-strength handle includes a female mold shell 11 and a male mold shell 12. The female mold shell 11 is fixedly provided with a female mold core 42 on one side close to the male mold shell 12, and the male mold shell 12 is fixedly provided with a male mold core 43 on one side close to the female mold shell 11; a placement space 44 is provided inside the female mold shell 11, and a movable mold core 45 is slidably provided in the placement space 44. A positioning mold core 41 is fixedly provided on one side of the movable mold core 45, and a placement groove 38 is fixed on the female mold shell 11. The placement groove 38 is located at the female mold core 42. On one side, a rotating shaft 39 is placed in the placement groove 38, one end of the rotating shaft 39 is connected to the alignment mold core 41, and the alignment mold core 41 and the movable mold core 45 are connected to the female mold core 42; a reserved groove 33 is fixedly provided on the male mold shell 12, and the reserved groove 33 is located on one side of the male mold core 43, and an insertion hole 34 is fixedly provided in the male mold shell 12, one end of the insertion hole 34 is connected to the reserved groove 33, and the other end of the insertion hole 34 passes through the male mold shell 12, and the insertion hole 34 passes through one end of the male mold shell 12 and is provided with a placement groove 26. By placing the rotating shaft 39 in the placement groove 26, 39 can be moved to the placement groove 38. This operation can be performed when the female mold shell 11 and the male mold shell 12 are in the mold closing state, and there is no need to manually place the rotating shaft 39, which improves the accuracy of the handle production; the two states of the movable mold core 45 will injection mold different products. By moving the movable mold core 45, a reinforcement block integrally connected to the rotating shaft 39 is first injection molded, and then a curved thin plate 58 with a reinforcing block wrapped on one side is obtained through secondary injection molding. The flat back plate 59 is obtained at the same time by the secondary injection molding. After the curved thin plate 58 and the flat back plate 59 are buckled together, the reinforcement block is located between the two. The overall hollow structure of the handle has a beautiful appearance and light weight. The connection position between the reinforcement block and the rotating shaft 39 is a solid structure, which effectively improves the strength of the handle; the use of a single-sided large-length rotating shaft 39 not only improves the service life but also facilitates installation.

[0039] Advantageously, the male mold core 43 is provided with a plurality of injection holes 53, and an injection head 14 is installed in the injection hole 53, and the injection head 14 passes through the male mold shell 12; the female mold shell 11 and the male mold shell 12 are provided with a plurality of one-to-one corresponding injection grooves 37, the injection grooves 37 on the female mold shell 11 are connected to the male mold core 43, and the injection grooves 37 on the male mold shell 12 are connected to the female mold core 42, and the injection grooves 37 on the female mold shell 11 and the injection grooves 37 on the male mold shell 12 cooperate to form a cylindrical channel. The mold cavity formed by the male mold core 43 and the female mold core 42 is divided into two parts, corresponding to the arc-shaped thin plate 58 and the flat back plate 59 respectively, and the two parts are connected through the injection groove 37; during injection, the plastic liquid first flows into the mold cavity corresponding to the arc-shaped thin plate 58, and then flows into the mold cavity corresponding to the flat back plate 59 through the injection groove 37. After demolding, the plastic liquid in the injection groove 37 is the sprue material, which can be broken or sheared off.

[0040] Advantageously, a control motor 47 is fixedly mounted on the inner wall of one side of the placement space 44. A screw 49 is fixedly mounted on the output shaft of the control motor 47. A threaded block 48 is threadedly engaged with the screw 49. A control electric cylinder 46 is mounted on the side of the threaded block 48 near the female mold core 42. The cylinder barrel of the control electric cylinder 46 is fixedly connected to the threaded block 48, and the piston rod of the control electric cylinder 46 is fixedly connected to the movable mold core 45. A sliding space 40 is provided within the female mold shell 11 on the side of the alignment mold core 41 away from the movable mold core 45. The alignment mold core 41 is slidably connected to the sliding space 40. The position of the movable mold core 45 is controlled by the control electric cylinder 46 and the control motor 47. The movable mold core 45 only needs to move horizontally during the first injection. When resetting, the movable mold core 45 needs to move vertically and horizontally to facilitate the separation of the movable mold core 45 from the reinforcement block.

