A high-precision cover injection mold
By designing automatic core extraction and core extraction mechanisms in the cover injection mold, the problem of operators needing to manually install and remove molded columns is solved, and automated operations are achieved, the process is simplified and the accuracy is improved.
Patent Information
- Application Number
- CN202421370258.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The existing cover injection molds require operators to manually install and remove the forming column before and after mold closing and opening, resulting in trouble in operation.
A high-precision cover injection mold is designed, adopting a first core pulling mechanism and a second core pulling mechanism. The core pulling seat is driven to slide through the driving member, and the forming column is automatically moved, realizing automatic core pulling and core-up operation.
The operator does not need to manually move the molded column, which simplifies the operation process, facilitates the mold release of the cover, and reduces the probability of the position deviation of the molded column through the restriction part.
Smart Images
Figure CN222727276U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of molds, in particular to a high-precision cover injection mold. Background Art
[0002] There are many cups for liquids on the market, most of which use snap-on covers to close the water outlet of the container, which can protect the nozzle. The cover is injection molded.
[0003] Related art covers such as Figure 1 As shown, it comprises a cover body 7, one end of which is provided with two connection blocks 71, the two connection blocks 71 are provided with first through holes 711, and the other end of the cover body 7 is provided with a cavity 72 for accommodating a cover opening button.
[0004] Related art injection molding front mold 1 as Figure 2 As shown, the front injection mold 1 is provided with a second through hole 11. The operator inserts the molding column 43 through the second through hole 11 so that both ends of the molding column extend out of the second through hole 11 respectively, and the portion of the molding column 43 extending out of the second through hole 11 can be used to form the first through holes 711 on the two connecting blocks 71.
[0005] The above-mentioned related technical solutions have the following defects: when using the above-mentioned mold, before closing the mold, the operator needs to install the molding column on the front injection mold. After opening the mold, the operator needs to pull out the molding column so that the push rod can push up to continue demolding the cover, and the whole process is more troublesome. Utility Model Content
[0006] In order to facilitate demoulding of the cover, the present application provides a high-precision cover injection mold.
[0007] The high-precision cover injection mold provided in this application adopts the following technical solution:
[0008] A high-precision cover injection mold, comprising a front mold and a rear mold, wherein the front mold and the rear mold together form a molding cavity for molding a cover body, and further comprising a first core pulling mechanism, a second core pulling mechanism and an ejection mechanism, wherein the first core pulling mechanism comprises a driving member 1, a first core pulling seat and a first core pulling block for molding an upper cavity of the cover body, wherein the first core pulling block is fixedly arranged on the first core pulling seat, the first core pulling seat slides in the front mold along a corresponding core pulling direction, and the driving member 1 is used to drive the second core pulling seat to slide;
[0009] The second core pulling mechanism includes a second driving member, a second core pulling seat and a molding column for molding the first through hole on the cover body. The molding column is detachably arranged on the second core pulling seat. The second core pulling seat slides in the front mold along the corresponding core pulling direction. The second driving member is used to drive the second core pulling seat to slide. The ejection mechanism is used to drive the cover body to separate from the front mold.
[0010] By adopting the above technical solution, during core pulling and injection molding, the driving member 2 can drive the first core pulling seat to move, and the first core pulling seat drives the molding column to move, so that the core pulling or core loading operation can be automatically performed without the operator manually moving the molding column, which can facilitate the demoulding of the cover.
[0011] Preferably, the first driving member is a first core-pulling column, one end of which is fixed on the rear mold, the first core-pulling column is inclined, and the first core-pulling column slides on the first core-pulling seat along the inclined direction;
[0012] The second driving member is a second core-pulling column, one end of which is fixed on the rear mold, the second core-pulling column is inclined, and the second core-pulling column slides on the second core-pulling seat along the inclined direction.
[0013] By adopting the above technical scheme, when the mold is opened, the rear mold drives the first core-pulling column and the second core-pulling column to move toward the side away from the front mold, the first core-pulling column drives the first core-pulling seat to move toward the side away from the cover body, and the second core-pulling column also drives the second core-pulling seat to move toward the side away from the cover body, thereby realizing automatic core pulling; when the mold is closed, the rear mold drives the first core-pulling column and the second core-pulling column to move toward the front mold, the first core-pulling column drives the first core-pulling seat to move toward the cover body, and the second core-pulling column also drives the second core-pulling seat to move toward the cover body, thereby realizing the first core-pulling block and the molding column are reset, and injection molding can continue.
[0014] Preferably, the protrusion at one end of the molding column away from the second core-pulling seat is arranged in a hemispherical shape.
[0015] By adopting the above technical solution, since the molding column needs to be inserted into the second through hole on the front mold, the end of the molding column inserted into the second through hole is set to be hemispherical, which can play a guiding role during the insertion process and increase the probability of the molding column being inserted into the second through hole.
