A mould for thermo-sealing blister packs and tyvek

Abstract

The utility model discloses a kind of mould for blister box and teflon paper heat seal, including mould body and adhesive tape, the first upper surface of mould body is recessed and formed with multiple grooves, the bottom wall of groove is opened and is used to accommodate the accommodating groove of blister box;Adhesive tape is accommodated in groove, the middle part of adhesive tape is formed with the aperture for blister box to pass through, and the second upper surface of adhesive tape is higher than the first upper surface of mould body;The side of adhesive tape towards mould body is provided with multiple positioning columns, the bottom wall of groove is opened and is provided with multiple positioning slots, multiple positioning columns are one-to-one corresponding and embedded in multiple positioning slots.In the utility model, adhesive tape on mould is convenient and fast to replace, greatly reduces the replacement time of adhesive tape, improves maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat sealing mold technology, and in particular to a mold for heat sealing blister boxes and Tyvek paper. Background Technology

[0002] In the current medical field, the demand for medical blister packs is increasing. The production of medical blister packs requires heat sealing between the blister pack and Tyvek paper, which requires the use of molds.

[0003] Existing molds consist of a mold body and a rubber strip. The common method for connecting the rubber strip to the mold body is a semi-permanent adhesive bonding process. This installation method uses the curing effect of the adhesive to firmly fix the rubber strip to the preset position on the mold body, which can meet basic sealing requirements during the initial assembly and long-term stable operation of the mold, and is therefore widely used in the industry.

[0004] However, the limitations of traditional adhesive strip installation methods become apparent when the mold needs adjustment for local flatness due to wear, assembly errors, or other reasons during use. Since the adhesive strip is tightly bonded to the mold with glue, the adjustment process requires removing the cured glue to remove the original strip. This operation not only easily causes irreversible damage to the strip, rendering it unusable, but also necessitates reapplying glue and waiting for it to cure after adjustment. The glue removal, application, and curing processes are time-consuming, and these steps must be repeated for multiple adjustments, severely impacting mold maintenance efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a mold for heat sealing blister packs and Tyvek paper. The adhesive strips on this mold are easy and quick to replace, greatly reducing the replacement time and improving maintenance efficiency.

[0006] This utility model is achieved through the following technical solution: A mold for heat-sealing blister packs and Tyvek paper, comprising: The mold body has a plurality of grooves formed in the first upper surface, and the bottom wall of the grooves is provided with a receiving groove for accommodating the blister box. An adhesive strip is provided within the groove, with an opening formed in the middle of the adhesive strip for the blister box to pass through, and the second upper surface of the adhesive strip is higher than the first upper surface of the mold body; The adhesive strip has multiple positioning posts protruding on the side facing the mold body, and the bottom wall of the groove has multiple positioning slots, with each positioning post being embedded in one of the positioning slots.

[0007] Furthermore, a gasket is provided between the adhesive strip and the bottom wall forming the groove. The gasket has multiple through holes for the positioning post to pass through, and the multiple through holes correspond one-to-one with the multiple positioning grooves.

[0008] Furthermore, the adhesive strip is made of silicone and is integrally molded.

[0009] Furthermore, the outer peripheral wall of the adhesive strip is attached to the inner peripheral wall forming the groove.

[0010] Furthermore, the mold body is also provided with a plurality of positioning pins, which are distributed around the outer periphery of the adhesive strip to limit the positioning of the Tyvek paper.

[0011] Furthermore, it also includes a push rod assembly, which is disposed on the mold body and is used to eject the blister box located in the receiving groove.

[0012] Furthermore, the push rod assembly includes a push rod, a rotating shaft, and a paddle. The rotating shaft is rotatably mounted on the mold body, the paddle is fixed to the rotating shaft and located at the bottom of the receiving groove, and the push rod is located outside the mold body and fixedly connected to the end of the rotating shaft.

[0013] Furthermore, a pair of rotating shafts are provided, the pair of rotating shafts are arranged parallel to each other, and the pair of rotating shafts rotate synchronously through a linkage component; The linkage assembly includes a connecting rod, a first rocker arm, and a second rocker arm. One end of the connecting rod is rotatably connected to the first rocker arm via a first rotating shaft, and the other end of the connecting rod is rotatably connected to the second rocker arm via a second rotating shaft. The end of the first rocker arm away from the connecting rod is fixedly connected to one of the pair of rotating shafts, and the end of the second rocker arm away from the connecting rod is fixedly connected to the other of the pair of rotating shafts.

