Injection mold double-cap closing equipment
The double-cap closing equipment using injection molds utilizes a push plate and roller assembly to slide along a guide rail to achieve rapid closing of double-caps, solving the problems of low closing efficiency and high cost in existing technologies, and improving the quality and stability of closing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 四川省宜宾普什模具有限公司
- Filing Date
- 2025-05-19
- Publication Date
- 2026-06-02
Smart Images
Figure CN224311044U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding technology, specifically to a double-locking cap closing device for injection molds. Background Technology
[0002] Injection-molded caps are commonly installed on bottle-shaped structures such as various kitchen and bath products. They generally consist of a cap body and a cover plate, with the cover plate capable of reciprocating relative to the cap body. During the injection molding process, both the cap body and cover plate are in the open state. Before assembling the cap and bottle body, the cover plate needs to be pre-attached to the cap body. To accommodate various applications, such as soy sauce bottle caps with large openings that easily pour out too much at once, a smaller second cover plate can be opened in the opposite direction on the cover plate. Users can choose which cover plate to open based on their needs. In the prior art, taking the patent document with publication number CN107756726A as an example, the capping head is rotated to press down the cover plate to close the cap. The above method is difficult to close double-lock caps. Utility Model Content
[0003] The present invention aims to provide a double-locking cap closing device for injection molds, which can provide a cap closing device that can quickly close double-locking caps.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a double-locking cover device for injection molds, comprising a support frame unit and a pushing unit disposed on the support frame unit. The support frame unit is provided with a guide rail. The pushing unit includes a push plate, a guide part that slides with the guide rail, and a power part that drives the push plate to slide back and forth. At least one roller fixing seat is installed on the push plate. The ends of the roller fixing seats are rotatably provided with rollers that can contact the cover plate. The push plate is installed on the guide part. The power part drives the push plate and the rollers to slide along the guide rail in the forward direction to close one cover plate and slide in the reverse direction to close the other cover plate.
[0005] The beneficial effects of this plan are:
[0006] 1. Improve the efficiency of closing the lid.
[0007] In this technical solution, a guide part that slides with the guide rail is set up, and a power part is set up as the power source to drive the push plate to slide back and forth. After the push plate is installed on the guide part, the push plate and the roller can slide along the guide rail. The same push plate and roller assembly is used to close two cover plates in opposite directions. The forward sliding roller completes the closing of the main cover plate, and the reverse sliding roller completes the closing of the other cover plate. The reciprocating sliding action is continuous and the interval is short, which can quickly complete the closing operation.
[0008] 2. Low operating cost.
[0009] The two cover plates can be closed by using the same power source to perform a reciprocating sliding process, and there is no need to adjust or replace the mold parts. Compared with using two sets of closing tools, this can significantly reduce processing costs.
[0010] 3. The surface quality of the lid is good, and the rework rate is low.
[0011] By setting the rollers to contact the cover plate, the frictional resistance is small, avoiding scratches or indentations on the cover plate surface; by setting guide rails to guide the cover plate, the stability of the movement trajectory is ensured, thereby ensuring that the rollers can make stable contact with the cover plate, ensuring the cover closing rate and reducing the rework rate in the later stages.
[0012] Preferably, as an improvement, the guide rail includes a first horizontal segment, a flange segment, and a second horizontal segment connected in sequence. The second horizontal segment is higher than the first horizontal segment, and the flange segment has a raised arc trajectory. The highest point of the flange segment 7 is higher than the second horizontal segment, and the end of the second horizontal segment is close to the push plate.
[0013] The beneficial effects are as follows: the second horizontal section is higher than the first horizontal section. When the push plate slides along the first horizontal section, the roller is lower than the cover plate. When it slides to the flange section, it drives the roller to rise and flip the cover plate. The push plate passes through the second horizontal section and the roller rolls over the surface of the cover plate to close it. Then the roller slides in the opposite direction and contacts the surface of the second cover plate to close the second cover plate.