[0016] Preferably, the cross section of the forming column is T-shaped, a corresponding installation through groove is formed through the second core-pulling seat, and the short end of the forming column is locked in the second core-pulling seat by a bolt.
[0017] Preferably, a limiting member is provided on the front mold, and the limiting member acts on the molding column to limit the molding column to always face the second through hole on the front mold during the movement.
[0018] By adopting the above technical solution, the limiting member can limit the sliding of the molding column. If the sliding of the first core pulling seat deviates, it is very likely to cause the molding column to tilt or the moving position to deviate, causing the molding column to be inserted into the second through hole, resulting in the mold being unable to be used normally; the limiting member can reduce the probability of the above situation occurring.
[0019] Preferably, the limiting member includes a fixed block, which is fixedly arranged on the front mold, and the rear mold is provided with a groove matching the fixed block. The fixed block is located on the side of the corresponding second through hole close to the second core pulling seat, and the fixed block is provided with a limiting through hole along the corresponding core pulling direction for the forming column to pass through. The forming column is always opposite to the second through hole, and the forming column always slides in the limiting through hole.
[0020] By adopting the above technical solution, since the fixing block is arranged on the front mold, the positional relationship between the molding column and the front mold is further restricted after the molding column passes through the limiting through hole, thereby further reducing the positional deviation of the molding column.
[0021] Preferably, the limiting member also includes a spring, a slider and a ball. A groove is provided on the fixed block, the groove is located on the side of the limiting through hole close to the rear mold, and one end is connected to the limiting through hole; the slider slides in the groove, the ball rolls on the end of the slider close to the forming column, and the two ends of the spring are respectively arranged on the inner wall of the end of the groove away from the limiting through hole and on the slider; when the forming column passes through the limiting through hole, the ball is always pressed against the forming column.
[0022] By adopting the above technical solution, the spring can drive the ball to press against the forming column. When the forming column moves, it will drive the ball to rotate. Such an arrangement can further improve the stability of the forming column during movement.
[0023] The technical effects of this utility model are mainly reflected in the following aspects:
[0024] 1. In the case of core pulling and injection molding, the second driving member can drive the first core pulling seat to move, and the first core pulling seat drives the molding column to move, so that the core pulling or core loading operation can be automatically performed without the operator manually moving the molding column, which can facilitate the demoulding of the cover;
[0025] 2. The utility model sets a limiting member, which can limit the sliding of the molding column. If the sliding of the first core-pulling seat deviates, it is very likely to cause the molding column to tilt or move in a deviated position, causing the molding column to be inserted into the second through hole, resulting in the mold being unable to be used normally; the limiting member can reduce the probability of the above situation occurring. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the structure of the cover according to the embodiment of the present application.
[0027] Figure 2 It is a structural schematic diagram of a front injection mold in the related art.
[0028] Figure 3 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0029] Figure 4 It is a structural schematic diagram of the front mold and the core pulling mechanism in the mold closing state of an embodiment of the present application.
[0030] Figure 5 It is a structural schematic diagram of the front mold and the core pulling mechanism in the mold opening state of the embodiment of the present application.
[0031] Figure 6 is along Figure 4 Section view along line AA.
[0032] Figure 7 yes Figure 6 Enlarged view of point B in the middle.
[0033] Explanation of the reference numerals: 1. front mold; 11. second through hole; 2. rear mold; 3. first core-pulling mechanism; 31. first core-pulling column; 32. first core-pulling seat; 33. first core-pulling block; 4. second core-pulling mechanism; 41. second core-pulling column; 42. second core-pulling seat; 421. mounting groove; 43. forming column; 44. bolt; 5. ejection mechanism; 51. ejector plate; 52. ejector rod; 6. limiting member; 61. fixing block; 611. limiting through hole; 612. groove; 62. spring; 63. slider; 64. ball; 7. cover body; 71. connecting block; 711. first through hole; 72. cavity. DETAILED DESCRIPTION
[0034] The following is combined with Figure 1 , Figure 3-Figure 7 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.
[0035] The embodiment of the present application discloses a high-precision cover injection mold.
[0036] Reference Figure 1 , Figure 3-Figure 5 A high-precision cover injection mold of the present embodiment includes a front mold 1 and a rear mold 2. After the front mold 1 and the rear mold 2 are molded together, a molding cavity for molding a cover body 7 is formed. The mold also includes a first core pulling mechanism 3, a second core pulling mechanism 4 and an ejection mechanism 5. The first core pulling mechanism 3 includes a driving member 1, a first core pulling seat 32 and a first core pulling block 33 for molding the upper cavity 72 of the cover body 7. The first core pulling block 33 is fixedly arranged on the first core pulling seat 32. The first core pulling seat 32 slides in the front mold 1 along the corresponding core pulling direction. The driving member 1 is used to drive the second core pulling seat 42 to slide.