[0014] Furthermore, the rotating shaft is provided with a plurality of paddles, and the plurality of paddles are provided in a one-to-one correspondence with the plurality of receiving slots.

[0015] Furthermore, the rotating shaft is fixedly connected to the mold body via bearings.

[0016] Furthermore, the mold body includes a base plate, a vertical plate assembly, and a top plate. One end of the vertical plate assembly is fixedly connected to the base plate, and the other end is fixedly connected to the top plate. The groove is formed on the top plate, and the receiving groove is formed on the vertical plate assembly. The outer peripheral surface of the upright plate assembly is provided with a plurality of positioning adjustment blocks, which are threadedly connected to the upright plate assembly.

[0017] Compared with existing technologies, the advantages of this utility model are: 1. The rubber strip is fixed to the mold body by a press-fit installation method, and the rubber strip and the mold body are fitted together by positioning pins and positioning grooves, making the replacement of the rubber strip convenient and quick, greatly reducing the replacement time of the rubber strip and improving maintenance efficiency. It also makes the addition and removal of gaskets convenient and quick, without removing the glue from the original rubber strip or damaging the original rubber strip. In addition, the gasket can be quickly installed between the rubber strip and the mold body, and multiple functional tests and adjustments can be made during the process, eliminating the process of removing glue, applying glue, and glue curing, which greatly saves replacement time and improves maintenance efficiency.

[0018] 2. Through the linkage structure of the push rod, rotating shaft and paddle, and the rotatable design of the rotating shaft, the blister box is smoothly ejected after heat sealing, protecting the integrity of the product, simplifying the part removal steps, improving the convenience and efficiency of operation, and the simple structure does not affect the heat sealing process, making it highly practical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the mold structure; Figure 2 An exploded view of the mold; Figure 3 This is a partial structural diagram of the mold; Figure 4 This is a schematic diagram of the adhesive strip structure; Figure 5 This is a partial sectional view of the mold; Figure 6 This is a schematic diagram of the push rod assembly. 100. Mold body; 110. Base plate; 120. Vertical plate assembly; 121. Positioning adjustment block; 130. Top plate; 101. First upper surface; 102. Groove; 103. Bottom wall; 104. Receiving groove; 105. Positioning groove; 106. Positioning pin; 200. Rubber strip; 201. Opening; 202. Second upper surface; 203. Positioning post; 300. Push rod assembly; 310. Push rod; 320. Rotating shaft; 330. Paddle; 340. Connecting rod; 350. First rocker arm; 360. Second rocker arm; 370. First rotating shaft; 380. Second rotating shaft; 390. Bearing. Detailed Implementation