[0041] Advantageously, a molding space 61 is fixedly provided on the side of the movable mold core 45 away from the alignment mold core 41, and a protrusion 60 is fixedly provided on the inner wall of the molding space 61 on the side near the threaded block 48. A reinforcement mold core 54 is fixedly provided on the male mold core 43, and the reinforcement mold core 54 is adapted to fit the protrusion 60. The protrusion 60 forms a rib on the side of the reinforcement block that contacts the curved surface of the curved thin plate 58. During secondary injection molding, the contact area between the secondary injection plastic and the reinforcement block is increased, facilitating the integration of the reinforcement block and the curved thin plate 58. The material of the reinforcement block and the curved thin plate 58 can be different. The reinforcement block mainly considers the strength of the material, while the curved thin plate 58 does not require high strength but needs to be aesthetically pleasing.

[0042] Advantageously, a movable plate 19 is provided on one side of the male mold shell 12, and the movable plate 19 and the male mold shell 12 are connected via a hydraulic cylinder 13, the cylinder barrel of the hydraulic cylinder 13 is fixedly connected to the male mold shell 12, the piston rod of the hydraulic cylinder 13 is fixedly connected to the movable plate 19, and a slide rail 30 fixed to the male mold shell 12 is provided on one side of the hydraulic cylinder 13, a slide bar 22 is provided for sliding inside the slide rail 30, the slide bar 22 is fixedly connected to the movable plate 19, an extension rod 31 is fixed on the slide rail 30, and the extension rod 31 is away from the hydraulic cylinder 13. A connecting rod 17 is fixedly mounted on one end of the pressure cylinder 13. A pressure rod 15 is mounted on one side of the connecting rod 17. A limiting groove 20 is fixedly mounted on the male mold shell 12. The limiting groove 20 extends through the male mold shell 12 and is connected to the reserved groove 33. The pressure rod 15 is slidably mounted within the limiting groove 20. A transmission rod 16 is mounted between the pressure rod 15 and the connecting rod 17. The two ends of the transmission rod 16 are hinged to the pressure rod 15 and the connecting rod 17, respectively. A pressure block 32 is fixedly mounted on the end of the pressure rod 15 away from the transmission rod 16. When the rotating shaft 39 just moves into the reserved groove 33, the pressure block 32 just contacts the rotating shaft 39. The rotating shaft 39 is no longer coaxial with the rotating shaft 28. The continued movement of the rotating shaft 28 will not cause the rotating shaft 39 to move axially.

[0043] Advantageously, a limiting hole 21 is fixedly provided on the mother mold shell 11, and the limiting hole 21 is located on one side of the placement space 44. A limiting post 52 is slidably provided in the mother mold shell 11, and the limiting post 52 is connected to the placement groove 38. A limiting spring 51 is fixedly provided on the end of the limiting post 52 away from the placement groove 38, and a fixing block 50 is fixedly provided on the end of the limiting spring 51 away from the limiting post 52. The fixing block 50 is fixedly connected to the mother mold shell 11. A sensor can be provided on the fixing block 50 to determine whether the rotating shaft 39 has rotated to the ideal position by judging the state of the limiting spring. After the rotating shaft 39 has rotated to the ideal position, the sensor can immediately provide feedback to the correction motor 18. After the rotating shaft 39 stops, the friction beads will not rub against the rotating shaft for a long time, thereby ensuring the service life of the equipment.

[0044] Advantageously, a positioning hole 55 is fixedly provided on the rotating shaft 39, and the positioning hole 55 cooperates with the limiting post 52. The reason why the rotating shaft 39 needs to be fixed in position during the initial injection molding of the reinforcement block is that the rotating shaft 39 is not a complete cylinder during actual production. One or more key slots may be present on its circumference. These key slots are used to limit the permissible rotation range of the rotating shaft 39 after the handle is assembled with the product. This is often done to ensure that the rotating shaft of the handle maintains a fixed position during injection molding.

[0045] Advantageously, the placement slot 26 is fixedly mounted on a telescopic rod 23, the end of the telescopic rod 23 away from the placement slot 26 being fixedly mounted on a support plate 24. A side plate 25 is fixedly mounted at each end of the support plate 24, and the side plates 25 are fixedly connected to the male mold shell 12. A correction motor 18 is fixedly mounted on the side of the movable plate 19 away from the placement slot 26. The output shaft of the correction motor 18 passes through the movable plate 19 and is rotatably connected to the movable plate 19 via a bearing. A rotating shaft 28 is fixedly mounted on the output shaft of the correction motor 18, and friction beads 27 are fixedly mounted on the end of the rotating shaft 28 away from the movable plate 19. By combining this with a common loading device in the industry, the entire injection molding process can be fully automated by placing the rotating shaft 39 on the placement slot 26, reducing production costs while improving production efficiency.