[0014] Preferably, as an improvement, the support frame unit includes two symmetrically arranged support plates and a fixing platform. The fixing platform is located on one side of the two support plates and is fixedly connected to both support plates. Guide rails are symmetrically arranged on the opposite surfaces of the two support plates.
[0015] The beneficial effects are as follows: the symmetrical arrangement of the two support plates makes the load of the push unit evenly distributed on the support frame unit. The fixed platform is integrally connected with the two support plates to form a rigid frame, ensuring stable support and helping to improve the stability of the push plate closing. The guide rails are respectively installed on the opposite surfaces of the two support plates, and the guide part is simultaneously fitted into these two guide rails to avoid the sliding, tilting or swaying that may occur with a single guide rail, ensuring that the push plate slides precisely along the guide rails.
[0016] Preferably, as an improvement, the guide unit includes a guide plate and a guide post assembly. The guide plate is rotatably provided with rotating bearings on both sides that slide with the guide rail. The guide post assembly includes several guide posts whose two ends are fixedly connected to the guide plate and the push plate, respectively. The pushing unit also includes a limiting part, which includes a floating block that can only move in the vertical direction. The guide posts can slide horizontally relative to the floating block.
[0017] The beneficial effects are as follows: by setting the rotating bearing to cooperate with the guide rail, the sliding resistance of the guide plate is reduced, making the sliding of the guide plate smoother. The floating block serves as the vertical support of the guide column, and the floating block can only move in the vertical direction. The guide column can slide horizontally relative to the floating block. The floating block can limit the guide column, so that the push plate at both ends of the guide column and the guide plate move up and down synchronously along the guide rail, avoiding the problem of poor contact between the roller and the cover plate caused by the tilt of both ends of the guide column. The above settings can ensure that the sliding trajectory of the push plate is synchronized with the guide rail.
[0018] Preferably, as an improvement, the limiting part further includes a limiting post group, which includes a plurality of limiting posts that pass through the fixed platform and can slide longitudinally relative to it, and one end of each limiting post is fixedly connected to the floating block.
[0019] The beneficial effect is that the above settings can limit the floating block, making it only able to float up and down.
[0020] Preferably, as an improvement, the floating block is provided with guide sleeves of the same number as the guide posts, and the guide posts pass through the guide sleeves to achieve a sliding connection.
[0021] The beneficial effects are as follows: the guide sleeve and guide post work together to ensure the coaxiality of the guide sleeve and guide post, thereby ensuring the horizontality of the guide shaft reciprocating and sliding, and further improving the synchronization and accuracy of the push plate movement; as a sliding pair, the sleeve and guide post can withstand the friction in repeated reciprocating motion, reduce direct metal collision and wear, and at the same time reduce the sliding resistance of the guide post, making the sliding smoother, improving the stability of operation and the comfort of use.
[0022] Preferably, as an improvement, it further includes a distance detection unit, which includes a first distance sensor group and at least one second distance sensor group. Both the first and second distance sensor groups include a moving part and a reference part disposed on the floating block. The moving part of the first distance sensor group is disposed on the push plate, and the moving part of the second distance sensor group is disposed on the guide plate.
[0023] The beneficial effects are as follows: the first distance sensor group is used to detect whether the push plate has successfully reset after completing the closing operation, and the second distance sensor group is used to detect the sliding distance of the guide plate, which can be used to detect whether the guide plate has completed the sliding stroke, ensuring the complete closing stroke. The dual confirmation improves the reliability of the equipment.
[0024] Preferably, as an improvement, the power unit is a cylinder fixed on the floating block, and the telescopic end of the cylinder passes through the floating block and is fixedly connected to the push plate.
[0025] Preferably, as an improvement, the surface of the fixed platform relative to the floating block is provided with an adjusting pad for supporting the floating block, and the surface of the floating block relative to the push plate is provided with a hydraulic shock absorber.