[0020] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] like Figures 1-4As shown, an embodiment of the present invention provides a mold for heat sealing blister packs and Tyvek paper, comprising a mold body 100 and an adhesive strip 200. The first upper surface 101 of the mold body 100 is recessed to form a plurality of grooves 102. The bottom wall 103 of the grooves 102 is provided with a receiving groove 104 for accommodating the blister pack. The adhesive strip 200 is accommodated in the grooves 102. An opening 201 for the blister pack to pass through is formed in the middle of the adhesive strip 200. A plurality of positioning posts 203 are protruding on the side of the adhesive strip 200 facing the mold body 100. A plurality of positioning grooves 105 are formed on the bottom wall 103 of the grooves 102. The plurality of positioning posts 203 are embedded in the plurality of positioning grooves 105 one by one. A gasket is also provided between the adhesive strip 200 and the bottom wall 103 of the grooves 102. A plurality of through holes for the positioning posts 203 to pass through are formed on the gasket. The plurality of through holes are provided in a one-to-one correspondence with the plurality of positioning grooves 105. In actual operation, when assembling the mold, the operator first aligns the multiple positioning pins 203 on one side of the rubber strip 200 with the multiple positioning slots 105 on the bottom wall 103 of the groove 102, and then inserts the positioning pins 203 one by one into the positioning slots 105, thus completing the initial positioning and installation of the rubber strip 200 and the mold body 100. If it is necessary to adjust the distance between the rubber strip 200 and the mold body 100, the rubber strip 200 can be removed from the groove 102 first. According to the required thickness adjustment, an appropriate number of shims can be selected. The multiple perforations on the shims can be aligned with the positioning slots 105, so that the shims are laid flat on the bottom wall 103 of the groove 102. Then, the positioning pins 203 of the rubber strip 200 are inserted into the positioning slots 105 after passing through the perforations of the shims, thereby achieving precise adjustment of the distance between the rubber strip 200 and the bottom wall 103. During the heat sealing process, the blister pack passes through the opening 201 in the middle of the adhesive strip 200. The adhesive strip 200 maintains a stable position under the cooperation of the positioning post 203 and the positioning groove 105, ensuring accurate connection between the blister pack and the heat-sealed part of the Tyvek paper.The structural design offers significant advantages: Firstly, the one-to-one interlocking of the positioning pins 203 and positioning grooves 105 enables rapid positioning and installation of the adhesive strip 200 and the mold body 100, avoiding heat-sealing deviations caused by inaccurate positioning in traditional installation methods, thus improving mold assembly efficiency and precision. Secondly, the use of shims provides a convenient way to adjust the spacing between the adhesive strip 200 and the bottom wall 103. Operators can flexibly increase or decrease the number of shims according to actual needs without requiring destructive processing of the mold body 100 or the adhesive strip 200, greatly improving efficiency. The mold's adaptability to different specifications of blister boxes and Tyvek paper has been improved. Thirdly, the corresponding design of the perforations on the gaskets and the positioning grooves 105 and positioning posts 203 ensures that the gaskets will not shift during installation and use, guaranteeing the stability after spacing adjustment, and thus ensuring the consistency and reliability of the heat sealing process. Fourthly, the detachable connection structure between the adhesive strip 200 and the mold body 100 makes the replacement and cleaning of the adhesive strip 200 and the adjustment of the number of gaskets more convenient and quick, reducing the mold's maintenance time and cost and extending the overall service life of the mold. like Figure 5 As shown, the second upper surface 202 of the adhesive strip 200 is higher than the first upper surface 101 of the mold body 100. During the heat sealing operation, when the blister pack and Tyvek paper are placed above the mold body 100 and pressed down for heat bonding, because the second upper surface 202 of the adhesive strip 200 is higher than the first upper surface 101 of the mold body 100, the adhesive strip 200 will contact the blister pack before the mold body 100. As the pressing action continues, the adhesive strip 200 undergoes appropriate deformation under pressure. At this time, a certain gap is maintained between the first upper surface 101 of the mold body 100 and the blister pack, avoiding direct hard contact between the mold body and the blister pack, while the edge of the blister pack and the part of the Tyvek paper located inside the sealing area are heat-bonded.

[0022] The adhesive strip 200 is made of silicone and is integrally molded. The silicone material of the adhesive strip 200 combines excellent elasticity and heat resistance, and the structural consistency brought about by the integral molding further ensures the performance stability of the adhesive strip 200 after repeated use.

[0023] The outer peripheral wall of the adhesive strip 200 is fitted to the inner peripheral wall forming the groove 102. The main purpose of this design is to further enhance the positioning stability of the adhesive strip 200 on the mold body 100. By tightly fitting the outer peripheral wall to the inner peripheral wall, the horizontal displacement of the adhesive strip 200 can be restricted, preventing it from shifting due to uneven force during the heat sealing process.

[0024] The mold body 100 is also provided with multiple positioning pins 106, which are distributed around the outer periphery of the adhesive strip 200 to limit the Tyvek paper. The multiple positioning pins 106 can accurately limit the Tyvek paper, prevent it from shifting or wrinkling during the heat sealing process, and ensure that the Tyvek paper and the heat sealing position of the blister box are accurately aligned.

[0025] like Figure 6 As shown, the mold also includes a push rod assembly 300, which is disposed on the mold body 100 and used to eject the blister pack located in the receiving groove 104. Specifically, the push rod assembly 300 includes a push rod 310, a rotating shaft 320, and a paddle 330. The rotating shaft 320 is rotatably disposed on the mold body 100, the paddle 330 is fixed to the rotating shaft 320 and located at the bottom of the receiving groove 104, and the push rod 310 is located outside the mold body 100 and is fixedly connected to the end of the rotating shaft 320. After the blister pack and Tyvek paper are heat-sealed, when the blister pack needs to be removed from the receiving groove 104, the push rod assembly 300 starts to operate: the operator applies a rotational force to the push rod 310 on the outside of the mold body 100. Since the push rod 310 is fixedly connected to the end of the rotating shaft 320, the force will drive the rotating shaft 320 to rotate synchronously; the paddle 330, which is fixed on the rotating shaft 320 and located at the bottom of the receiving groove 104, will tilt upwards as the rotating shaft 320 rotates, thereby pushing the blister pack in the receiving groove 104, causing it to gradually detach from the receiving groove 104; when the blister pack is pushed to a position that is easy to remove, the operator rotates the push rod 310 in the opposite direction, the rotating shaft 320 rotates in the opposite direction to reset, and the paddle 330 also returns to the initial position at the bottom of the receiving groove 104, waiting for the next ejection operation. The push rod assembly 300 offers significant advantages: Firstly, the linkage structure of the push rod 310, rotating shaft 320, and lever 330 allows for easy ejection of the heat-sealed blister pack from the receiving groove 104, avoiding potential deformation or separation of the Tyvek paper from the blister pack due to manual removal, thus protecting the product's integrity. Secondly, the operation only requires applying force to the push rod 310 on the outside of the mold body 100, eliminating the need to penetrate deep into the receiving groove 104, simplifying the removal process and improving operational convenience and efficiency. Thirdly, the rotatable design of the rotating shaft 320 ensures smooth and controllable ejection of the lever 330, allowing for flexible adjustment of the ejection force based on the size and weight of the blister pack, reducing the risk of damage. Furthermore, the entire push rod assembly has a simple structure, does not occupy excessive space when installed on the mold body 100, and does not affect the heat-sealing process between the blister pack and the Tyvek paper, making it highly practical.

