In-mold cover closing device

Abstract

The utility model discloses an in-mold cover closing device which comprises a driver, a machine frame and a cover closing mechanism which are sequentially connected, the cover closing mechanism comprises a driving piece, a guide rail and a cover closing rod, the driving piece is arranged on the inner side of the guide rail, the cover closing rod penetrates through the driving piece and abuts against the guide rail, and the driving piece drives the cover closing rod to move along the guide rail. The cover closing rod is used for rotating the cover piece of the cover to the cover base of the cover in the process of moving along the guide rail and buckling the cover piece and the cover base. The cover closing device is not only suitable for buckling the cover in the middle, but also can be well suitable for buckling the cover on the outer circle, so that the cover closing precision is effectively improved, and the quality problem and the product loss caused by untight cover closing are reduced.

Description

Technical Field

[0001] The utility model relates to but is not limited to the technical field of mold structures, and in particular to an in-mold lid closing device. Background Art

[0002] In modern industrial production, in-mold lid closing devices are an indispensable component of automated production lines, widely used in packaging, food, pharmaceuticals, electronics, and other fields. Their performance directly determines product packaging quality and production efficiency. Traditional in-mold lid closing mechanisms typically use a rotating lever to snap the lid closed. While this method is simple and straightforward, it has significant limitations in practical applications.

[0003] Traditional lever-driven lid-closing mechanisms are typically designed for products where the fastening point is located in the center or middle of the lid. This is because the lever's rotational path is relatively fixed and its rotation radius is limited, making it difficult to adapt to products where the fastening point is located at the edge or outer edge of the lid. For these products, traditional lever-driven mechanisms often have difficulty accurately rotating the lid's flap to the corresponding position on the lid base, resulting in the lid not fastening tightly or failing to fasten at all. Summary of the Invention

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] The utility model provides an in-mold lid closing device, which can realize the tight fastening of the lid sheet and the lid seat, effectively improve the lid closing accuracy, and reduce quality problems and product losses caused by loose lid closing.

[0006] The utility model provides an in-mold closing device, comprising: a driver, a closing mechanism and a frame, wherein the driver, the frame and the closing mechanism are connected in sequence; the closing mechanism comprises a driving member, a guide rail and a closing rod, the driving member is arranged on the inner side of the guide rail, the closing rod is passed through the driving member and abuts against the guide rail; the driving member drives the closing rod to move along the guide rail, and the closing rod is used to rotate the cover piece of the lid onto the cover seat of the lid during the movement along the guide rail, and to buckle the cover piece with the cover seat.

[0007] In one embodiment of the present utility model, a closing track is provided on the guide rail, and the closing track includes a first translation section, a second translation section and a bending section. One end of the closing rod abuts against the closing track. When the driving member pushes the closing rod to move along the guide rail, the closing rod moves along the first translation section and the bending section to the second translation section.

[0008] In an embodiment of the present utility model, one end of the bent section is provided with a protruding section, and the position of the protruding section corresponds to the position of the hinge at the connection between the cover plate and the cover base.

[0009] In an embodiment of the present utility model, a limiting hole is provided on the driving member, the lid closing rod passes through the limiting hole and abuts against the guide rail. When the lid closing rod moves along the guide rail, the lid closing rod and the limiting hole move relative to each other.

[0010] In an embodiment of the present utility model, limiting strips are provided inside the guide rail, and the limiting strips are provided with sliding grooves. The driving member is placed in the sliding grooves. When the driving member drives the lid closing rod to move along the guide rail, the driving member and the sliding grooves move relative to each other.

[0011] In an embodiment of the present utility model, a movable plate and a connecting rod are provided on the frame. One end of the connecting rod is fixedly connected to the movable plate, and the other end is in transmission connection with the driving member. The driver drives the movable plate to move, and the movable plate is used to push the driving member to move through the connecting rod.

[0012] In an embodiment of the present utility model, a first fixing plate, a second fixing plate and a transmission shaft are further provided on the frame. The movable plate passes through the transmission shaft and abuts against the first fixing plate; when the lid closing rod rotates the cover plate of the lid to the cover base of the lid, the movable plate moves along the transmission shaft and abuts against the second fixing plate.

[0013] In an embodiment of the present utility model, the first fixing plate is provided with an opening, and the output shaft of the driver passes through the opening and abuts against the movable plate.