[0026] The beneficial effects are as follows: the adjusting pad is placed between the fixed platform and the floating block, and the initial height of the floating block can be accurately set by changing the thickness of the pad or adjusting the number of pads, ensuring that the floating block works within the optimal height range and improving the guiding synchronization accuracy; the hydraulic shock absorber shares the impact energy, reduces the wear of the push plate, and extends the service life of the entire closing mechanism.
[0027] Preferably, as an improvement, each roller fixing seat includes a connecting seat connected to the push plate, and each connecting seat has two supporting seats fixed on it. Each of the two supporting seats has a rotating hole at the end away from the connecting seat that is rotatably connected to the roller, and there is a gap between the two supporting seats for the second cover plate to pass through.
[0028] The beneficial effects are as follows: the two support seats support the roller, making it less likely to dislodge or wobble when subjected to the pressure of closing the cover. The gap between the support seats is a reserved channel for the second cover plate. When sliding in the forward direction, the gap can be used to accommodate the second cover plate. When the roller slides in the reverse direction, it can smoothly contact the second cover plate and press it together. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0030] Figure 2 This is a schematic diagram of the disassembled structure of an embodiment of the present utility model;
[0031] Figure 3 This is a schematic diagram of the split structure of the driving unit in an embodiment of the present utility model;
[0032] Figure 4 This is a detailed view of the roller fixing seat according to an embodiment of the present utility model;
[0033] Figure 5 This is a schematic diagram of the guide rail structure according to an embodiment of the present utility model;
[0034] Figure 6 This is a schematic diagram of the motion trajectory of the roller in an embodiment of the present invention;
[0035] Figure 7 This is a schematic diagram of another motion trajectory of the roller in an embodiment of this utility model.
[0036] The reference numerals in the accompanying drawings include: guide rail 1, push plate 2, roller fixing seat 3, roller 4, first horizontal section 5, flange section 6, second horizontal section 7, moving part 8, first cover plate 9, second cover plate 10, support plate 11, fixed platform 12, guide plate 13, rotating bearing 14, power unit 15, guide column 16, floating block 17, guide sleeve 18, limit column 19, adjusting pad 20, hydraulic shock absorber 21, connecting seat 22, support seat 23, reinforcing rib 24, reference part 25, and moving part 8. Detailed Implementation
[0037] The following detailed description is provided through specific implementation methods and examples:
[0038] The preferred embodiments of this utility model are basically as shown in the appendix. Figure 1-7 As shown, Figure 1 and Figure 2 The double-cap closing device for injection molds shown includes a support frame unit and a pushing unit mounted on the support frame unit. The support frame unit has a guide rail 1. The pushing unit includes a push plate 2, a guide portion that slides along the guide rail 1, and a power unit 15 that drives the push plate 2 to slide back and forth. At least one roller fixing seat 3 is mounted on the push plate 2. Each end of the roller fixing seat 3 is rotatably equipped with a roller 4 that can contact the cap plate. The push plate 2 is mounted on the guide portion. The power unit 15 drives the push plate 2 and the roller 4 to slide along the guide rail 1 in the forward direction to close the cap plate, and in the reverse direction to close the cap plate. There are various ways to close the two cover plates in the above manner. For example, the roller 4 can be set as a cam shaft, and the two cover plates can be closed by the reciprocating rotation of the cam shaft. In order to simplify the structure and improve the stability of the closure, the preferred embodiment adopted by this utility model is that the guide rail 1 includes a first horizontal section 5, a flange section 6 and a second horizontal section 7 connected in sequence. The second horizontal section 7 is higher than the first horizontal section 5. The flange section 6 is a raised arc trajectory and the highest point of the flange section 6 is higher than the second horizontal section 7. The end of the second horizontal section 7 is close to the push plate 2.
