Injection mold capable of preventing slide from retreating
By using the combination structure of T-shaped inserts and elastic components, the problem of backward displacement of the slide seat in injection molds was solved, thereby improving product quality, extending mold life, and reducing production costs.
Patent Information
- Application Number
- CN202520073596.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-13
AI Technical Summary
Existing injection molds are prone to displacement of the slide seat during injection, resulting in quality problems such as burrs and flash on the product. Furthermore, existing solutions are either costly or structurally complex, and have limited applicability.
The system employs a combination structure of T-shaped inserts, elastic elements, and a spade base. The T-shaped inserts slide in the T-slots to drive the slide seat, while the elastic elements abut against the slide seat during injection molding to prevent it from shifting backward. The detachable T-shaped inserts facilitate maintenance.
It effectively prevents the slide seat from moving backward, improves product yield, reduces product defects, extends the service life of the slide seat, and reduces maintenance costs.
Smart Images
Figure CN223918506U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold with anti-retrograde positioning for the slide. Background Technology
[0002] Currently, some injection molds on the market use hydraulic cylinders to drive the slide block to slide back and forth on the lower mold plate. During injection molding, the slide block is subjected to injection pressure, and the hydraulic cylinder is insufficient to counteract this pressure. This eventually causes the slide block to shift backward, and the injected material overflows from the PL surface of the mold. Over time, this can easily lead to problems such as burrs and flash on the product, affecting its quality.
[0003] In existing technologies, larger hydraulic cylinders or additional sliding and anti-reverse structures are generally used to solve the above problems. However, using larger hydraulic cylinders undoubtedly increases equipment costs and results in lower cost-effectiveness; while existing sliding and anti-reverse structures are relatively complex in structure and have limited application conditions and scope.
[0004] Therefore, it is necessary to provide an injection mold with anti-retrograde positioning to solve the above-mentioned technical problems. Utility Model Content
[0005] The purpose of this utility model is to provide an injection mold with anti-retrograde slide, which aims to solve or at least partially solve the shortcomings of the above-mentioned background technology. Its structure is simple and can prevent the slide seat from regressing during the injection process, thereby preventing defects such as burrs and flash from the product and improving the product yield.
[0006] This utility model provides an injection mold for preventing slide displacement, including an upper mold plate and a lower mold plate. A slide seat is slidably mounted on the lower mold plate. The slide seat, upper mold plate, and lower mold plate together form a cavity for molding the product. The upper mold plate is provided with a spade base for driving the slide seat to slide. A guide slope is provided on the inward-facing side of the spade base. A T-shaped insert is detachably protruded from the guide slope of the spade base. The T-shaped insert is elastically connected to the spade base through an elastic member. The two ends of the elastic member abut against the T-shaped insert and the spade base, respectively. The slide seat is provided with a T-slot that mates with the T-shaped insert and a first slope that mates with the guide slope. The T-shaped insert is provided with a first abutting surface, and the T-slot is provided with a second abutting surface that mates with the first abutting surface. When the mold is closed, the T-shaped insert moves downward along the T-slot to push the slide seat to slide inward. During injection, the guide slope abuts against the first slope, the first abutting surface abuts against the second abutting surface, and the elastic member is in a contracted state.
[0007] Furthermore, the inclination of the guiding slope, the inclination of the first slope, the inclination of the first contact surface, and the inclination of the second contact surface are all kept consistent.
[0008] Furthermore, the T-shaped insert is mounted on the shovel base by fasteners, and the T-shaped insert can slide back and forth along the extension direction of the fasteners.
[0009] Furthermore, several elastic elements are arranged between the T-shaped insert and the shovel base and are symmetrically distributed around the fastener.
[0010] Furthermore, the fastener has a fixed end, a limiting end, and a connecting part that connects the fixed end and the limiting end. The fixed end of the fastener is mounted on the shovel base, the T-shaped insert is slidably disposed along the connecting part, and the limiting end is used to prevent the T-shaped insert from detaching from the fastener.