[0046] Advantageously, a guide block 29 is fixedly provided on the end of the movable plate 19 away from the correction motor 18, and a transition slope is provided on the end of the placement groove 26 near the movable plate 19. An alignment groove 35 is fixedly provided on the side of the male mold housing 12 near the movable plate 19. The alignment groove 35 communicates with the end of the insertion hole 34 near the movable plate 19 and mates with the guide block 29. The transition slope forces the placement groove 26 to give way when the movable plate 19 and its associated components approach the male mold housing 12, without affecting the normal movement of the movable plate 19.

[0047] An injection molding method for producing a high-strength handle comprises the following steps:

[0048] S1, mold closing; buckle the female mold shell 11 and the male mold shell 12;

[0049] S2. Install the rotating shaft 39; place the rotating shaft 39 on the placement slot 26, and start the hydraulic cylinder 13 and the correction motor 18 in sequence; the rotating shaft 28 pushes the rotating shaft 39 through the insertion hole 34 to the reserved slot 33, and the pressing block 32 moves to push the rotating shaft 39 into the placement slot 38, and the hydraulic cylinder 13 is stopped. During this process, the rotating shaft 39 squeezes the limiting column 52, and the limiting spring 51 is compressed. Then the rotating shaft 28 rotates and drives the rotating shaft 39 to rotate through the friction bead 27. After the rotating shaft 39 rotates until the positioning hole 55 is aligned with the limiting column 52, the limiting spring 51 is reset, and the correction motor 18 stops;

[0050] S3, adjust the position of the movable mold core 45; control the motor 47 to start, control the threaded block 48 to move along the screw 49, and stop after the molding space 61 is aligned with the reinforcement mold core 54;

[0051] S4, the first injection molding; through the injection head 14 closest to the reinforcing member mold core 54 into the molding space 61, to obtain a reinforcing block fixed to the shaft 39;

[0052] S5, reset the movable mold core 45; start the control electric cylinder 46 and the thread block 48 in sequence, and move the mold core 45 away from the reinforcement block;

[0053] S6, second injection molding; injecting into the mold cavity surrounded by the female mold core 42 and the male mold core 43 through another injection head 14 away from the reinforcement mold core 54, obtaining a curved thin plate 58 and a flat back plate 59 connected together by the nozzle material, wherein the curved thin plate 58 and the reinforcement block are fixed integrally;

[0054] S7, mold opening and assembly; buckle the flat back plate 59 and the curved thin plate 58 to obtain a high-strength handle.

[0055] Working principle of the present invention:

[0056] In the initial state, the limit spring 51 is in a normal state, the return spring in the support plate 24 is in a normal state, the female mold shell 11 is separated from the male mold shell 12, the movable plate 19 is away from the male mold shell 12, and the alignment mold core 41 is away from the sliding space 40;

[0057] Utilize conventional hydraulic means in the industry to buckle the female mold shell 11 and the male mold shell 12 together;

[0058] At this time, the mold cavity enclosed by the female mold core 42 and the male mold core 43 is divided into two parts, corresponding to the curved thin plate 58 and the flat back plate 59 respectively, and the two parts are connected through the injection groove 37;

[0059] Place the rotating shaft 39 on the placement groove 26 and start the hydraulic cylinder 13. The hydraulic cylinder 13 controls the movable plate 19 to approach the male mold shell 12. The slide bar 22 slides along the slide rail 30. The extension rod 31 and the connecting rod 17 move along with the slide bar 22. The friction ball 27, the rotating shaft 28 and the guide block 29 move along with the movable plate 19.

[0060] The friction bead 27 pushes the rotating shaft 39 to slide in the placement groove 26. The rotating shaft 39 is fed into the interior of the male mold shell 12 (inserted into the insertion hole 34 through the alignment groove 35). When the rotating shaft 39 contacts the placement groove 26, the placement groove 26 moves under the action of the transition slope, and the return spring in the telescopic rod 23 is compressed. The placement groove 26 will not block the movement of the movable plate 19.

[0061] The connecting rod 17 drives the pressure rod 15 to slide along the limiting groove 20 through the transmission rod 16. The pressure block 32 moves along with the pressure rod 15. After the pressure block 32 contacts the rotating shaft 39, it pushes the rotating shaft 39 into the placement groove 38 (at this time, the positioning hole 55 and the limiting column 52 are most likely not aligned). The rotating shaft 39 presses the limiting column 52 to retract into the limiting hole 21. The limiting spring 51 is in a compressed state, and the hydraulic cylinder 13 stops.