[0039] In this technical solution, a guide part that slides with the guide rail 1 is provided, and a power unit 15 is provided as the power source to drive the push plate 2 to slide back and forth. After the push plate 2 is installed on the guide part, the push plate 2 and the roller 4 can slide along the guide rail 1. Two cover plates in opposite directions, including a first cover plate 9 and a second cover plate 10, are closed using the same push plate 2 and roller 4 assembly. The first cover plate 9 is closed by sliding the roller 4 in the forward direction, and the second cover plate 10 is closed by sliding and rolling in the reverse direction. The reciprocating sliding action is continuous and the interval is short, which can quickly complete the cover closing operation. Moreover, the cover closing operation of the two cover plates can be completed by using the same power source for the reciprocating sliding process, and there is no need to adjust or replace the mold components. Compared with using two sets of cover closing tools, the processing cost can be significantly reduced. By setting the roller 4 to contact the cover plate, the frictional resistance is small, avoiding scratches or indentations on the surface of the cover plate. Figure 5 As shown in the diagram, in this technical solution, the second horizontal section 7 of the guide rail 1 is higher than the first horizontal section 5. When the push plate 2 slides along the first horizontal section 5, the sliding trajectory of the roller 4 is as follows: Figure 6 and Figure 7As shown, the roller 4 is lower than the cover plate. When it slides to the flange section 6, it drives the roller 4 to rise. After the roller 4 contacts the open cover plate surface, it flips the first cover plate 9 so that the first cover plate 9 flips to contact the cover body. The push plate 2 passes through the second horizontal section 7 and the roller 4 rolls over the surface of the first cover plate 9 to close it. Then the roller 4 slides in the opposite direction and contacts the surface of the second cover plate 10 to close the second cover plate 10.
[0040] To ensure a simple, reliable structure and ease of assembly, the preferred embodiment of this invention is as follows: Figure 2 As shown, the support frame unit includes two symmetrically arranged support plates 11 and a fixed platform 12. The fixed platform 12 is located on one side of the two support plates 11 and is fixedly connected to both support plates 11. The guide rails 1 are symmetrically arranged on the opposite surfaces of the two support plates 11. The symmetrical arrangement of the two support plates 11 makes the load of the pushing unit evenly distributed on the support frame unit. The fixed platform 12 is integrally connected with the two support plates 11 to form a rigid frame, providing stable support and helping to improve the stability of the push plate 2 closing the cover. The guide rails 1 are respectively installed on the opposite surfaces of the two support plates 11. The guide part is simultaneously fitted into these two guide rails 1 to avoid the possible sliding tilt or swaying of a single guide rail 1, and to ensure that the push plate 2 slides accurately along the guide rail 1.
[0041] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention includes a guide plate 13 and a guide post assembly. The guide plate 13 and the guide rail 1 can have various sliding fit methods, such as a slide rod inserting into a slide groove. To ensure smooth sliding, such as... Figure 3As shown, this utility model employs a guide plate 13 with rotating bearings 14 on both sides that slide in cooperation with the guide rail 1. The guide column assembly includes several guide columns 16 whose two ends are respectively fixedly connected to the guide plate 13 and the push plate 2. In this utility model, two guide columns 16 are provided and symmetrically distributed on both sides of the guide plate 13. The pushing unit also includes a limiting part, which includes a floating block 17 that can only move in the vertical direction. The guide columns 16 can slide horizontally relative to the floating block 17. By setting the rotating bearings 14 to cooperate with the guide rail 1, the guide height is reduced. The sliding resistance of the guide plate 13 makes the sliding of the guide plate 13 smoother. The floating block 17 serves as the vertical support of the guide column 16, and the floating block 17 can only move in the vertical direction. The guide column 16 can slide horizontally relative to the floating block 17. The floating block 17 can limit the guide column 16, so that the push plate 2 at both ends of the guide column 16 and the guide plate 13 move up and down synchronously along the guide rail 1. This avoids the problem of poor contact between the roller 4 and the cover plate caused by the tilting of both ends of the guide column 16, and ensures that the sliding trajectory of the push plate 2 is synchronized with the guide rail 1. There are various ways to make the guide post 16 and the floating block 17 slide horizontally together. As long as the guide post 16 can slide relative to the floating block 17 in the front-back direction, it is acceptable. The method adopted in this utility model is that the floating block 17 is provided with the same number of guide sleeves 18 as the guide post 16. The guide post 16 passes through the guide sleeves 18 to achieve a sliding connection. The guide sleeves 18 and the guide post 16 cooperate to ensure the coaxiality of the guide sleeves 18 and the guide post 16, thereby ensuring the horizontality of the guide shaft's reciprocating sliding and further improving the synchronization and accuracy of the push plate 2's movement. As a sliding pair, the sleeves and the guide post 16 can withstand the friction in the reciprocating motion, reduce direct metal collision and wear, and at the same time reduce the sliding resistance of the guide post 16, making the sliding smoother and improving the stability of operation and the comfort of use.