[0026] In this embodiment, a pair of rotating shafts 320 are provided, arranged parallel to each other, and rotate synchronously through a linkage assembly. Specifically, the linkage assembly includes a connecting rod 340, a first rocker arm 350, and a second rocker arm 360. One end of the connecting rod 340 is rotatably connected to the first rocker arm 350 through a first rotating shaft 370, and the other end of the connecting rod 340 is rotatably connected to the second rocker arm 360 through a second rotating shaft 380. The end of the first rocker arm 350 away from the connecting rod 340 is fixedly connected to one of the rotating shafts 320, and the end of the second rocker arm 360 away from the connecting rod 340 is fixedly connected to the other rotating shaft 320. The pair of rotating shafts 320 achieve synchronous rotation through the linkage assembly consisting of the connecting rod 340, the first rocker arm 350, the second rocker arm 360, and the rotating shaft. During operation, only a force needs to be applied to the push rod 310 connected to one of the rotating shafts 320 to drive the other rotating shaft 320 to move synchronously through the linkage assembly, simplifying the operation process and improving the efficiency of picking up parts.

[0027] In this embodiment, a plurality of paddles 330 are provided on the rotating shaft 320, and the paddles 330 are configured one-to-one with a plurality of receiving slots 104. During batch heat sealing operations, each blister pack in the receiving slot 104 corresponds to its dedicated paddle 330. Driven by the rotating shaft 320, the multiple paddles 330 can simultaneously apply an ejection force to their respective blister packs, ensuring that each blister pack can be ejected smoothly and evenly. This one-to-one correspondence design ensures the consistency of the ejection action of multiple sets of blister packs, greatly improving the picking efficiency of batch production.

[0028] In this embodiment, the rotating shaft 320 is fixedly connected to the mold body 100 by a bearing 390.

[0029] The mold body 100 includes a base plate 110, a vertical plate assembly 120, and a top plate 130. One end of the vertical plate assembly 120 is fixedly connected to the base plate 110, and the other end is fixedly connected to the top plate 130. A groove 102 is formed on the top plate 130, and a receiving groove 104 is formed on the vertical plate assembly 120. A plurality of positioning adjustment blocks 121 are provided on the outer peripheral surface of the vertical plate assembly 120, and the positioning adjustment blocks 121 are threadedly connected to the vertical plate assembly 120. The mold body 100 is a combined structure consisting of a base plate 110, a vertical plate assembly 120, and a top plate 130, which ensures the stability of the overall structure. The base plate 110 serves as the basic load-bearing component, providing stable support for the entire mold. The vertical plate assembly 120 connects the base plate 110 and the top plate 130, forming the main frame of the mold. The receiving groove 104 on the vertical plate is specifically used to place the blister box. The groove 102 on the top plate 130 provides installation space for the adhesive strip 200, ensuring that the position of the adhesive strip 200 precisely corresponds to the blister box in the receiving groove 104, thus ensuring the smooth progress of the heat sealing process. The multiple positioning adjustment blocks 121 on the outer periphery of the upright plate assembly 120 are connected to the upright plate assembly 120 by threaded connection, which brings significant adjustment convenience and accuracy assurance: the operator can rotate the positioning adjustment block 121 and use the feed characteristics of the thread to change the length of its extension on the outer periphery of the upright plate assembly 120, thereby accurately adjusting the position of the mold body 100 on the mounting base or production equipment (sealing machine), ensuring the docking accuracy of the mold with upstream and downstream equipment, and reducing production failures caused by positioning deviation; at the same time, the multiple positioning adjustment blocks 121 are distributed in different positions, which can limit and fix the mold body 100 from multiple directions, enhance the stability of the mold during operation, avoid positional deviation caused by vibration and other factors, and further improve the consistency and pass rate of heat-sealed products.