[0014] In an embodiment of the present utility model, the in-mold lid closing device includes an upper mold and a lower mold. The lid closing mechanism is installed between the upper mold and the lower mold. The lower mold is provided with an ejection mechanism. When the upper mold and the lower mold are in an open state, the ejection mechanism is used to eject the lid so that the lid closing rod rotates the cover plate of the lid to the cover base of the lid.

[0015] In an embodiment of the present utility model, a fixing member is provided below the guide rail, and the guide rail is installed on the lower mold through the fixing member.

[0016] The beneficial effects of the in-mold lid closing device provided by the present utility model are mainly reflected in the following aspects:

[0017] 1. Through the precise control of the driver, the in-mold lid closing device can achieve automatic lid closing operations, greatly improving production efficiency. Compared with manual operation, automatic lid closing is not only faster but also can reduce errors caused by human factors, effectively improving the lid closing accuracy and reducing quality problems and product losses caused by loose lid closing.

[0018] 2. The driving part, guide rail and lid closing rod in the lid closing mechanism work together to ensure that during the movement of the lid closing rod along the guide rail, the lid piece of the lid can be precisely rotated onto the lid seat of the lid and the two can be buckled. This precise lid closing ensures the appearance quality of the product and also enhances the sealing and stability of the product.

[0019] 3. Due to the firm connection between the driver, the lid closing mechanism and the frame, the entire in-mold lid closing device has strong stability during operation and is not easily interfered by external factors. This stability not only ensures the smooth progress of the lid closing operation but also extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the in-mold lid closing device provided by the present utility model;

[0021] Figure 2 is a schematic structural diagram of the guide rail provided by the present utility model;

[0022] Figure 3 is a schematic structural diagram of the driving part provided by the present utility model;

[0023] Figure 4 is a schematic overall structural diagram of the in-mold lid closing device provided by the present utility model;

[0024] Figure 5 is a schematic diagram of the working process of the in-mold lid closing device provided by the present utility model;

[0025] Reference numerals: driver 110; lid closing mechanism 120; frame 130; driving part 121; guide rail 122; lid closing rod 123; first translation section 210; second translation section 220; bending section 230; protruding section 231; limiting hole 310; limiting strip 124; movable plate 131; connecting rod 132; first fixing plate 133; second fixing plate 134; transmission shaft 135; upper mold 410; lower mold 420; ejecting mechanism 430; fixing part 140; limiting nut 150; support bar 510; ejecting part 520. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] It should be noted that although the logical sequence is shown in the flowchart, in some cases, the steps shown or described may be executed in a sequence different from that in the flowchart. Terms such as "first", "second", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to describe a specific sequence or order. It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have a technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the objectives that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope under which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope under which the present invention can be implemented.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used herein are only for the purpose of describing the present utility model and are not intended to limit the present utility model.

[0029] Traditional flip-bar drive lid-closing mechanisms are generally designed for products where the fastening position is at the center or middle of the lid. This is because the movement path of the flip-bar rotation is relatively fixed and the rotation radius is limited, making it difficult to adapt to products where the fastening position is at the edge or the outer circumference of the lid. For such products, the traditional flip-bar drive method often cannot accurately rotate the lid piece of the lid to the corresponding position of the lid base, resulting in the lid not being tightly closed or unable to be closed.

[0030] In view of this, the present utility model provides an in-mold lid closing device, which realizes the precise lid closing through the coordinated action of a driver, a lid closing mechanism and a frame. The lid closing mechanism in this device adopts a combined design of a driving member, a guide rail and a lid closing rod. Through the movement of the driving member in the guide rail, the lid closing rod is driven to move along the guide rail, so as to rotate the lid piece of the lid to the corresponding position of the lid seat and precisely fasten the lid piece with the lid seat. This design is not only applicable to products (lids) with the fastening position in the middle, but also can well adapt to products with the fastening position in the outer circle, realizing high-precision and high-efficiency lid closing operations, effectively improving the precision of lid closing, and reducing quality problems and product losses caused by loose lid closing.

[0031] The following further elaborates on the present utility model in conjunction with the accompanying drawings.

