Injection mold convenient for stripping
By setting slidable pushing parts and movable counterweight plates connected by damping on the front and rear molds of the injection molds, the problem of easy dropping of traditional injection molds when the plastic parts are unmolded is solved, the effective limit and efficient removal of plastic parts are achieved, and the quality and production efficiency of plastic parts are improved.
Patent Information
- Application Number
- CN202411241550.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-03-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the plastic parts are released from the traditional injection mold, due to the lack of effective limiting devices, the plastic parts are prone to falling off during the molding process, resulting in surface deformation or wear, affecting the quality of the plastic parts.
An injection mold is designed to facilitate deduplication. By providing slidable pushing parts on the front and rear molds, the driving cylinder and the driving frame are used to achieve limiting and pushing of the plastic parts. Combined with the damping spring connection of the movable counter plate and the top material part, the clamping space is adjusted to facilitate removal of the plastic parts.
Effectively prevent plastic parts from falling during the mold release process, reduce surface deformation and wear, and improve the quality and production efficiency of plastic parts.
Smart Images
Figure CN119610550A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of injection molds, and in particular to an injection mold which is convenient for removing materials. Background Art
[0002] Injection molds are common plastic parts molding equipment. Injection molds are made by setting a fixed mold and a movable mold on a workbench. The fixed mold is provided with a molding cavity, and the movable mold is connected to a hydraulic cylinder. Under the operation of the hydraulic cylinder, after the movable mold and the fixed mold are buckled, the molding cavity is in a closed state to form a mold cavity for the plastic part, and then liquefied plastic is injected into the molding cavity through the gate on the fixed mold. After the liquefied plastic cools down, a plastic part is formed. At this time, the movable mold can be separated from the fixed mold to take out the plastic part.
[0003] In order to facilitate demolding, traditional injection molds are generally provided with a push rod running through the mold. When the movable mold is separated from the fixed mold, the push rod is restored to its position in the fixed mold under the action of a spring to push the molded plastic part out of the cavity for demolding. In this process, when the plastic part is suddenly pushed out by the rebounding push rod, due to the lack of an external receiving device, the suddenly pushed out plastic part falls from the fixed mold without support. The plastic part falls in an inappropriate position, which can easily cause deformation or wear on the surface of the plastic part, affecting the quality of the plastic part. Summary of the invention
[0004] In order to solve the above technical problems, the present invention provides an injection mold which can limit the position of the plastic parts after demoulding and is convenient for demoulding.
[0005] The technical solution of the present invention is achieved in this way:
[0006] An injection mold that is easy to remove materials, comprising:
[0007] Support platform;
[0008] A front mold having a first molding groove and a first pushing channel;
[0009] A rear mold having a second molding groove and a second material pushing channel;
[0010] A first driving member, which is horizontally displaceably mounted on the top of the supporting platform and is used to drive the front mold;
[0011] A second driving member, mounted on the top of the supporting platform so as to be displaceable in a horizontal direction, and used for driving the rear mold;
[0012] A first pushing member, fixedly mounted on the supporting platform and slidably mounted in the first pushing channel;
[0013] A second pushing member, fixedly mounted on the supporting platform and slidably mounted in the second pushing channel;
[0014] Wherein, the second pushing member includes a lifting member and a movable material abutment plate, the lifting member is connected to the movable material abutment plate via a damping spring, and the movable material abutment plate penetrates and is slidably installed in the second pushing channel.
[0015] Furthermore, the first driving member includes a first driving cylinder and a first driving frame, the first driving cylinder is installed on the supporting platform, one end of the first driving frame is fixedly installed on the driving end of the first driving cylinder, and the other end of the first driving frame is installed on the front mold by bolts.
[0016] Furthermore, the second driving member includes a second driving cylinder and a second driving frame, the second driving cylinder is installed on the supporting platform, one end of the second driving frame is fixedly installed on the driving end of the second driving cylinder, and the other end of the second driving frame is installed on the rear mold by bolts.
