Capsule cutting and separating device

Abstract

The invention discloses a capsule cutting and separating device which is characterized in that an arc baffle wraps the peripheral surface of the middle of a roller provided with capsule containing grooves, and mold column mounting holes corresponding to the capsule containing grooves are formed in the portions, on the outer sides of the two ends of the capsule containing grooves, of a roller body respectively; the inner surface of the arc baffle and the peripheral surface of the roller provided with the capsule accommodating groove form a capsule channel; the distance between the inner surface of the arc baffle and the bottom of the capsule containing groove is larger than the diameter of the capsule, and the distance between the inner surface of the arc baffle and the peripheral face of the roller provided with the capsule containing groove is smaller than the diameter of the capsule. A gap with the distance larger than the axial length and the diameter of the slitter edge is formed between the side end face of the arc baffle and the orifice end face of the die column mounting hole to form a slitter edge separation channel, and an outlet of the capsule channel at the front end of the arc baffle is provided with a certified capsule collecting channel. The authentic capsules firstly separated from the cutting die column are collected after being conveyed for a certain distance in the capsule channel, and the waste edges which are separated later are separated and collected firstly, so that the problem that the waste edges and the authentic capsules cannot be completely separated is solved.

Description

Technical Field

[0001] This invention relates to the field of capsule manufacturing equipment, and more particularly to a capsule cutting and separating device for cutting and removing waste edges from capsules. Background Technology

[0002] Pharmaceutical capsules consist of interlocking capsule bodies and caps, and their manufacturing process mainly includes steps such as sol-gel preparation, dipping, demolding, and cutting. For example... Figure 1 The image shows a capsule blank (including the capsule body and capsule cap) being demolded from a mold column. The open end has an irregular edge; cutting involves removing this irregular open end as excess waste. Existing capsule cutting devices for removing waste edges include a roller, a cutting mold column, end-face cams, and a cutter. The outer circumferential surface of the roller's center has several capsule receiving grooves, with suction holes at the bottom of the grooves. Mold column mounting holes corresponding to the capsule receiving grooves are respectively provided on the outer sides of the roller body at both ends of the capsule receiving grooves. The length direction of the capsule receiving groove, the center line of the mold column mounting holes, and the center line of the roller are in the same direction. An end-face cam is coaxially mounted at each end of the roller, and the end-face cams are fixedly mounted. The roller can rotate relative to the end-face cams. The cutting mold column is housed within the mold column mounting holes. Inside the mounting hole, the front end of the cutting die column is shaped to fit the inner cavity of the capsule. As the cutting die column moves forward, it inserts into the inner cavity of the capsule blank housed in the capsule receiving slot, allowing the capsule blank to fit onto the cutting die column. A rolling element is located at the rear end of the cutting die column, moving in conjunction with the end-face cam track surface. When the roller rotates relative to the end-face cam, the end-face cam drives the cutting die column to move axially within the die column mounting hole. The cutter is located radially to the side of the roller, cutting the capsule blank fitted onto the front end of the cutting die column to form waste edges and the main capsule product. The waste edge is much shorter than the main capsule product. Based on the order in which the waste edge and the main capsule product detach from the cutting die column, a main capsule collection channel and a waste edge collection channel are sequentially set on the side of the roller. The main capsule product is collected first, followed by the waste edge, achieving separate collection of the waste edge and the main capsule product. However, because the waste edge is extremely lightweight, this separation and collection mechanism is susceptible to static electricity and airflow during collection, causing it to be attracted to the main capsule product and collected together from the main capsule collection channel, making complete separation and collection impossible. Summary of the Invention