[0011] Furthermore, the T-shaped insert has a through hole corresponding to the fastener. The through hole has a limiting hole and a movable hole. The limiting hole and the movable hole are coaxially connected. The connecting part of the fastener can move within the limiting hole and the movable hole. The limiting end of the fastener is movably set within the limiting hole.
[0012] Furthermore, the diameter of the limiting hole is larger than the diameter of the movable hole, and a limiting surface is provided at the connection between the limiting hole and the movable hole. The limiting surface is used to restrict the limiting end from entering the movable hole.
[0013] Furthermore, the T-shaped insert and the corresponding elastic element of the shovel base are respectively recessed with a first mounting hole and a second mounting hole, and the two ends of the elastic element abut against the bottom wall of the first mounting hole and the bottom wall of the second mounting hole, respectively.
[0014] Furthermore, the shovel base has a mounting groove recessed on the guide slope of the T-shaped insert, and the T-shaped insert is installed in the mounting groove.
[0015] Furthermore, the outer side of the shovel base is provided with a backhoe slope, and the lower template is provided with a second slope that cooperates with the backhoe slope.
[0016] The injection mold for preventing slide displacement provided by this utility model has a simple structure. Through the cooperation of the T-shaped insert and the T-slot, the shovel base drives the slide seat to slide back and forth on the lower mold plate. Through the cooperation of the T-shaped insert, the elastic element, and the shovel base, the T-shaped insert always abuts against the slide seat during the injection process, and the slide seat is always subjected to a thrust towards the cavity. This prevents the slide seat from shifting backward during mold injection, thereby preventing defects such as burrs and flashes in the product and improving product yield. In addition, the T-shaped insert also reduces the impact force on the slide seat during mold closing, thereby slowing down the wear of the slide seat and extending its service life. The detachable design of the T-shaped insert makes maintenance and replacement of the T-shaped insert convenient, thus extending the service life of the mold and reducing production costs. Attached Figure Description
[0017] Figure 1 This is a cross-sectional view of an injection mold for preventing slippage according to the present invention.
[0018] Figure 2 for Figure 1 A schematic diagram of the T-shaped insert is shown.
[0019] Figure 3 for Figure 1 The diagram shows a fastener.
[0020] Figure 4 for Figure 1 The diagram shows the shovel base. Figure 1 .
[0021] Figure 5 for Figure 1 The diagram shows the shovel base. Figure 2 .
[0022] Figure 6 for Figure 1 The diagram shows the row position. Figure 1 .
[0023] Figure 7 for Figure 1 Schematic diagram of row position shown Figure 2 .
[0024] Figure 8 This is a partial schematic diagram of an injection mold for preventing slippage of the present invention in the mold-opening state.
[0025] Figure 9 This is a partial schematic diagram of an injection mold for preventing slippage of the present invention during mold closing.
[0026] Figure 10 This is a partial schematic diagram of an injection mold for preventing slippage during injection molding, according to the present invention.
[0027] Figure 11 for Figure 1 A magnified diagram of point A in the middle. Detailed Implementation
[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0029] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0030] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.
[0031] Please see Figure 1 , Figure 2 , Figures 4-7 , Figure 9 and Figure 10 An injection mold for preventing slide displacement includes an upper mold plate 10 and a lower mold plate 20. A slide seat 30 is slidably disposed on the lower mold plate 20. The slide seat 30, the upper mold plate 10, and the lower mold plate 20 together form a cavity 40 for molding products.
[0032] The upper template 10 is provided with a shovel base 11 for driving the sliding seat 30. The shovel base 11 has a guide slope 111 on the inner side. The shovel base 11 is detachably provided with a T-shaped insert 12 on the guide slope 111. The T-shaped insert 12 is elastically connected to the shovel base 11 through an elastic member 13. The two ends of the elastic member 13 abut against the T-shaped insert 12 and the shovel base 11 respectively.
[0033] The position seat 30 is provided with a T-groove 31 that mates with the T-shaped insert 12 and a first inclined surface 32 that mates with the guide inclined surface 111.