[0017] Furthermore, the first pushing member includes a pushing plate and a first pushing leg, the first pushing leg is fixedly mounted on the top of the supporting platform, the pushing plate is fixedly mounted on the top of the first pushing leg, the inner end of the pushing plate matches the shape of the first pushing channel, and is arranged parallel to the first pushing channel.
[0018] Furthermore, the ejecting member includes a ejecting plate and a second pushing leg, the second pushing leg is fixedly mounted on the top of the supporting platform, the ejecting plate is fixedly mounted on the top of the second pushing leg, the inner end of the ejecting plate matches the shape of the second pushing channel, and is arranged parallel to the second pushing channel.
[0019] Furthermore, the first push channel and the second push channel are respectively arranged along the thickness direction of the front mold and the rear mold, the push plate is arranged in a "T" shape, and the ejector plate is arranged in a "π" shape;
[0020] Wherein, in the casting state, the inner end of the push plate is flush with the inner end of the first push channel, and the inner end of the movable abutment plate is flush with the inner end of the second push channel.
[0021] Furthermore, the first pusher also includes a first cooling pump and a first cooling pipe. The first cooling pump is fixedly installed on the supporting platform. The first cooling pipe is respectively connected to the output end and the input end of the first cooling pump. The first cooling pipe is installed in the pusher plate.
[0022] Further, the second pusher further includes a second cooling pump and a second cooling pipe. The second cooling pump is fixedly installed on the support platform. The head and tail of the second cooling pipe are respectively connected to the output end and the input end of the second cooling pump. The second cooling pipe is installed through the ejector plate and the movable material pressing plate.
[0023] Further, the ejector plate has a first cooling channel, which is arranged in a "ji" shape, and the first cooling pipe is installed through the first cooling channel.
[0024] The ejector plate has a second cooling channel, which is arranged in a "er" shape, the movable material pressing plate has a third cooling channel, which is arranged in an "n" shape, and the second cooling pipe is installed through the second cooling channel and the third cooling channel.
[0025] Further, the second cooling pipe includes a main cooling pipe, a secondary cooling pipe and a connecting pipe. There are two groups of secondary cooling pipes, which are respectively connected to the output end and the input end of the second cooling pump. The secondary cooling pipe is installed through the second cooling channel. The main cooling pipe is installed through the third cooling channel. One end of the connecting pipe is slidably installed on the main cooling pipe, and the other end is slidably installed on the secondary cooling pipe.
[0026] The present invention has the following beneficial effects:
[0027] For the injection mold for facilitating demolding in the embodiment of the present invention, by penetrating and arranging a slidable first pusher on the front mold and a slidable second pusher on the rear mold, when demolding, by moving the front mold in the reverse direction, the effect that the first pusher ejects the plastic part from the front mold can be achieved. By moving the rear mold in the reverse direction, the effect that the second pusher ejects the plastic part from the rear mold can be achieved, and the demolded plastic part is clamped. And the second pusher is split into a movable material pressing plate and a top material part, so that the clamped space of the plastic part can be adjusted, so as to facilitate taking out the plastic part by adjusting the clamped space of the plastic part. Description of the Drawings
[0028] Figure 1 is a schematic diagram of the initial state of the injection mold for facilitating demolding of the present invention;
[0029] Figure 2 is the present invention Figure 1 is a schematic diagram of the structure of the front mold, the first driving part and the first pusher in the present invention;
[0030] Figure 3 is a schematic diagram of the use state of the injection mold for facilitating demolding of the present invention;
[0031] Figure 4 is the present invention Figure 3A schematic diagram of the structure of the middle material support member and the movable material support plate;
[0032] Figure 5 The present invention Figure 2 An exploded view of the first driving cylinder, the first driving frame, the push plate, the first push leg, the first cooling pump and the first cooling pipe;
[0033] Figure 6 The present invention Figure 4 Exploded view of the middle top piece, the movable abutment plate and the second cooling tube;
[0034] Figure 7 The present invention Figure 3 A schematic diagram of the structure of the second driving member and the second cooling pump;
[0035] Figure 8 The present invention Figure 6 Schematic diagram of the structure of the movable material-repelling plate.