[0003] The purpose of this invention is to solve the shortcomings of existing drum-type capsule cutting devices that cannot completely separate and collect waste edges and genuine capsules, and to provide a capsule cutting and separation device that can achieve efficient and complete separation and collection of waste edges and genuine capsules.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a capsule cutting and separating device, comprising a roller, a cutting die column, an end face cam, and a cutter. A plurality of capsule receiving grooves are circumferentially formed on the outer circumferential surface of the middle part of the roller, with suction holes at the bottom of the grooves. Die column mounting holes corresponding to the capsule receiving grooves are respectively provided on the outer sides of the roller body at both ends of the capsule receiving grooves. The length direction of the capsule receiving groove, the center line of the die column mounting holes, and the center line of the roller are in the same direction. The width of the capsule receiving groove opening is greater than the capsule diameter. An end face cam is coaxially provided at each end of the roller, and the end face cams are fixedly set. The roller can rotate relative to the end face cams. The cutting die column is housed in the die column mounting hole and can move axially. The front end of the cutting die column is shaped to fit the inner cavity of the capsule. When the cutting die column moves forward, it can insert into the inner cavity of the capsule blank housed in the capsule receiving groove, allowing the capsule blank to be sleeved on the cutting die column. A rolling element is provided at the rear end of the cutting die column. The rolling element moves in conjunction with the track surface of the end face cam. When the roller rotates relative to the end face cam, the end face cam drives the cutting die column to move axially within the die column mounting hole. The device is characterized in that the capsule cutting and separating device further includes an arc-shaped baffle fixedly mounted on the outer circumferential surface of the roller with the capsule receiving groove, forming a capsule channel between the inner surface of the arc-shaped baffle and the outer circumferential surface of the roller with the capsule receiving groove; the distance between the inner surface of the arc-shaped baffle and the bottom of the capsule receiving groove is greater than the capsule diameter in the radial direction of the roller, and the distance between the inner surface of the arc-shaped baffle and the outer circumferential surface of the roller with the capsule receiving groove is less than the capsule diameter; a gap with a distance greater than the axial length and diameter of the waste edge is formed between the side end face of the arc-shaped baffle and the end face of the mounting hole of the mold column, forming a waste edge separation channel for the waste edge to pass through; the front and rear positions are set according to the rotation direction of the roller, the position of the set point on the roller that arrives first is the rear, and the position that arrives later is the front; in the rotation direction of the roller, the arc-shaped baffle is located in front of the cutter, and a capsule collection channel is set on the side of the capsule channel outlet at the front end of the arc-shaped baffle.

[0005] This invention is installed on a capsule cutting machine. The roller is located below the material feeding mechanism of the cutting machine's hopper device. Driven by a rotary drive mechanism, the roller rotates relative to a fixed end face cam. The capsule receiving slot receives the dropped capsule blanks sequentially below the material feeding mechanism. As the roller rotates, the cutting die pillars in the die pillar mounting holes at both ends of the capsule receiving slot move forward under the drive of the end face cam, bringing their front ends closer together. During the forward movement of the cutting die pillars, the front end of the cutting die pillar opposite to the opening of the capsule blank inserts into the inner cavity of the capsule blank, and the front end of the cutting die pillar opposite to the closed end of the capsule blank presses against the closed end of the capsule blank, so that the inner wall of the closed end of the capsule blank is in contact with the front end of the cutting die pillar. Then, the cutting blade cuts the capsule blank into waste edges and the correct capsule product. After cutting, as the roller continues to rotate, the cutting die moves backward, carrying the waste edge and the capsule product into the capsule channel. As the cutting die moves backward, the waste edge is blocked by the end face of the die mounting hole, causing both the waste edge and the capsule product to detach from the front end of the cutting die. The capsule product detaches from the cutting die first, and the arc-shaped baffle confines it within the capsule receiving groove. The waste edge, after detaching from the cutting die, is thrown out of the capsule receiving groove under centrifugal force and enters the waste edge separation channel between the side end face of the arc-shaped baffle and the end face of the die mounting hole. After passing through the waste edge separation channel, it enters the waste edge collection channel, thus separating the waste edge from the capsule product. The capsule product continues to rotate with the roller in the capsule receiving groove until it reaches the capsule channel outlet, where it detaches and falls into the capsule product collection channel.

[0006] As a supplement and improvement, the present invention also includes the following additional technical features.

[0007] The waste edge separation channel is equipped with fixed blocks. The blocks help to block the waste edges so that they can smoothly enter the waste edge collection channel, ensuring the separation and successful collection of waste edges.

[0008] The width of the front section of the arc baffle is smaller than the width of the rear section, and the waste edge separation channel is formed between the side end face of the front section of the arc baffle and the end face of the mold column mounting hole.

[0009] The inner surface of the front section of the arc baffle is provided with two side edges protruding towards the roller, which provides lateral restraint for the genuine capsule and assists in the separation of the waste edge and the genuine capsule.

[0010] The arc-shaped baffle and the stop block are supported and fixed using the same mounting bracket.

[0011] The cutter is a disc-type cutter with the blade located on the outer edge. The cutter is mounted on a rotating shaft, and the axial direction of the cutter is the same as that of the cutting mold column. The rotating shaft is supported by bearings and is connected to a drive motor through a transmission mechanism. The drive motor drives the shaft to rotate, and the cutting is achieved by the rotation of the cutter. The rotation of the cutter drives the capsule blank to rotate, thus completing the circumferential cutting.

[0012] The cutting die column has a cutting groove at its front end for accommodating the cutting blade, which allows the cutting blade to cut through the capsule blank without damaging the blade, and also allows the cutting blade to better drive the capsule blank to rotate.

[0013] The present invention has the following beneficial effects: by using an arc-shaped baffle to wrap around the outer periphery of the roller with the capsule receiving groove to form a capsule channel, the capsule product formed by cutting is limited, and a gap is set between the side end face of the arc-shaped baffle and the end face of the cutting mounting hole to form a waste edge channel, the capsule product that comes out of the cutting die first is limited, so that the waste edge that comes out of the cutting die later is separated and collected first, and the capsule product is collected after being transported in the capsule channel for a certain distance. This ensures efficient and complete separation of waste edge and capsule product, and the waste edge will not be absorbed by the capsule product and collected in the capsule product collection container. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the capsule preform structure.

