Hollow capsule demolding device

Abstract

This invention provides a hollow capsule demolding device, including a platform. Each row of glue-dipping mold rods on the platform has a material discharge groove. A collection box is provided below the platform corresponding to the material discharge grooves. A crossbar is slidably arranged on both sides of each material discharge groove along its length. The platform is equipped with a driving mechanism to drive the two crossbars to slide in opposite directions. Each of the two crossbars has a strip-shaped airbag on its opposite side, with an inflation port and an deflation port, each equipped with a valve. In this invention, two crossbars and two airbags are provided for each row of glue-dipping mold rods. When the two airbags are inflated, they contact the capsule shell formed after the glue-dipping mold rods have been dipped in glue. The two crossbars slide in opposite directions, causing the airbags to slide accordingly. The friction between the airbags and the capsule shell loosens the capsule shell, facilitating its release from the mold rods and improving the demolding efficiency and quality.

Description

Technical Field

[0001] This utility model belongs to the field of hollow capsule production, and in particular relates to a hollow capsule demolding device. Background Technology

[0002] Empty capsules consist of a cap and a body, made from pharmaceutical-grade gelatin and excipients. They are mainly used to contain solid and liquid medications, such as homemade powders, health products, and pharmaceutical preparations.

[0003] In the production of empty capsules, dipping is an important step in the capsule forming process. Its main function is to move the cylindrical mold rod in the dipping assembly downwards and into the slurry, so that the prepared slurry coats the cylindrical mold rod. After dipping is completed, the dipping assembly is sent to the condensing equipment by the conveying equipment to condense and solidify the dipped slurry to form the capsule shell.

[0004] After the capsule is formed, demolding is required. Currently, the demolding method is commonly used. For the release demolding method, a demolding mechanism is set up on the glue-dipping assembly in advance. The demolding mechanism includes a push plate and a push cylinder. The bottom end of the cylindrical mold rod protrudes through the push plate. After the cylindrical mold rod is dipped in glue and solidifies to form a capsule shell, the push cylinder pushes the push plate down. The push plate pushes the capsule shell on the mold rod to achieve the demolding operation.

[0005] However, this push-down demolding operation has the following problems: First, several assembly holes need to be opened on the push plate corresponding to the mold rod. The assembly holes and the mold rod are clearance fit, resulting in small positional tolerances for the assembly holes, making the manufacturing process difficult and costly. Furthermore, the existence of dimensional and positional tolerances makes it difficult to ensure that every assembly hole can be aligned with the mold rod. After assembly, some assembly holes and the mold rod are misaligned. Since the capsule shell wall is relatively thin, sometimes a large gap between the misaligned assembly holes and the mold rod occurs, causing grinding of the capsule. In addition, because the capsule shell is formed by the mold rod dipping in slurry and solidifying, and the capsule shell is tightly fitted onto the mold rod, push-down demolding can sometimes cause local cracking of the capsule shell, affecting the demolding quality. Utility Model Content

[0006] In view of this, the present invention aims to provide a hollow capsule demolding device so that the capsule shell can be removed from the mold rod on which the capsule is dipped in glue, ensuring proper demolding.

[0007] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0008] A hollow capsule demolding device includes a platform, wherein each row of glue-dipping mold rods on the platform is provided with a material discharge groove, and a collection box is provided below the platform corresponding to the material discharge groove.

[0009] The platform has a crossbar slidably installed on both sides of each material chute along the length of the chute. The platform is equipped with a drive mechanism to drive the two crossbars to slide in opposite directions. The two crossbars have strip-shaped airbags on their opposite sides. The airbags have an inflation port and an deflation port, and valves are installed at the inflation port and the deflation port respectively.

[0010] Furthermore, the drive mechanism includes two racks and a gear. The two racks are arranged opposite each other and are each mounted on the ends of two crossbars. The gear is arranged between the two racks and meshes with them. The gear is mounted on the platform and is driven to rotate by a motor.