[0036] Reference numerals:
[0037] 100, support platform; 110, fixing plate; 200, front mold; 201, first molding groove; 203, first material pushing channel; 300, rear mold; 301, second molding groove; 303, second material pushing channel; 400, first driving member; 410, first driving cylinder; 420, first driving frame; 500, second driving member; 510, second driving cylinder; 520, second driving frame; 600, first material pushing member; 610, material pushing plate; 61 1. First cooling channel; 620. First material pushing leg; 630. First cooling pump; 640. First cooling pipe; 700. Second material pushing member; 710. Material pushing member; 711. Second cooling channel; 712. Material pushing plate; 714. Second material pushing leg; 720. Movable material pushing plate; 721. Third cooling channel; 730. Second cooling pump; 740. Second cooling pipe; 742. Main cooling pipe; 744. Secondary cooling pipe; 746. Connecting pipe. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.
[0039] See also Figures 1 to 8 The present invention provides an injection mold which is easy to remove materials.
[0040] like Figure 1 and Figure 2As shown, in one embodiment, an injection mold for facilitating material stripping includes a support platform 100 , a front mold 200 , a rear mold 300 , a first driving member 400 , a second driving member 500 , a first pushing member 600 and a second pushing member 700 .
[0041] The front mold 200 has a first molding groove 201 and a first pushing channel 203 .
[0042] Specifically, a first gate is provided through the top of the front mold 200 corresponding to the first molding groove 201 .
[0043] The rear mold 300 has a second molding groove 301 and a second pushing channel 303 .
[0044] Specifically, a second gate is provided through the top of the rear mold 300 corresponding to the second molding groove 301 .
[0045] The first driving member 400 is installed on the top of the supporting platform 100 so as to be displaceable in the horizontal direction, and is used to drive the front mold 200 .
[0046] The second driving member 500 is installed on the top of the supporting platform 100 so as to be displaceable in the horizontal direction, and is used for driving the rear mold 300 .
[0047] The first pushing member 600 is fixedly mounted on the supporting platform 100 , and is slidably mounted in the first pushing channel 203 .
[0048] The second pushing member 700 is fixedly mounted on the supporting platform 100 , and is slidably mounted in the second pushing channel 303 .
[0049] The second pushing member 700 includes a lifting member 710 and a movable abutting plate 720 . The lifting member 710 and the movable abutting plate 720 are connected via a damping spring. The movable abutting plate 720 penetrates and is slidably installed in the second pushing channel 303 .
[0050] Specifically, when casting the workpiece, the first driving member 400 pushes the front mold 200 to move toward the rear mold 300, and the second driving member 500 pushes the rear mold 300 toward the front mold 200, until one end of the first pushing member 600 translates in the front mold 200 to a position flush with the inner end of the first pushing channel 203, and the inner end of the movable abutment plate 720 translates in the rear mold 300 to a position flush with the inner end of the second pushing channel 303. At this time, the front mold 200 is tightly fitted with the rear mold 300, and the plastic melt is cast in the cavity enclosed by the front mold 200 and the rear mold 300, and the plastic melt is gradually filled in the cavity until the entire cavity is filled.
[0051] After the plastic melt is solidified and formed, the first driving member 400 and the second driving member 500 are started again. The first driving member 400 drives the front mold 200 to move back to the initial position in the opposite direction. The plastic part is limited by the first pushing member 600 and separated from the front mold 200. The second driving member 500 drives the rear mold 300 to move back to the initial position in the opposite direction. The plastic part is limited by the movable abutment plate 720 and separated from the rear mold 300. Since the positions of the first driving member 400 and the second driving member 500 remain unchanged, the molded plastic part is clamped by the first pushing member 600 and the movable abutment plate 720 to stand on the support platform 100. Since the movable abutment plate 720 is connected to the top member 710 by a damping spring, the distance between the first driving member 400 and the movable abutment plate 720 is adjustable. Therefore, the clamping state of the plastic part can be released by pushing the movable abutment plate 720, which facilitates the removal of the plastic part using a clamp.