[0015] Figure 2 This is a front view structural diagram of the present invention.

[0016] Figure 3 This is a side view of the structure after removing the end face cam of the present invention.

[0017] Figure 4 for Figure 2 A partial sectional view of AA.

[0018] Figure 5 for Figure 3 BB-direction sectional view.

[0019] Figure 6 for Figure 5 A magnified view of a portion of point a.

[0020] Figure 7 for Figure 3 CC-direction sectional view.

[0021] Figure 8 for Figure 7 A magnified view of a section at point b.

[0022] Figure 9 This is a schematic diagram of the structure of the arc baffle, bracket, and stop block combination of the present invention. Detailed Implementation

[0023] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The described embodiments are only for illustration and explanation of the present invention and do not constitute the only limitation of the present invention.

[0024] like Figure 2As shown in Figure 9, this invention is a capsule cutting and separating device, comprising a roller 4, a cutting die column 3, an end face cam 2, a disc-type cutter 10, and an arc-shaped baffle 7. A plurality of capsule receiving grooves 43 are circumferentially formed on the outer circumferential surface of the middle part of the roller. Each capsule receiving groove has a suction hole 44 at its bottom, which is connected to an external vacuum pump via a pipeline. By suction, a negative pressure is created in the capsule receiving groove, allowing the capsule blanks falling into the groove to laterally adhere to it. The width of the capsule receiving groove opening is greater than the capsule diameter, and the length direction of the capsule receiving groove is in the same direction as the center line of the roller. Two concentric rings of protruding ribs are distributed along the axial direction of the outer circumference of the outer roller at both ends of the capsule receiving slot. Each side has a first protruding rib ring 41 and a second protruding rib ring 42, which are arranged opposite each other with the capsule receiving slot as the center. The first protruding rib ring has a first mold post mounting hole 411, and the second protruding rib ring has a second mold post mounting hole 422. The positions and numbers of the first and second mold post mounting holes 411 and 422 correspond to the capsule receiving slot 43, and the center lines of the first and second mold post mounting holes are in the same direction as the length of the capsule receiving slot. An end-face cam 2 is coaxially mounted at each end of the roller. The end-face cams are fixedly mounted on the cutting machine frame. The roller is supported by bearings and connected to a motor via a transmission mechanism, allowing it to rotate relative to the end-face cams.

[0025] The cutting die column 3 is housed in the first and second die column mounting holes and can move axially. The front end of the cutting die column is shaped to fit the inner cavity of the capsule. When the cutting die column moves forward, it can be inserted into the inner cavity of the capsule blank contained in the capsule receiving groove, so that the capsule blank is sleeved on the cutting die column. The rear end of each cutting die column 3 is supported by a short shaft and a bearing 6 is installed as a rolling element. The outer ring of the bearing moves in conjunction with the end face cam track surface. When the roller rotates relative to the end face cam, the end face cam drives the cutting die column to move axially forward in the die column mounting hole. The second convex ring 42 of the roller is provided with a limiting slot 421 that communicates with the second die column mounting hole 422. The outer circumferential surface of the rear section of the cutting die column is provided with a guide limiting convex 11. The guide limiting convex 11 is embedded in the limiting slot 421 to guide the axial movement of the cutting die column and limit its circumferential movement. A spring 5 is fitted on the outer side of the cutting die column. One end of the spring 5 abuts against the guide limiting protrusion, and the other end abuts against the end face of the first protrusion ring 41. After the cutting die column 3 moves forward, it compresses the spring 5 to generate elastic force. The spring force forms a backward supporting force on the cutting die column 3, so that the outer ring of the bearing 6 always cooperates with the end face cam track surface, driving the cutting die column 3 to move backward.

[0026] The cutter 10 is located radially to the side of the roller 4, cutting the capsule blank 1 fitted onto the front end of the cutting die column to form waste edges and finished capsules. The cutter blade is located on the outer edge, and the cutter is mounted on a rotating shaft through a central hole. The cutter's axial direction is the same as the cutting die column's axial direction. The rotating shaft is supported by bearings and is connected to a drive motor via a transmission mechanism. The drive motor drives the shaft to rotate, and the cutting is achieved by the rotation of the cutter. The rotation of the cutter drives the capsule blank to rotate, completing the circumferential cutting. A cutting groove is provided at the front end of the cutting die column corresponding to the cutter to accommodate the cutter blade.