[0037] Reference Figure 1 , Figure 3-Figure 5 The second core pulling mechanism 4 includes a second driving member, a second core pulling seat 42 and a molding column 43 for molding the first through hole 711 on the cover body 7. The molding column 43 is detachably arranged on the second core pulling seat 42. The second core pulling seat 42 slides in the front mold 1 along the corresponding core pulling direction. The second driving member is used to drive the second core pulling seat 42 to slide. Among them, the core pulling directions of the first core pulling block 33 and the molding column 43 are perpendicular to the mold opening and closing direction. The ejection mechanism 5 is used to drive the cover body 7 to separate from the front mold 1.
[0038] Reference Figure 3-Figure 5 During core pulling and injection molding, the driving member 2 can drive the first core pulling seat 32 to move, and the first core pulling seat 32 drives the molding column 43 to move, which can automatically perform core pulling or core loading operations without the operator manually moving the molding column 43, which can facilitate the demoulding of the cover.
[0039] Reference Figure 3-Figure 5 The first driving member is a first core-pulling column 31, one end of which is fixed on the rear mold 2, the first core-pulling column 31 is tilted, and the first core-pulling column 31 slides on the first core-pulling seat 32 along the tilted direction. The second driving member is a second core-pulling column 41, one end of which is fixed on the rear mold 2, the second core-pulling column 41 is tilted, and the second core-pulling column 41 slides on the second core-pulling seat 42 along the tilted direction.
[0040] Reference Figure 3-Figure 5 When the mold is opened, the rear mold 2 drives the first core-pulling column 31 and the second core-pulling column 41 to move toward the side away from the front mold 1, the first core-pulling column 31 drives the first core-pulling seat 32 to move toward the side away from the cover body 7, and the second core-pulling column 41 also drives the second core-pulling seat 42 to move toward the side away from the cover body 7, thereby realizing automatic core pulling; when the mold is closed, the rear mold 2 drives the first core-pulling column 31 and the second core-pulling column 41 to move toward the side of the front mold 1, the first core-pulling column 31 drives the first core-pulling seat 32 to move toward the cover body 7, and the second core-pulling column 41 also drives the second core-pulling seat 42 to move toward the cover body 7, thereby realizing the first core-pulling block 33 and the molding column 43 are reset, and injection molding can continue.
[0041] Reference Figure 3-Figure 5 The protrusion of one end of the molding column 43 away from the second core-pulling seat 42 is set in a hemispherical shape. Since the molding column 43 needs to be inserted into the second through hole 11 on the front mold 1, the end of the molding column 43 inserted into the second through hole 11 is set in a hemispherical shape, which can play a guiding role during the insertion process and improve the probability of the molding column 43 being inserted into the second through hole 11.
[0042] Reference Figure 6The cross section of the forming column 43 is T-shaped, and a corresponding mounting through slot 421 is formed through the second core-pulling seat 42 . The short end of the forming column 43 is locked in the second core-pulling seat 42 by a bolt 44 .
[0043] Reference Figure 6 and Figure 7 A limiting member 6 is provided on the front mold 1 , and the limiting member 6 acts on the molding column 43 to limit the molding column 43 to always face the second through hole 11 on the front mold 1 during the movement.
[0044] Reference Figure 6 and Figure 7 The limiting member 6 can limit the sliding of the molding column 43. If the sliding of the first core-pulling seat 32 deviates, it is very likely that the molding column 43 will be lifted or the moving position will deviate, causing the molding column 43 to be inserted into the second through hole 11, resulting in the mold being unable to be used normally; the limiting member 6 can reduce the probability of the above situation occurring.
[0045] Reference Figure 6 and Figure 7 The limiting member 6 includes a fixed block 61, which is fixedly arranged on the front mold 1, and a groove matching the fixed block 61 is provided on the rear mold 2. The fixed block 61 is located on the side of the corresponding second through hole 11 close to the second core-pulling seat 42, and a limiting through hole 611 is provided on the fixed block 61 along the corresponding core-pulling direction for the forming column 43 to pass through. The forming column 43 always faces the second through hole 11, and the forming column 43 always slides in the limiting through hole 611.
[0046] Reference Figure 6 and Figure 7 Since the fixing block 61 is disposed on the front mold 1 , the positional relationship between the molding column 43 and the front mold 1 is further restricted after the molding column 43 passes through the limiting through hole 611 , thereby further reducing the positional deviation of the molding column 43 .
[0047] Reference Figure 6 and Figure 7 The limiting member 6 further includes a spring 62, a slider 63 and a ball 64. A groove 612 is provided on the fixing block 61. The groove 612 is located on the side of the limiting through hole 611 close to the rear mold 2, and one end is connected to the limiting through hole 611. The slider 63 slides in the groove 612, and the ball 64 rolls on the end of the slider 63 close to the molding column 43. The two ends of the spring 62 are respectively arranged on the inner wall of the end of the groove 612 away from the limiting through hole 611 and on the slider 63. When the molding column 43 passes through the limiting through hole 611, the ball 64 always presses against the molding column 43.