[0052] In this embodiment, the first driving member 400 includes a first driving cylinder 410 and a first driving frame 420. The first driving cylinder 410 is installed on the supporting platform 100. One end of the first driving frame 420 is fixedly installed on the driving end of the first driving cylinder 410, and the other end of the first driving frame 420 is installed on the front mold 200 by bolts.
[0053] like Figure 3 As shown, in one embodiment, the second driving member 500 includes a second driving cylinder 510 and a second driving frame 520, the second driving cylinder 510 is installed on the supporting platform 100, one end of the second driving frame 520 is fixedly installed on the driving end of the second driving cylinder 510, and the other end of the second driving frame 520 is installed on the rear mold 300 by bolts.
[0054] Optionally, two sets of fixing plates 110 are symmetrically installed on the top of the supporting platform 100, and the first driving cylinder 410 and the second driving cylinder 510 are respectively installed on the fixing plates 110 at corresponding ends by bolts.
[0055] In this embodiment, the first pusher 600 (see Figure 1 ) includes a push plate 610 and a first push leg 620, the first push leg 620 is fixedly mounted on the top of the support platform 100, the push plate 610 is fixedly mounted on the top of the first push leg 620, the inner end of the push plate 610 matches the shape of the first push channel 203, and is arranged parallel to the first push channel 203.
[0056] like Figure 4As shown, in one embodiment, the ejection member 710 includes a ejection plate 712 and a second ejection leg 714, the second ejection leg 714 is fixedly mounted on the top of the support platform 100, the ejection plate 712 is fixedly mounted on the top of the second ejection leg 714, the inner end of the ejection plate 712 matches the shape of the second ejection channel 303, and is arranged parallel to the second ejection channel 303.
[0057] Optionally, a spring slot is provided in the ejection plate 712, and a damping spring on the ejection plate 712 is installed in the spring slot by means of bolts.
[0058] In this embodiment, the first push channel 203 and the second push channel 303 are respectively arranged along the thickness direction of the front mold 200 and the rear mold 300 (see Figure 1 ), push plate 610 (see Figure 3 ) is arranged in a "T" shape, and the top plate 712 is arranged in a "π" shape;
[0059] In the casting state, the inner end of the push plate 610 is flush with the inner end of the first push channel 203 , and the inner end of the movable abutment plate 720 is flush with the inner end of the second push channel 303 .
[0060] Preferably, two groups of pusher plates 610 are provided, and a connecting plate is fixedly installed between the two groups of pusher plates 610 .
[0061] Specifically, during casting, the inner end of the push plate 610 is flush with the first push channel 203, and the surface of the inner end of the push plate 610 fills the inner wall of the first molding groove 201. The inner end of the movable abutment plate 720 is flush with the inner end of the second push channel 303, and the surface of the inner end of the movable abutment plate 720 fills the inner wall of the second molding groove 301, thereby forming a complete cavity.
[0062] like Figure 5 As shown, in one embodiment, the first pusher 600 (see Figure 1 ) also includes a first cooling pump 630 and a first cooling pipe 640, the first cooling pump 630 is fixedly mounted on the supporting platform 100 (see Figure 2 ), the first cooling pipe 640 is connected to the output end and the input end of the first cooling pump 630 at both ends, and the first cooling pipe 640 is installed in the push plate 610 through.
[0063] In this embodiment, the second pusher 700 (see Figure 1 ) also includes a second cooling pump 730 and a second cooling pipe 740 (see Figure 4 ), the second cooling pump 730 is fixedly mounted on the supporting platform 100 (see Figure 2) On the top, the second cooling pipe 740 is respectively connected to the output end and the input end of the second cooling pump 730 at its head and tail, and the second cooling pipe 740 is installed through the top material plate 712 and the movable material pressing plate 720.