[0034] The T-shaped insert 12 is provided with a first abutting surface 121, and the T-shaped groove 31 is provided with a second abutting surface 311 that mates with the first abutting surface 121.
[0035] During mold closing, the T-shaped insert 12 moves downward along the T-slot 31 to push the slide seat 30 to slide inward; during injection molding, the guide slope 111 abuts against the first slope 32, the first abutting surface 121 abuts against the second abutting surface 311, and the elastic element 13 is in a contracted state.
[0036] As described above, the injection mold for preventing slide displacement provided by this utility model embodiment has a simple structure. Through the cooperation of the T-shaped insert 12 and the T-shaped groove 31, the shovel base 11 drives the slide seat 30 to slide back and forth on the lower mold plate 20. Through the cooperation of the T-shaped insert 12, the elastic element 13, and the shovel base 11, the T-shaped insert 12 always abuts against the slide seat 30 during the injection process, and the slide seat 30 is always subjected to a pushing force towards the cavity 40, which prevents the slide seat 30 from moving backward during mold injection, thereby preventing defects such as burrs and flash from the product and improving the product yield. In addition, the T-shaped insert 12 also reduces the impact force on the slide seat 30 during mold closing, thereby reducing the wear of the slide seat 30 and extending its service life. The detachable design of the T-shaped insert 12 makes maintenance and replacement of the T-shaped insert 12 convenient, thereby extending the service life of the mold and reducing production costs.
[0037] Please see Figure 2 , Figure 5 and Figure 7 The inclinations of the guide slope 111, the first slope 32, the first abutment surface 121, and the second abutment surface 311 are all kept consistent. On the one hand, this arrangement ensures that the T-shaped insert 12 experiences balanced force when abutting the second abutment surface 311, achieving a balanced thrust applied by the T-shaped insert 12 to the slide seat 30, thus achieving a better anti-displacement effect. On the other hand, this arrangement improves the smoothness and continuity of movement between the shovel base 11 and the slide seat 30, making the sliding of the slide seat 30 on the lower template 20 more stable. At the same time, it also reduces wear between the guide slope 111 and the first slope 32, and between the first abutment surface 121 and the second abutment surface 311.
[0038] Please see Figure 5 and Figures 8-10 The T-shaped insert 12 is mounted on the shovel base 11 by a fastener 14. The T-shaped insert 12 can slide back and forth along the extension direction of the fastener 14. The fastener 14 serves to prevent the T-shaped insert 12 from detaching from the shovel base 11 and to guide the T-shaped insert 12. It cooperates with the elastic member 13 to achieve an elastic connection between the T-shaped insert 12 and the shovel base 11. At the same time, the fastener 14 can improve the stability of the T-shaped insert 12 during reciprocating sliding along the extension direction of the fastener 14.
[0039] More specifically, the axis of fastener 14 is perpendicular to the guide ramp 111.
[0040] Please see Figure 1 , Figure 2 and Figure 5Several elastic elements 13 are disposed between the T-shaped insert 12 and the shovel base 11 and are symmetrically distributed around the fastener 14. The elastic elements 13 are springs. The symmetrical distribution of the elastic elements 13 ensures that the thrust exerted by the T-shaped insert 12 on the sliding seat 30 is balanced, achieving a better anti-displacement effect. In this embodiment, two elastic elements 13 are disposed between the T-shaped insert 12 and the shovel base 11.
[0041] More specifically, the T-shaped insert 12 and the shovel base 11 are respectively recessed with a first mounting hole 122 and a second mounting hole 112 corresponding to the elastic element 13. The two ends of the elastic element 13 abut against the bottom wall of the first mounting hole 122 and the bottom wall of the second mounting hole 112, respectively. Both the first mounting hole 122 and the second mounting hole 112 serve to prevent the elastic element 13 from shifting.