[0032] See Figure 1 , Figure 1 is a schematic structural diagram of the in-mold lid closing device provided by the present utility model. The in-mold lid closing device includes a driver 110, a lid closing mechanism 120 and a frame 130. Among them, the driver 110, the lid closing mechanism 120 and the frame 130 are connected in sequence and cooperate together to complete the lid closing operation of the lid. Specifically, the lid closing mechanism 120 includes a driving member 121, a guide rail 122 and a lid closing rod 123. The driving member 121 is arranged inside the guide rail 122, and the lid closing rod 123 passes through the driving member 121 and abuts against the guide rail 122. The driving member 121 can drive the lid closing rod 123 to move along the guide rail 122. As Figure 1 shown, both the driving member 121 and the guide rail 122 can be symmetrically arranged left and right. Both ends of the lid closing rod 123 pass through the driving member 121 and abut against the guide rail 122. The lid closing rod 123 can rotate the lid piece of the lid to the lid seat of the lid during the movement along the guide rail 122 and fasten the lid piece with the lid seat to realize the tight fastening of the lid piece with the lid seat.

[0033] In a feasible embodiment, the driver 110, as the power source of this device, can adopt an oil cylinder system, and provides a stable and reliable driving force through an accurately controlled hydraulic mechanism. The driver 110 is installed on the frame 130 and is connected to the lid closing mechanism 120 through a connecting piece, ensuring the accuracy and stability of power transmission and providing a solid foundation for the entire lid closing process.

[0034] See Figure 2 , Figure 2This is a schematic diagram of the guide rail structure provided by the present utility model. A lid-closing rail is provided on the guide rail 122. The lid-closing rail includes a first translation section 210, a second translation section 220, and a bending section 230. One end of the lid-closing rod 123 abuts against the lid-closing rail. When the driving member 121 pushes the lid-closing rod 123 to move along the guide rail 122, the lid-closing rod 123 can rotate the lid piece of the lid to the lid base of the lid and fasten the lid piece to the lid base during the process of moving along the first translation section 210, passing through the bending section 230, and moving to the second translation section 220, realizing the tight fastening of the lid piece and the lid base.

[0035] In a feasible embodiment, as Figure 2 shown, a protruding section 231 is provided at one end of the bending section 230. The position of the protruding section 231 corresponds to the position of the hinge at the connection between the lid piece and the lid base, ensuring that when the lid-closing rod 123 moves along the bending section 230, it can accurately guide the hinge of the lid piece and the lid base for accurate alignment, thereby ensuring the accuracy and stability of the lid-closing operation.

[0036] See Figure 3 , Figure 3 This is a schematic diagram of the driving member structure provided by the present utility model. A limiting hole 310 is provided on the driving member 121. The lid-closing rod 123 passes through the limiting hole 310 and abuts against the guide rail 122. When the lid-closing rod 123 moves along the guide rail 122, the lid-closing rod 123 and the limiting hole 310 move relative to each other, ensuring the stability and accuracy of the lid-closing rod 123 during the movement process. As Figure 3 shown, the lid-closing rod 123 can move along the first translation section 210 and the bending section 230 of the lid-closing rail of the guide rail 122 to the second translation section 220, rotate the lid piece of the lid to the lid base of the lid, and realize the tight fastening of the lid piece and the lid base.

[0037] In a feasible embodiment, the driving member 121 can be a detachable or spliceable module, which can be flexibly configured and adjusted according to the number and layout of the guide rails 122, thereby enhancing the flexibility and adaptability of the device and enabling it to adapt to lid-closing requirements of different scales and complexities.

[0038] In a feasible embodiment, as Figure 1 shown, a limiting strip 124 is provided inside the guide rail 122. The limiting strip 124 is provided with a sliding groove. The driving member 121 is placed in the sliding groove. When the driving member 121 starts to work and drives the lid-closing rod 123 to move along the guide rail 122, the driving member 121 will smoothly slide relative to the sliding groove, thereby ensuring the smoothness and reliability of the entire operation process.

[0039] In a feasible embodiment, as Figure 1As shown in the figure, a movable plate 131 and a connecting rod 132 are provided on the frame 130. One end of the connecting rod 132 is fixedly connected to the movable plate 131, and the other end is in transmission connection with the driving member 121. When the driver 110 is started and drives the movable plate 131 to move, the movable plate 131 effectively pushes the driving member 121 to perform corresponding movements through the transmission of the connecting rod 132, ensuring the coherence and efficiency of the movement.