[0062] The correction motor 18 is started and controls the rotation shaft 28 to rotate. The friction beads 27 rotate along with the rotation shaft 28. The friction beads 27 contact the side of the rotation shaft 39. Under the action of friction, the friction beads 27 drive the rotation shaft 39 to rotate (the contact surface between the placement groove 38 and the pressure block 32 and the rotation shaft 39 are all smooth). After the rotation shaft 39 rotates, when the positioning hole 55 is aligned with the limit post 52, the limit post 52 is immediately reset under the action of the limit spring 51, locking the rotation shaft 39. At this time, the friction beads 27 rotate but do not drive the rotation shaft 39 to rotate. Then the correction motor 18 stops.

[0063] At this time, one end of the rotating shaft 39 extends into the female mold core 42;

[0064] The control motor 47 is started, and the control motor 47 drives the screw 49 to rotate. The threaded block 48 cannot rotate, and the threaded block 48 moves along the screw 49. After the threaded block 48 moves, it drives the control electric cylinder 46 to move. The movable mold core 45 and the alignment mold core 41 move along with the control electric cylinder 46, and the molding space 61 is aligned with the reinforcement mold core 54;

[0065] The liquid is injected into the molding space 61 through an injection head 14 closest to the reinforcement mold core 54 (an injection hole 53 closest to the reinforcement mold core 54 is connected to the reinforcement mold core 54). After a certain period of time, a reinforcement block is obtained, and the reinforcement block is fixedly connected to the rotating shaft 39.

[0066] When resetting the movable mold core 45, the control electric cylinder 46 is first activated to move the movable mold core 45 away from the male mold shell 12. The counter mold core 41 and the movable mold core 45 move simultaneously, and the movable mold core 45 is separated from the reinforcing block. Then, the control motor 47 is activated to drive the threaded block 48 to move, so that the movable mold core 45 and the counter mold core 41 are away from the sliding space 40. Finally, the control electric cylinder 46 is activated again to move the movable mold core 45 toward the male mold shell 12. The curved surfaces of the movable mold core 45 and the counter mold core 41 are closely fitted with the curved surface of the female mold core 42.

[0067] (This process can be achieved by reversing the hydraulic cylinder 13 to control the reset of the movable plate 19 and the components related to the movable plate 19)

[0068] The injection liquid is injected into the mold cavity through other injection heads 14 away from the reinforcement mold core 54, and the injection liquid passes through the injection groove 37 to fill the entire mold cavity;

[0069] After a certain period of time, the curved thin plate 58 and the flat back plate 59 are obtained. After the mold is opened, the semi-finished product is taken out, the nozzle material (mainly formed by the liquid injection groove 37) is removed, and the curved thin plate 58 and the flat back plate 59 are buckled together. The exposed side of the reinforcement block is blocked by the curved thin plate 58.

[0070] It should be noted that the semi-finished curved thin plate 58 and the flat back plate 59 also have multiple splicing columns and splicing holes, as well as reinforcing ribs and other structures (not shown), which are obtained by the special shape of the mold core (not shown); a high-strength handle is suitable for box-shaped products, and the rotating shaft 39 is rotatably connected to the box-shaped product; the surface of the box-shaped product has a groove that matches the shape of the handle. When the handle is closed, the flat back plate 59 fits into the surface of the product groove. When it is used, the handle and the rotating shaft 39 are rotated 90 degrees.

[0071] The handle only needs one end to be connected to the product, which makes installation easy; the shaft 39 is long and not easily deformed during long-term use; a solid reinforcement block is provided at the connection between the shaft 39 and the curved thin plate 58, which has high strength, and the rest of the handle is a hollow structure, so the handle is light in weight and low in cost.

[0072] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0073] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. An injection mold for producing high-strength handles, characterized by: The cam is fixed with a female mold core on one side of the female mold shell, and a male mold core is fixed with a male mold core on one side of the male mold shell near the female mold shell; a placement space is provided inside the female mold shell, a movable mold core is slidably provided in the placement space, and a counter mold core is fixed on one side of the movable mold core, a placement groove is fixed on the female mold shell, the placement groove is located on one side of the female mold core, a rotating shaft is placed in the placement groove, one end of the rotating shaft is communicated with the counter mold core, and the counter mold core and the movable mold core are communicated with the female mold core; a reserved groove is fixed on the male mold shell, the reserved groove is located on one side of the male mold core, an insertion hole is fixed in the male mold shell, one end of the insertion hole is communicated with the reserved groove, the other end of the insertion hole passes through the male mold shell, and the insertion hole passes through one end of the male mold shell and is provided with a placement groove; Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. A limiting hole is fixedly provided on the mother mold shell, and the limiting hole is located on one side of the placement space. A limiting column is slidingly provided in the mother mold shell, and the limiting column is connected to the placement groove. A limiting spring is fixedly provided on the end of the limiting column away from the placement groove, and a fixing block is fixedly provided on the end of the limiting spring away from the limiting column, and the fixing block is fixedly connected to the mother mold shell.