[0042] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention includes a limiting post assembly. This assembly comprises several limiting posts 19 that pass through the fixed platform 12 and slide longitudinally relative to it. The fixed platform 12 also has limiting sleeves in the same number as the limiting posts 19. The limiting posts 19 slide in conjunction with the limiting sleeves, and one end of each limiting post 19 is fixedly connected to the floating block 17. To further ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention also includes an adjusting pad 20 for supporting the floating block 17 on the surface of the fixed platform 12 relative to the floating block 17. The adjusting pad 20 is positioned between the fixed platform 12 and the floating block 17. By changing the pad thickness or adjusting the number of pads, the floating block 17 can be kept within its optimal height range, improving guiding synchronization accuracy and achieving precise setting of the initial height of the floating block 17. Furthermore, a hydraulic shock absorber 21 is provided on the surface of the floating block 17 relative to the push plate 2. The hydraulic shock absorber 21 distributes impact energy, reduces wear on the push plate 2, and extends the service life of the entire closing device.
[0043] To ensure a simple, reliable structure and ease of assembly, the preferred embodiment of this invention is as follows: Figure 2 As shown, each roller fixing seat 3 includes a connecting seat 22 connected to the push plate 2. The connecting seat 22 and the push plate 2 can be fixed in various ways, such as welding or bolt connection. In order to achieve fine adjustment of the height of the connecting seat 22, this utility model uses bolt connection for fixing. Two support seats 23 are fixed on each connecting seat 22. The end of each support seat 23 away from the connecting seat 22 is opened with a rotating hole for rotatably connecting with the roller 4. There is a gap between the two support seats 23 for the second cover plate 10 to pass through. A reinforcing rib 24 is also provided between the two support plates 11 to improve the stability of the roller fixing seat 3 structure. The two support seats 23 support the roller 4, so that the roller 4 is not easy to displace or wobble when subjected to the pressure of closing the cover. The gap between the support seats 23 is a reserved channel for the second cover plate 10. When sliding in the forward direction, the gap can be used to accommodate the second cover plate 10. When the roller 4 slides in the reverse direction, it can smoothly contact the second cover plate 10 and press it together.
[0044] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention further includes a distance detection unit. This unit comprises a first distance sensor group and at least one second distance sensor group. Both the first and second distance sensor groups include a moving part and a reference part 25 disposed on the floating block 17. The moving part of the first distance sensor group is disposed on the push plate 2, and the moving part of the second distance sensor group is disposed on the guide plate 13. The first distance sensor group detects whether the push plate 2 has successfully reset after completing the closing operation. The second distance sensor group detects the sliding distance of the guide plate 13, enabling detection of whether the guide plate 13 has completed its sliding stroke, ensuring the completeness of the closing stroke. This dual confirmation improves the reliability of the equipment. To further ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention uses a power unit 15, which is a cylinder fixed to the floating block 17. The telescopic end of the cylinder passes through the floating block 17 and is fixedly connected to the push plate 2.