[0040] In a feasible embodiment, the frame 130 includes a first fixed plate 133, a second fixed plate 134, and a transmission shaft 135. When the driver 110 is in the initial state (non-started state or reset state), the movable plate 131 passes through the transmission shaft 135 and abuts against the first fixed plate 133. When the driver 110 is in the started state, that is, when the lid closing rod 123 rotates the lid piece of the lid onto the lid base of the lid, the movable plate 131 will move along the transmission shaft 135 and abut against the second fixed plate 134, ensuring the precise control and efficient operation of the device.

[0041] In a feasible embodiment, the first fixed plate 133 is provided with an opening, and the output shaft of the driver 110 passes through the opening and abuts against the movable plate 131. When the driver 110 is in the started state, the output shaft of the driver pushes the movable plate 131 to move along the transmission shaft 135 towards the second fixed plate 134, so that the movable plate 131 pushes the driving member 121 to perform corresponding movements through the connecting rod 132, achieving the purpose of tightly fastening the lid piece and the lid base.

[0042] See Figure 4 , Figure 4 is the overall structural schematic diagram of the in-mold lid closing device provided by the present utility model. The in-mold lid closing device includes an upper mold 410 and a lower mold 420. The lid closing mechanism 120 is installed between the upper mold 410 and the lower mold 420. Among them, the lower mold 420 is provided with an ejection mechanism 430. When the upper mold 410 and the lower mold 420 are in the open state, that is, when the in-mold lid closing device is preparing for work, the ejection mechanism 430 can eject the lid to be lid closed, so that the lid closing rod 123 rotates the lid piece of the lid onto the lid base of the lid.

[0043] In a feasible embodiment, as Figure 1 shown, a fixing member 140 is provided below the guide rail 122, and the guide rail 122 can be installed on the lower mold 420 through the fixing member 140. Since the guide rail 122, the driving member 121, and the lid closing rod are tightly connected, fixing the guide rail 122 on the lower mold 420 through the fixing member 140 can make the lid closing mechanism 120 be stably fixed on the lower mold 420. After the ejection mechanism 430 ejects the lid to be lid closed, the lid closing rod 123 can rotate the lid piece of the lid onto the lid base of the lid during the movement along the guide rail 122, achieving the precise fastening of the lid piece and the lid base.

[0044] In a feasible embodiment, as Figure 1 shown, a plurality of plug-ins are provided on the second fixing plate 134, and these plug-ins can be accurately inserted into the corresponding positions of the lower mold 420, thereby ensuring a firm connection between the second fixing plate 134 and the lower mold 420. Through this connection method, the frame 130 is stably and reliably fixed on the lower mold 420, providing a solid support for the entire operation process.

[0045] In a feasible embodiment, as Figure 1 and Figure 4 shown, limit nuts 150 are provided at the four corners of the second fixing plate 134. These limit nuts 150 not only play a role in stabilizing the structure, but also in Figure 4 the process, when the movable plate 131 moves to the second fixing plate 134, the limit nuts 150 can also accurately limit the moving range of the movable plate 131, ensuring that it stops at the correct position, thereby guaranteeing the safety and accuracy of the entire operation process.

[0046] The following uses specific examples to illustrate the usage process of the present utility model.