[0030] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mold for heat-sealing blister packs and Tyvek paper, characterized in that, include: The mold body (100) has a plurality of grooves (102) formed in the first upper surface (101) of the mold body (100), and the bottom wall (103) forming the grooves (102) has a receiving groove (104) for accommodating the blister box. Adhesive strip (200), the adhesive strip (200) is accommodated in the groove (102), the middle part of the adhesive strip (200) has an opening (201) for the blister box to pass through, and the second upper surface (202) of the adhesive strip (200) is higher than the first upper surface (101) of the mold body (100). The adhesive strip (200) has a plurality of positioning posts (203) protruding on the side facing the mold body (100), and the bottom wall (103) forming the groove (102) has a plurality of positioning grooves (105), and the plurality of positioning posts (203) are embedded in the plurality of positioning grooves (105) one by one.

2. The mold for heat sealing blister packs and Tyvek paper according to claim 1, characterized in that, A gasket is also provided between the adhesive strip (200) and the bottom wall (103) forming the groove (102). The gasket has multiple through holes for the positioning post (203) to pass through, and the multiple through holes are provided one-to-one with the multiple positioning grooves (105).

3. The mold for heat sealing blister packs and Tyvek paper according to claim 1, characterized in that, The adhesive strip (200) is made of silicone and is integrally molded, and the outer peripheral wall of the adhesive strip (200) is attached to the inner peripheral wall forming the groove (102).

4. The mold for heat sealing blister packs and Tyvek paper according to claim 1, characterized in that, The mold body (100) is also provided with a plurality of positioning pins (106), which are distributed around the outer periphery of the adhesive strip (200) for limiting the positioning of the Tyvek paper.

5. The mold for heat sealing blister packs and Tyvek paper according to claim 1, characterized in that, It also includes a push rod assembly (300) disposed on the mold body (100) for ejecting the blister box located in the receiving groove (104).

6. The mold for heat sealing blister packs and Tyvek paper according to claim 5, characterized in that, The push rod assembly (300) includes a push rod (310), a rotating shaft (320), and a paddle (330). The rotating shaft (320) is rotatably mounted on the mold body (100). The paddle (330) is fixed to the rotating shaft (320) and located at the bottom of the receiving groove (104). The push rod (310) is located outside the mold body (100) and is fixedly connected to the end of the rotating shaft (320).

7. The mold for heat sealing blister packs and Tyvek paper according to claim 6, characterized in that, A pair of rotating shafts (320) are provided, the pair of rotating shafts (320) are arranged parallel to each other, and the pair of rotating shafts (320) rotate synchronously through a linkage component; The linkage assembly includes a connecting rod (340), a first rocker arm (350), and a second rocker arm (360). One end of the connecting rod (340) is rotatably connected to the first rocker arm (350) via a first rotating shaft (370), and the other end of the connecting rod (340) is rotatably connected to the second rocker arm (360) via a second rotating shaft (380). The end of the first rocker arm (350) away from the connecting rod (340) is fixedly connected to one of a pair of rotating shafts (320), and the end of the second rocker arm (360) away from the connecting rod (340) is fixedly connected to the other of a pair of rotating shafts (320).

8. The mold for heat sealing blister packs and Tyvek paper according to claim 6 or 7, characterized in that, The rotating shaft (320) is provided with a plurality of the aforementioned paddles (330), and the plurality of the aforementioned paddles (330) are respectively provided with a plurality of the aforementioned receiving grooves (104).

9. The mold for heat sealing blister packs and Tyvek paper according to claim 6, characterized in that, The rotating shaft (320) is fixedly connected to the mold body (100) by a bearing (390).

10. The mold for heat sealing blister packs and Tyvek paper according to claim 1, characterized in that, The mold body (100) includes a base plate (110), a vertical plate assembly (120), and a top plate (130). One end of the vertical plate assembly (120) is fixedly connected to the base plate (110), and the other end is fixedly connected to the top plate (130). The groove (102) is formed on the top plate (130), and the receiving groove (104) is formed on the vertical plate assembly (120). The outer peripheral surface of the upright plate assembly (120) is provided with a plurality of positioning adjustment blocks (121), and the positioning adjustment blocks (121) are threadedly connected to the upright plate assembly (120).

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