[0045] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A dual pin cover closing apparatus for injection mold, characterized in that: The device includes a support frame unit and a push unit mounted on the support frame unit. The support frame unit is provided with a guide rail (1). The push unit includes a push plate (2), a guide part that slides with the guide rail (1), and a power part (15) that drives the push plate (2) to slide back and forth. At least one roller fixing seat (3) is mounted on the push plate (2). The ends of the roller fixing seats (3) are rotatably provided with rollers (4) that can contact the cover plate. The push plate (2) is mounted on the guide part. The power part (15) drives the push plate (2) and the rollers (4) to slide along the guide rail (1) in the forward direction to cover one cover plate and slide in the reverse direction to cover another cover plate.
2. The dual toggle cover closing apparatus for injection molds of claim 1, wherein: The guide rail (1) includes a first horizontal section (5), a flange section (6) and a second horizontal section (7) connected in sequence. The second horizontal section (7) is higher than the first horizontal section (5). The flange section (6) is a raised arc trajectory and the highest point of the flange section (6) is higher than the second horizontal section (7). The end of the second horizontal section (7) is close to the push plate (2).
3. The dual toggle cover closing apparatus for injection molds of claim 1, wherein: The support frame unit includes two symmetrically arranged support plates (11) and a fixed platform (12). The fixed platform (12) is located on one side of the two support plates (11) and is fixedly connected to both support plates (11). The guide rails (1) are symmetrically arranged on the opposite surfaces of the two support plates (11).
4. The dual toggle cover closing apparatus for injection molds of claim 3, wherein: The guide unit includes a guide plate (13) and a guide post assembly. Both sides of the guide plate (13) are provided with rotating bearings (14) that slide with the guide rail (1). The guide post assembly includes several guide posts (16) whose two ends are fixedly connected to the guide plate (13) and the push plate (2) respectively. The push unit also includes a limiting part, which includes a floating block (17) that can only move in the vertical direction. The guide posts (16) can slide horizontally relative to the floating block (17).
5. The dual toggle cover closing apparatus of claim 4, wherein: The limiting part also includes a limiting post group, which includes several limiting posts (19) that pass through the fixed platform (12) and can slide longitudinally relative to it. One end of each limiting post (19) is fixedly connected to the floating block (17).
6. The dual toggle cover closing apparatus for injection molds of claim 5, wherein: The floating block (17) is provided with the same number of guide sleeves (18) as the guide posts (16), and the guide posts (16) pass through the guide sleeves (18) to achieve sliding connection.
7. The dual toggle cover closing apparatus of claim 4, wherein: It also includes a distance detection unit, which includes a first distance sensor group and at least one second distance sensor group. Both the first and second distance sensor groups include a moving part (8) and a reference part (25) disposed on the floating block (17). The moving part (8) of the first distance sensor group is disposed on the push plate (2), and the moving part (8) of the second distance sensor is disposed on the guide plate (13).
8. The dual toggle cover closing apparatus of claim 4, wherein: The power unit (15) is a cylinder fixed on the floating block (17), and the telescopic end of the cylinder passes through the floating block (17) and is fixedly connected to the push plate (2).
9. The dual toggle cover closing apparatus of claim 4, wherein: The fixed platform (12) has an adjustment pad (20) for supporting the floating block (17) on its surface relative to the floating block (17), and the floating block (17) has a hydraulic shock absorber (21) on its surface relative to the push plate (2).
10. The dual pin ejector apparatus of any of claims 1-9, wherein: The fixed seat (3) of the roller comprises a connecting seat (22) connected with the push plate (2), two support seats (23) are fixed on the connecting seat (22), and rotating holes for rotating connection with the roller (4) are formed at the ends of the two support seats (23) away from the connecting seat (22). The second cover plate (10) passes through the gap between the two support seats (23).