[0011] Furthermore, the motor is arranged on the bottom surface of the platform.

[0012] Furthermore, the platform is provided with sliding sleeves at the beginning and end of the crossbar, and the sliding sleeves have corresponding grooves on the crossbar, and the crossbar is passed through the two sliding sleeves.

[0013] Furthermore, the airbag has a circular cross-section.

[0014] Compared with the prior art, the hollow capsule demolding device of this utility model has the following advantages:

[0015] In this invention, each row of glue-dipping mold rods is provided with two crossbars and two air bladders. When the two air bladders are inflated, they contact the capsule shell formed after the glue-dipping mold rods are dipped in glue. The two crossbars slide in opposite directions, and the air bladders slide accordingly. The friction between the air bladders and the capsule shells loosens the capsule shells, making it easier for the capsule shells to fall off the mold rods, thereby improving the efficiency and quality of capsule shell demolding. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0017] Figure 1 This is a front view of a hollow capsule demolding device according to an embodiment of the present invention;

[0018] Figure 2 This is a top view of a hollow capsule demolding device according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the sliding sleeve in this embodiment;

[0020] Figure 4 A structural diagram is provided for the integrated sliding sleeve.

[0021] Figure 5 This is a schematic diagram illustrating the application of a hollow capsule demolding device described in this embodiment.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Support; 2-Collection box; 3-Motor; 4-Platform; 41-Discharge chute; 5-Sliding sleeve; 51-Sliding groove; 52-Wing plate; 6-Crossbar; 7-Airbag; 8-Gear; 9-Mold assembly; 91-Mold rod; 92-Push plate; 94-Cylinder; 10-Conveying device; 11-Rack; 12-Capsule shell. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 , 2 As shown, a hollow capsule demolding device includes a platform 4, which is supported by a bracket 1. Several material discharge grooves 41 are arranged side by side on the platform 4. The material discharge grooves 41 are rectangular grooves that penetrate the top and bottom surfaces of the platform 4. The material discharge grooves 41 are arranged one-to-one with the rows of glue-dipping mold rods 91 on the capsule glue-dipping mold assembly 9. A collection box 2 is set below the platform 4 corresponding to the material discharge grooves 41 to collect the demolded capsules.

[0026] Platform 4 has a crossbar 6 slidably mounted on both sides of each material chute 41 along the length of the chute 41. The crossbar 6 is preferably a rectangular plate structure. Platform 4 is provided with a drive mechanism to drive the two crossbars 6 to slide in opposite directions. Under the action of the drive mechanism, the two crossbars 6 slide along their respective length directions in opposite directions. The two crossbars 6 have strip-shaped airbags 7 on their opposite sides. The airbags 7 can be fixed to the crossbars 6 by adhesive. The cross-section of the airbag 7 is preferably circular. The airbag 7 has an inflation port and an deflation port (not shown in the figure). The inflation port and the deflation port are respectively equipped with valves. The valve of the inflation port is connected to an inflation device to inflate the airbag 7, and the valve of the deflation port can deflate the airbag 7.

[0027] In this utility model, the driving mechanism includes two racks 11 and a gear 8. The two racks 11 are arranged facing each other and are each mounted on the ends of two crossbars 6. The gear 8 is arranged between the two racks 11 and is rotatably mounted on the platform 4. Both racks 11 mesh with the gear 8. The rotation power of the gear 8 comes from the motor 3. When the gear 8 rotates, it drives the two racks 11 to slide in opposite directions, causing the two crossbars 6 to slide along their respective length directions. The sliding directions of the two crossbars 6 are opposite, thereby causing the two airbags 7 to slide in opposite directions.

[0028] In this invention, a motor can be matched to each gear 8, such as... Figure 1 As shown, all gears 8 can also be driven simultaneously by a single motor through a gear transmission structure. This structure is a conventional design and will not be described in detail here. Preferably, the motor is located on the bottom surface of the platform 4.