[0047] Refer to Figure 5 , Figure 5 is a schematic diagram of the working process of the in-mold lid closing device provided by the present utility model. The driver 110, the lid closing mechanism 120, and the frame 130 are all relatively fixed to the lower mold 420. As Figure 5 (a) shows, when the mold is in the mold closing state, the upper mold 410 covers the lid closing mechanism 120. When the in-mold lid closing device is in the open state, an appropriate distance is maintained between the upper mold 410 and the lower mold 420 to ensure the normal operation of the lid closing mechanism 120. As Figure 5 (b) shows, in order to stabilize their open state, a support bar 510 can be set to strengthen the interval between them. After these preparations are completed, the ejection mechanism 430 in the lower mold 420 can eject the lid to be lid closed, so that the lid closing rod 123 rotates the lid piece of the lid to the lid seat of the lid, realizing the precise buckling of the lid piece and the lid seat. Specifically, when the lid to be lid closed is ejected by the ejection mechanism 430, the driver 110 starts to operate, and its output shaft pushes the movable plate 131 to move forward together. The movable plate 131 pushes the driving member 121 to move forward along the limiting bar 124 through the connecting rod 132, so that the driving member 121 can push the lid closing rod 123 to move along the guide rail 122, smoothly rotating the lid piece of the lid to the lid seat, realizing the precise buckling of the lid piece and the lid seat, and thus completing the lid closing process. As Figure 5(As shown in (e)), after the lid closing operation is completed, the driver 110 immediately enters the reset mode. Through reverse movement, the driver 110 can drive the movable plate 131 to retract, and then through the connecting rod 132, the driving member 121 and the lid closing rod 123 are moved reversely along the guide rail 122 to return to the initial position. Other related movable components are also reset synchronously, and the entire system returns to the standby working state. When the driver 110, the lid closing mechanism 120, and the frame 130 are all reset, as Figure 5 (f) shows, the ejector 520 (such as a thimble) of the lower mold 420 can smoothly eject the lid with the lid already closed, preparing for the next production process. Through precise cooperative operation and reset mechanism, the entire system ensures the high efficiency, stability, and precision of the lid closing process.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An in-mold lid closing device, characterized in that, Comprising: A driver, a lid-closing mechanism and a frame, the driver, the frame and the lid-closing mechanism are connected in sequence; the lid-closing mechanism includes a driving member, a guide rail and a lid-closing rod, the driving member is arranged inside the guide rail, and the lid-closing rod passes through the driving member and abuts against the guide rail; the driving member drives the lid-closing rod to move along the guide rail, and the lid-closing rod is used for rotating the lid piece of the lid to the lid seat of the lid during the movement along the guide rail, and buckling the lid piece and the lid seat.

2. The in-mold lid closing device according to claim 1, wherein A lid-closing track is provided on the guide rail, the lid-closing track includes a first translation section, a second translation section and a bending section, one end of the lid-closing rod abuts against the lid-closing track, when the driving member pushes the lid-closing rod to move along the guide rail, the lid-closing rod moves along the first translation section and the bending section to the second translation section.

3. The in-mold lid closing device according to claim 2, wherein, A protruding section is provided at one end of the bending section, and the position of the protruding section corresponds to the position of the hinge at the connection between the lid piece and the lid seat of the lid.

4. The in-mold lid closing device according to claim 1, wherein A limiting hole is provided on the driving member, the lid-closing rod passes through the limiting hole and abuts against the guide rail, when the lid-closing rod moves along the guide rail, the lid-closing rod and the limiting hole move relative to each other.

5. The in-mold lid closing device according to claim 1, characterized in that, Limit strips are provided inside the guide rail, the limit strips are provided with sliding grooves, the driving member is placed in the sliding grooves, when the driving member drives the lid-closing rod to move along the guide rail, the driving member and the sliding grooves move relative to each other.

6. The in-mold lid closing device according to claim 1, characterized in that, A movable plate and a connecting rod are provided on the frame, one end of the connecting rod is fixedly connected to the movable plate, and the other end is in transmission connection with the driving member, the driver drives the movable plate to move, and the movable plate is used for pushing the driving member to move through the connecting rod.

7. The in-mold lid closing device according to claim 6, characterized in that, A first fixing plate, a second fixing plate and a transmission shaft are further provided on the frame, the movable plate passes through the transmission shaft and abuts against the first fixing plate; when the lid-closing rod rotates the lid piece of the lid to the lid seat of the lid, the movable plate moves along the transmission shaft and abuts against the second fixing plate.

8. The in-mold lid closing device according to claim 7, characterized in that, The first fixing plate is provided with an opening, and the output shaft of the driver passes through the opening and abuts against the movable plate.

9. The in-mold lid closing device according to claim 1, characterized in that, The in-mold lid-closing device includes an upper mold and a lower mold, the lid-closing mechanism is installed between the upper mold and the lower mold, the lower mold is provided with an ejecting mechanism, when the upper mold and the lower mold are in an open state, the ejecting mechanism is used for ejecting the lid, so that the lid-closing rod rotates the lid piece of the lid to the lid seat of the lid.

10. The in-mold lid closing device according to claim 9, characterized in that, A fixing member is provided below the guide rail, and the guide rail is installed on the lower mold through the fixing member.

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