[0064] In this embodiment, the pushing plate 610 has a first cooling channel 611, the first cooling channel 611 is arranged in a "Ji" shape, and the first cooling pipe 640 is installed through the first cooling channel 611.
[0065] As Figures 6 to 8 shown, in one embodiment, the top material plate 712 has a second cooling channel 711, the second cooling channel 711 is arranged in a "Er" shape, the movable material pressing plate 720 has a third cooling channel 721, the third cooling channel 721 is arranged in an "n" shape, and the second cooling pipe 740 is installed through the second cooling channel 711 and the third cooling channel 721.
[0066] In this embodiment, the second cooling pipe 740 (see Figure 4 ) includes a main cooling pipe 742, a secondary cooling pipe 744 and a connecting pipe 746. There are two groups of secondary cooling pipes 744, and they are respectively connected to the output end and the input end of the second cooling pump 730. The secondary cooling pipe 744 is installed through the second cooling channel 711. The main cooling pipe 742 is installed through the third cooling channel 721. One end of the connecting pipe 746 is slidably installed on the main cooling pipe 742, and the other end is slidably installed on the secondary cooling pipe 744.
[0067] Preferably, both ends of the main cooling pipe 742 have a first annular limiting portion, and one end of the secondary cooling pipe 744 adjacent to the main cooling pipe 742 has a second annular limiting portion.
[0068] Specifically, during the casting process, the first cooling pump 630 and the second cooling pump 730 are started. The first cooling pump 630 inputs the coolant into the first cooling pipe 640. The low-temperature coolant in the first cooling pipe 640 cools the pushing plate 610, thereby cooling one end of the plastic part in the front mold 200 to accelerate the cooling and solidification of the plastic melt. The second cooling pump 730 inputs the coolant into the secondary cooling pipe 744. The coolant enters the main cooling pipe 742 from the secondary cooling pipe 744 through the connecting pipe 746. The low-temperature coolant in the main cooling pipe 742 cools the movable material pressing plate 720, thereby cooling one end of the plastic part in the rear mold 300.
[0069] When demolding the plastic part, the front mold 200 and the rear mold 300 are respectively pulled and moved away from each other by the first driving frame 420 and the second driving frame 520. The positions of the pushing plate 610 and the movable material pressing plate 720 remain unchanged, and they still maintain the clamping state of the formed plastic part. At this time, the circulating coolant makes the pushing plate 610 and the movable material pressing plate 720 maintain a low temperature to cool the formed plastic part.
[0070] When the plastic part is removed from between the push plate 610 and the movable abutment plate 720, since a damping spring is installed between the movable abutment plate 720 and the top plate 712, the movable abutment plate 720 is moved toward the top plate 712 to release the clamping state of the molded plastic part, so that the molded plastic part can be taken out easily. In addition, the movable abutment plate 720 is kept at a low temperature under the action of the low-temperature coolant, so that the staff can manually push the movable abutment plate 720 closer to the top plate 712.
[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. An injection mold that is easy to remove material, characterized in that: include: Support platform (100); The front mold (200) has a first molding groove (201) and a first material pushing channel (203); The rear mold (300) has a second molding groove (301) and a second material pushing channel (303); A first driving member (400) is installed on the top of the supporting platform (100) so as to be displaceable in a horizontal direction and is used to drive the front mold (200); A second driving member (500) is installed on the top of the supporting platform (100) so as to be displaceable in a horizontal direction and is used to drive the rear mold (300); A first material pushing member (600) is fixedly mounted on the support platform (100) and slidably mounted in the first material pushing channel (203); A second material pushing member (700) is fixedly mounted on the support platform (100) and slidably mounted in the second material pushing channel (303); Wherein, the second pushing member (700) includes a lifting member (710) and a movable material resistance plate (720), the lifting member (710) and the movable material resistance plate (720) are connected via a damping spring, and the movable material resistance plate (720) penetrates and is slidably installed in the second pushing channel (303).