2. The injection mold for producing a high-strength handle according to claim 1, characterized in that: The male mold core is provided with a plurality of injection holes, and an injection head is installed in the injection hole, and the injection head passes through the male mold shell; the female mold shell and the male mold shell are provided with a plurality of one-to-one corresponding injection grooves, the injection grooves on the female mold shell are connected to the male mold core, and the injection grooves on the male mold shell are connected to the female mold core, and the injection grooves on the female mold shell and the injection grooves on the male mold shell cooperate to form a cylindrical channel.

3. The injection mold for producing a high-strength handle according to claim 2, characterized in that: A control motor is fixedly provided on an inner wall of one side of the placement space, a screw is fixedly provided on the output shaft of the control motor, a threaded block is fitted on the screw thread, a control electric cylinder is provided on the side of the threaded block close to the female mold core, the cylinder barrel of the control electric cylinder is fixedly connected to the threaded block, and the piston rod of the control electric cylinder is fixedly connected to the movable mold core; a sliding space located inside the female mold shell is provided on the side of the alignment mold core away from the movable mold core, and the alignment mold core is slidably connected to the sliding space.

4. The injection mold for producing a high-strength handle according to claim 3, characterized in that: A molding space is fixedly provided on the side of the movable mold core away from the positioning mold core, and a protrusion is fixedly provided on the inner wall of the molding space close to the threaded block; a reinforcement mold core is fixed on the male mold core, and the reinforcement mold core is adapted to the protrusion.

5. The injection mold for producing a high-strength handle according to claim 1, characterized in that: A positioning hole is fixedly provided on the rotating shaft, and the positioning hole cooperates with the limiting column.

6. The injection mold for producing a high-strength handle according to claim 4, characterized in that: The placement slot is fixedly provided on the telescopic rod, and the end of the telescopic rod away from the placement slot is fixedly provided on the support plate, and a side plate is fixedly provided at each end of the support plate, and the side plate is fixedly connected to the male mold shell; a correction motor is fixedly provided on the side of the movable plate away from the placement slot, and the output shaft of the correction motor passes through the movable plate, and the output shaft of the correction motor is rotatably connected to the movable plate through a bearing, and a rotating shaft is fixedly provided on the output shaft of the correction motor, and a friction bead is fixedly provided on the end of the rotating shaft away from the movable plate.

7. The injection mold for producing a high-strength handle according to claim 6, characterized in that: A guide block is fixedly provided at one end of the movable plate away from the correction motor, a transition slope is provided at one end of the placement groove close to the movable plate, and a transition slope is provided at one end of the movable plate close to the movable plate; an alignment groove is fixedly provided on one side of the male mold shell close to the movable plate, the alignment groove is connected with the end of the insertion hole close to the movable plate, and the alignment groove is adapted to the guide block.

8. An injection molding method for producing a high-strength handle, using the injection molding mold for producing a high-strength handle according to any one of claims 1 to 7, characterized in that: The following steps are included: S1. Close the mold; snap the female mold shell and the male mold shell together; S2. Install the rotating shaft; place the rotating shaft on the placement slot, start the hydraulic cylinder and the correction motor in sequence; the rotating shaft pushes the rotating shaft through the insertion hole to the reserved slot, the pressure block moves to push the rotating shaft into the placement slot, and the hydraulic cylinder is stopped. During this process, the rotating shaft squeezes the limit column, the limit spring is compressed, and then the rotating shaft rotates and drives the rotating shaft to rotate through the friction ball. After the rotating shaft rotates until the positioning hole is aligned with the limit column, the limit spring resets and the correction motor stops; S3, adjust the position of the movable mold core; control the motor to start, control the thread block to move along the screw, and stop after the molding space is aligned with the reinforcement mold core; S4, first injection molding; injecting liquid into the molding space through an injection head closest to the reinforcement mold core to obtain a reinforcement block fixed to the shaft; S5, reset the moving mold core; start the control electric cylinder and thread block in sequence, and move the mold core away from the reinforcement block; S6, second injection molding; injecting into the mold cavity surrounded by the female mold core and the male mold core through another injection head away from the reinforcement mold core, thereby obtaining a curved thin plate and a flat back plate connected together by the nozzle material, wherein the curved thin plate and the reinforcement block are fixed integrally; S7. Open the mold and assemble; buckle the flat back panel and the curved thin plate to obtain a high-strength handle.

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