[0029] In this invention, a sliding pair is provided between each crossbar 5 and the platform 4 to enable the crossbar 5 to slide linearly along its respective length direction, which is also the length direction of the material drop chute 41. The sliding pair includes two sliding sleeves 5 mounted on the platform 4, with the positions of the two sliding sleeves 5 corresponding to the beginning and end of the crossbar 6. The two sliding sleeves 5 have corresponding grooves 51 on the crossbar 6, through which the crossbar 6 passes and slides along the grooves 51. In this invention, the sliding sleeve 5 is preferably a U-shaped groove structure that matches the crossbar, such as... Figure 3 As shown, a wing plate 52 is provided with its opening facing outwards. Screws are used to connect and fix the wing plate 52 to the platform, thereby fixing the sliding sleeve 5 and the platform 4 together. Preferably, depending on the size of the installation space, adjacent crossbars can be installed together using sliding sleeves to save installation space, for example... Figure 4 The structure shown is a structure in which two adjacent crossbars are connected by a sliding sleeve. Alternatively, multiple or even all the sliding sleeves 5 corresponding to the first end and all the sliding sleeves corresponding to the last end can be connected separately to meet the space requirements for sliding connection between adjacent crossbars 5 and the platform in a small space.

[0030] The working principle of this utility model is as follows: Figure 5 As shown, after the slurry dipped in the mold rod 91 of the mold assembly 9 solidifies and forms the capsule shell 12, the mold assembly 9 moves to this device along with the conveyor on the production line. The cylinder 94 of the mold assembly 9 extends, pushing the push plate 92 and the mold rod 91 downwards until the capsule shell 12 on the mold rod 91 extends between the two airbags 7 of the corresponding drop groove 41. The inflation device inflates a certain amount of gas into the airbags 7, causing the airbags 7 to expand. At this time, the outer surfaces of the two airbags 7 contact the capsule shell 12 and exert appropriate pressure on the capsule shell 12. Then, the crossbars 6 corresponding to the two airbags 7 slide in opposite directions, causing the two airbags 7 to slide in opposite directions. Using the friction between the airbags 7 and the capsule shell 12, the capsule shell 12 rotates. At this time, the capsule shell 12 loosens relative to the mold rod 91, the cylinder 94 retracts, the mold rod 91 moves upwards and separates from the capsule shell 12, the airbags 7 deflate, and the capsule shell 12 falls down and is collected in the collection box 2 through the drop groove 41.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for demolding a hollow capsule, characterized in that: The platform (4) includes a material discharge groove (41) on each row of glue-dipping mold rods (91) on the corresponding capsule glue-dipping mold assembly (9), and a collection box (2) is set below the platform (4) corresponding to the material discharge groove (41); A crossbar (6) is slidably set on both sides of each material chute (41) and along the length of the material chute (41). The platform (4) is equipped with a driving mechanism to drive the two crossbars (6) to slide in opposite directions. The two crossbars (6) are respectively provided with strip-shaped airbags (7) on their opposite sides. The airbags (7) are provided with an inflation port and an deflation port, and valves are provided at the inflation port and the deflation port respectively.

2. A device for demoulding a hollow capsule according to claim 1, characterized in that: The drive mechanism includes two racks (11) and a gear (8). The two racks (11) are arranged opposite each other and are installed at the ends of two crossbars (6). The gear (8) is arranged between the two racks (11) and meshes with the two racks (11). The gear (8) is set on the platform (4) and is driven to rotate by the motor (3).

3. A device for demoulding a hollow capsule according to claim 2, characterised in that: The motor (3) is arranged on the bottom surface of the platform (4).

4. A device for demolding a hollow capsule according to claim 1, characterized in that: The platform (4) has sliding sleeves (5) at the beginning and end of the crossbar (6), and the sliding sleeves (5) have corresponding grooves (51) on the crossbar (6). The crossbar (6) is passed through by the two sliding sleeves (5).

5. A device for demolding a hollow capsule according to claim 1, characterized in that: The airbag (7) has a circular cross-section.

Images