2. The injection mold for easy stripping according to claim 1, characterized in that: The first driving member (400) comprises a first driving cylinder (410) and a first driving frame (420), wherein the first driving cylinder (410) is mounted on the supporting platform (100), one end of the first driving frame (420) is fixedly mounted on the driving end of the first driving cylinder (410), and the other end of the first driving frame (420) is mounted on the front mold (200) by means of bolts.
3. The injection mold for easy stripping according to claim 1, characterized in that: The second driving member (500) comprises a second driving cylinder (510) and a second driving frame (520), wherein the second driving cylinder (510) is mounted on the supporting platform (100), one end of the second driving frame (520) is fixedly mounted on the driving end of the second driving cylinder (510), and the other end of the second driving frame (520) is mounted on the rear mold (300) by means of bolts.
4. The injection mold for easy stripping according to claim 2, characterized in that: The first pushing member (600) includes a pushing plate (610) and a first pushing leg (620), wherein the first pushing leg (620) is fixedly mounted on the top of the supporting platform (100), and the pushing plate (610) is fixedly mounted on the top of the first pushing leg (620), and the inner end of the pushing plate (610) matches the shape of the first pushing channel (203) and is arranged parallel to the first pushing channel (203).
5. The injection mold for easy stripping according to claim 3, characterized in that: The ejection member (710) includes an ejection plate (712) and a second ejection leg (714), wherein the second ejection leg (714) is fixedly mounted on the top of the support platform (100), and the ejection plate (712) is fixedly mounted on the top of the second ejection leg (714), and the inner end of the ejection plate (712) matches the shape of the second ejection channel (303) and is arranged parallel to the second ejection channel (303).
6. The injection mold for easy stripping according to claim 4 or 5, characterized in that: The first material pushing channel (203) and the second material pushing channel (303) are respectively arranged through the front mold (200) and the rear mold (300) along the thickness direction. The material pushing plate (610) is arranged in a "T" shape, and the ejector plate (712) is arranged in a "π" shape; Among them, in the casting state, the inner end of the material pushing plate (610) is flush with the inner end of the first material pushing channel (203), and the inner end of the movable material blocking plate (720) is flush with the inner end of the second material pushing channel (303).
7. The injection mold for easy stripping according to claim 6, characterized in that: The first material pushing member (600) further includes a first cooling pump (630) and a first cooling pipe (640). The first cooling pump (630) is fixedly installed on the support platform (100). The first cooling pipe (640) is respectively connected to the output end and the input end of the first cooling pump (630) at its head and tail, and the first cooling pipe (640) is installed through the material pushing plate (610).
8. The injection mold for easy stripping according to claim 7, characterized in that: The second material pushing member (700) further includes a second cooling pump (730) and a second cooling pipe (740). The second cooling pump (730) is fixedly installed on the support platform (100). The second cooling pipe (740) is respectively connected to the output end and the input end of the second cooling pump (730) at its head and tail, and the second cooling pipe (740) is installed through the ejector plate (712) and the movable material blocking plate (720).
9. The injection mold for easy stripping according to claim 8, characterized in that: The material pushing plate (610) has a first cooling channel (611), and the first cooling channel (611) is arranged in a "J" shape. The first cooling pipe (640) is installed through the first cooling channel (611). The ejector plate (712) has a second cooling channel (711), and the second cooling channel (711) is arranged in a "儿" shape. The movable material blocking plate (720) has a third cooling channel (721), and the third cooling channel (721) is arranged in an "n" shape. The second cooling pipe (740) is installed through the second cooling channel (711) and the third cooling channel (721).
10. The injection mold for easy stripping according to claim 9, characterized in that: The second cooling pipe (740) includes a main cooling pipe (742), a secondary cooling pipe (744) and a connecting pipe (746). There are two groups of secondary cooling pipes (744), which are respectively connected to the output end and the input end of the second cooling pump (730). The secondary cooling pipe (744) is installed through the second cooling channel (711). The main cooling pipe (742) is installed through the third cooling channel (721). One end of the connecting pipe (746) is slidably installed on the main cooling pipe (742), and the other end is slidably installed on the secondary cooling pipe (744).