[0048] Reference Figure 6 and Figure 7The spring 62 can drive the ball 64 to press against the forming column 43. When the forming column 43 moves, the ball 64 will be driven to rotate. Such a setting can further improve the stability of the forming column 43 during movement.
[0049] Reference Figure 3 and Figure 5 The ejection mechanism 5 includes a top plate 51 and a push rod 52. The top plate 51 moves in a direction parallel to the mold opening and closing direction. The top plate 51 is generally driven by a cylinder. One end of the push rod 52 is fixed on the top plate 51, and the other end of the push rod 52 is used to eject the cover body 7 after molding.
[0050] Reference Figure 4 and Figure 5 , one mold can simultaneously injection mold a plurality of cover bodies 7, and the corresponding numbers of the first core-pulling mechanism 3, the second core-pulling mechanism 4 and the ejection mechanism 5 will also change.
[0051] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.
Claims
1. A high-precision cover injection mold, comprising a front mold (1) and a rear mold (2), wherein the front mold (1) and the rear mold (2) together form a molding cavity for molding a cover body (7), characterized in that: It also includes a first core pulling mechanism (3), a second core pulling mechanism (4) and an ejection mechanism (5), wherein the first core pulling mechanism (3) includes a driving member 1, a first core pulling seat (32) and a first core pulling block (33) for forming the upper cavity (72) of the cover body (7), the first core pulling block (33) is fixedly arranged on the first core pulling seat (32), the first core pulling seat (32) slides in the front mold (1) along the corresponding core pulling direction, and the driving member 1 is used to drive the second core pulling seat (42) to slide; The second core-pulling mechanism (4) comprises a second driving member, a second core-pulling seat (42) and a molding column (43) for molding a first through hole (711) on a cover body (7); the molding column (43) is detachably arranged on the second core-pulling seat (42); the second core-pulling seat (42) slides in the front mold (1) along a corresponding core-pulling direction; the second driving member is used to drive the second core-pulling seat (42) to slide; and the ejection mechanism (5) is used to drive the cover body (7) to separate from the front mold (1).
2. A high-precision cover injection mold according to claim 1, characterized in that: The first driving member is a first core-pulling column (31), one end of which is fixed on the rear mold (2), the first core-pulling column (31) is arranged in an inclined manner, and the first core-pulling column (31) slides on the first core-pulling seat (32) along the inclined direction; The second driving member is a second core-pulling column (41), one end of which is fixed on the rear mold (2), the second core-pulling column (41) is arranged in an inclined manner, and the second core-pulling column (41) slides on the second core-pulling seat (42) along the inclined direction.
3. A high-precision cover injection mold according to claim 1, characterized in that: The end of the molding column (43) away from the second core-pulling seat (42) is convex and is arranged in a hemispherical shape.
4. A high-precision cover injection mold according to claim 1, characterized in that: The cross section of the molding column (43) is T-shaped, and a corresponding installation through groove (421) is provided through the second core-pulling seat (42). The short end of the molding column (43) is locked in the second core-pulling seat (42) by a bolt (44).
5. The high-precision cover injection mold according to claim 1, characterized in that: The front mold (1) is provided with a limiting member (6), and the limiting member (6) acts on the molding column (43) and is used to limit the molding column (43) to always face the second through hole (11) on the front mold (1) during the movement process.
6. A high-precision cover injection mold according to claim 5, characterized in that: The limiting member (6) comprises a fixed block (61), the fixed block (61) is fixedly arranged on the front mold (1), the rear mold (2) is provided with an embedding groove matching the fixed block (61), the fixed block (61) is located on the side of the corresponding second through hole (11) close to the second core-pulling seat (42), the fixed block (61) is provided with a limiting through hole (611) for the forming column (43) to pass through along the corresponding core-pulling direction, the forming column (43) is always opposite to the second through hole (11), and the forming column (43) always slides in the limiting through hole (611).
7. A high-precision cover injection mold according to claim 6, characterized in that: The limiting member (6) further comprises a spring (62), a slider (63) and a ball (64); a groove (612) is provided on the fixing block (61); the groove (612) is located on a side of the limiting through hole (611) close to the rear mold (2), and one end of the groove (612) is connected to the limiting through hole (611); the slider (63) slides in the groove (612), and the ball (64) rolls on an end of the slider (63) close to the molding column (43); the two ends of the spring (62) are respectively arranged on the inner wall of an end of the groove (612) away from the limiting through hole (611) and on the slider (63); when the molding column (43) passes through the limiting through hole (611), the ball (64) is always pressed against the molding column (43).