[0042] Please see Figure 2 , Figure 3 and Figure 5 The fastener 14 has a fixed end 141, a limiting end 143, and a connecting portion 142 connecting the fixed end 141 and the limiting end 143. The fixed end 141 of the fastener 14 is mounted on the shovel base 11, wherein the shovel base 11 has a fixing hole 113 corresponding to the fixed end 141, and the fixed end 141 is screwed and fixed in the fixing hole 113. The T-shaped insert 12 is slidably disposed along the connecting portion 142, and the limiting end 143 is used to prevent the T-shaped insert 12 from disengaging from the fastener 14.
[0043] Furthermore, the T-shaped insert 12 has a through hole 123 corresponding to the fastener 14. The through hole 123 has a limiting hole 1231 and a movable hole 1232, which are coaxially connected. The connecting portion 142 of the fastener 14 can move within the limiting hole 1231 and the movable hole 1232. The limiting end 143 of the fastener 14 is movably disposed within the limiting hole 1231. The limiting hole 1231 and the limiting end 143 cooperate to prevent the T-shaped insert 12 from disengaging from the shovel base 11. The diameter of the limiting end 143 is smaller than the diameter of the limiting hole 1231, and the diameter of the connecting portion 142 is smaller than the diameter of the movable hole 1232.
[0044] Furthermore, the diameter of the limiting hole 1231 is larger than the diameter of the movable hole 1232. A limiting surface 1233 is provided at the connection between the limiting hole 1231 and the movable hole 1232. The limiting surface 1233 is used to restrict the limiting end 143 from entering the movable hole 1232, thereby preventing the T-shaped insert 12 from detaching from the shovel base 11.
[0045] Please see Figure 5The shovel base 11 has a mounting groove 114 recessed on the guide slope 111 corresponding to the T-shaped insert 12, and the T-shaped insert 12 is installed in the mounting groove 114. The mounting groove 114 can improve the stability of the elastic movement of the T-shaped insert 12 on the shovel base 11, thereby improving the anti-displacement effect of the sliding seat 30.
[0046] Please see Figure 5 and Figure 11 The outer side of the shovel base 11 is provided with a backhoe slope 115, and the lower mold plate 20 is provided with a second slope 21 that cooperates with the backhoe slope 115. When the mold is closed, the second slope 21 abuts against the backhoe slope 115, which supports and guides the shovel base 11, guiding the shovel base 11 to fall to the accurate position and preventing the shovel base 11 from shifting, further ensuring the anti-displacement effect of the slide seat 30.
[0047] Furthermore, the inclination of the backhoe slope 115 is consistent with the inclination of the second slope 21. This not only makes the fit between the backhoe base 11 and the lower template 20 smoother and more precise, but also effectively reduces wear between the two, increases the service life of the backhoe base 11 and the lower template 20, and further reduces maintenance costs.
[0048] Please see Figure 4 and Figure 10 A wear-resistant plate 15 is detachably embedded on the guide slope 111 of the shovel base 11. During injection molding, the wear-resistant plate 15 abuts against the first slope 32 of the slide seat 30.
[0049] The working process of this injection mold for preventing displacement:
[0050] Please see Figure 8 In the mold-open state, the elastic element 13 is in the extended state, and the limiting end 143 of the fastener 14 abuts against the limiting surface 1233.
[0051] Please see Figure 9 When the mold is closed, the elastic element 13 is in a semi-contracted state under force. The T-shaped insert 12 moves downward along the T-shaped groove 31 and gradually approaches the shovel base 11. The first abutting surface 121 abuts against the second abutting surface 311 to push the slide seat 30 to slide inward.
[0052] Please see Figure 10 During injection molding, the elastic element 13 is in a contracted state, the first abutting surface 121 continuously abuts against the second abutting surface 311, and the guide slope 111 abuts against the first slope 32.
[0053] The advantages of the injection mold with anti-retrograde positioning provided by this utility model include:
[0054] (1) Simple structure.
[0055] (2) To prevent the slide seat 30 from shifting backward during mold injection and improve product yield.
[0056] (3) The T-type insert 12 is easy to repair and replace, thus extending the service life of the mold and reducing production costs.
[0057] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. An injection mold for preventing slide displacement, comprising an upper mold plate (10) and a lower mold plate (20), wherein a slide seat (30) is slidably disposed on the lower mold plate (20), and the slide seat (30), the upper mold plate (10), and the lower mold plate (20) together form a cavity (40) for molding a product, characterized in that, The upper template (10) is provided with a shovel base (11) for driving the sliding seat (30) to slide. The shovel base (11) has a guide slope (111) on the inner side. The shovel base (11) is detachably provided with a T-shaped insert (12) on the guide slope (111). The T-shaped insert (12) is elastically connected to the shovel base (11) through an elastic member (13). The two ends of the elastic member (13) abut against the T-shaped insert (12) and the shovel base (11) respectively. The sliding seat (30) is provided with a T-shaped groove (31) that cooperates with the T-shaped insert (12) and a first slope (32) that cooperates with the guide slope (111). The T-shaped insert (12) is provided with a first abutting surface (121), and the T-shaped groove (31) is provided with a second abutting surface (311) that cooperates with the first abutting surface (121). When the mold is closed, the T-shaped insert (12) moves downward along the T-shaped groove (31) to push the slide seat (30) to slide inward; during injection molding, the guide slope (111) abuts against the first slope (32), the first abutting surface (121) abuts against the second abutting surface (311), and the elastic element (13) is in a contracted state.
2. The injection mold for preventing slide displacement as described in claim 1, characterized in that, The inclination of the guide slope (111), the inclination of the first slope (32), the inclination of the first abutting surface (121), and the inclination of the second abutting surface (311) are all consistent.
3. The injection mold for preventing slide displacement as described in claim 1, characterized in that, The T-shaped insert (12) is mounted on the shovel base (11) by a fastener (14), and the T-shaped insert (12) can slide back and forth along the extension direction of the fastener (14).
4. The injection mold for preventing slide displacement as described in claim 3, characterized in that, Several of the elastic elements (13) are disposed between the T-shaped insert (12) and the shovel base (11) and are symmetrically distributed with the fastener (14) as the center.
5. The injection mold for preventing slide displacement as described in claim 3, characterized in that, The fastener (14) has a fixed end (141), a limiting end (143) and a connecting part (142) connecting the fixed end (141) and the limiting end (143). The fixed end (141) of the fastener (14) is mounted on the shovel base (11). The T-shaped insert (12) is slidably disposed along the connecting part (142). The limiting end (143) is used to prevent the T-shaped insert (12) from detaching from the fastener (14).
6. The injection mold for preventing slide displacement as described in claim 5, characterized in that, The T-shaped insert (12) has a through hole (123) corresponding to the fastener (14). The through hole (123) has a limiting hole (1231) and a movable hole (1232). The limiting hole (1231) and the movable hole (1232) are coaxially connected. The connecting part (142) of the fastener (14) can move in the limiting hole (1231) and the movable hole (1232). The limiting end (143) of the fastener (14) is movably disposed in the limiting hole (1231).
7. The injection mold for preventing slide displacement as described in claim 6, characterized in that, The diameter of the limiting hole (1231) is larger than the diameter of the movable hole (1232). A limiting surface (1233) is provided at the connection between the limiting hole (1231) and the movable hole (1232). The limiting surface (1233) is used to restrict the limiting end (143) from entering the movable hole (1232).
8. The injection mold for preventing slide displacement as described in claim 1, characterized in that, The T-shaped insert (12) and the shovel base (11) are respectively recessed with a first mounting hole (122) and a second mounting hole (112) corresponding to the elastic member (13). The two ends of the elastic member (13) abut against the bottom wall of the first mounting hole (122) and the bottom wall of the second mounting hole (112).
9. The injection mold for preventing slide displacement as described in claim 1, characterized in that, The shovel base (11) is provided with a mounting groove (114) on the guide slope (111) corresponding to the T-shaped insert (12), and the T-shaped insert (12) is installed in the mounting groove (114).
10. The injection mold for preventing slide displacement as described in claim 1, characterized in that, The shovel base (11) has an outward-facing anti-shovel slope (115) on one side, and the lower template (20) has a second slope (21) that cooperates with the anti-shovel slope (115).