[0027] The arc-shaped baffle 7 is fixedly supported and installed by the mounting bracket 9 and is wrapped around the outer circumference of the roller with the capsule receiving groove 43. The mounting bracket 9 is fixedly installed on the frame of the capsule cutting machine. In the radial direction of the roller, the distance between the inner surface of the arc-shaped baffle and the bottom of the capsule receiving groove is greater than the capsule diameter, and the distance between the inner surface of the arc-shaped baffle and the outer circumference of the roller with the capsule receiving groove is less than the capsule diameter. A capsule channel is formed between the inner surface of the arc-shaped baffle and the outer circumference of the roller with the capsule receiving groove. The front and rear positions are set according to the rotation direction of the roller. The position reached first on the roller is the rear, and the position reached later is the front. In the rotation direction of the roller, the arc-shaped baffle 7 is located in front of the cutter 10. The width of the front section of the arc-shaped baffle is less than the width of the rear section. The gap between the side end face of the rear section of the arc-shaped baffle and the end face of the first mold column mounting hole is less than the axial length and diameter of the waste edge. The gap between the side end face of the front section of the arc-shaped baffle and the end face of the first mold column mounting hole is greater than the axial length and diameter of the waste edge, forming a waste edge separation channel for the waste edge to pass through. A capsule collection channel is provided on the side of the capsule channel outlet at the front end of the arc-shaped baffle 7. A fixed stop 8 is provided in the waste edge separation channel, which is fixedly installed on the bracket 9. The stop 8 assists in blocking the waste edge from smoothly entering the waste edge collection channel, ensuring waste edge separation and successful collection. The inner surface of the front section of the arc-shaped baffle 7 has two protruding baffle edges 71 on both sides, which laterally limit the capsules and assist in the separation of waste edges and capsules.

[0028] In use, the roller is positioned below the material feeding mechanism of the cutting machine's hopper device. Driven by a motor through a transmission mechanism, the roller rotates relative to a fixed end-face cam. The capsule receiving slot receives the falling capsule blanks sequentially below the material feeding mechanism. As the roller rotates, the cutting die pillars at both ends of the capsule receiving slot move forward under the drive of the end-face cam, bringing their front ends closer together. During this forward movement, the front end of the cutting die pillar opposite the opening of the capsule blank inserts into the inner cavity of the capsule blank, while the front end of the cutting die pillar opposite the closed end of the capsule blank presses against the closed end, causing the inner wall of the closed end of the capsule blank to fit against the front end of the cutting die pillar. The cutting blade then cuts the capsule blank into waste edges and the finished capsule. After cutting, as the roller continues to rotate, the cutting die pillar moves backward under the action of a spring, carrying the waste edges and the finished capsule into the capsule channel.

[0029] As the cutting die column moves backward, the waste edge is blocked by the end face of the mounting hole of the first die column, causing the capsule and the waste edge to exit sequentially from the front end of the cutting die column. The capsule first exits from the cutting die column, and the arc-shaped baffle confines the capsule that has exited from the cutting die column first within the capsule receiving groove. After exiting the cutting die column, the waste edge, under the action of centrifugal force, is thrown out of the capsule receiving groove and enters the waste edge separation channel between the side end face of the arc-shaped baffle and the end face of the mounting hole of the die column. After passing through the waste edge separation channel, it enters the waste edge collection channel, thus achieving the separation of the waste edge and the capsule. The capsule continues to rotate with the roller in the capsule receiving groove until it reaches the capsule channel outlet, where it exits the capsule receiving groove and falls into the capsule collecting channel.

Claims

1. A capsule cutting and separating device, comprising a roller, a cutting die column, an end face cam, and a cutter. A plurality of capsule receiving grooves are circumferentially formed on the outer circumferential surface of the middle part of the roller, with suction holes at the bottom of the grooves. Die column mounting holes corresponding to the capsule receiving grooves are respectively provided on the outer sides of the roller body at both ends of the capsule receiving grooves. The length direction of the capsule receiving grooves, the center line of the die column mounting holes, and the center line of the roller are in the same direction. The width of the capsule receiving groove opening is greater than the capsule diameter. An end face cam is coaxially provided at each end of the roller, and the end face cams are fixedly set. The roller can rotate relative to the end face cams. The cutting die column is housed in the die column mounting hole and can move axially. When the cutting die column moves forward, it can insert into the inner cavity of the capsule blank housed in the capsule receiving groove, so that the capsule blank is sleeved on the cutting die column. A rolling element is provided at the rear end of the cutting die column, and the rolling element moves in cooperation with the track surface of the end face cam. When the roller rotates relative to the end face cam, the end face cam drives the cutting die column to move axially within the die column mounting hole. The cutter is located radially to the side of the roller. The device is characterized in that: The capsule cutting and separating device further includes an arc-shaped baffle fixedly mounted on the outer circumferential surface of the roller with the capsule receiving groove. A capsule channel is formed between the inner surface of the arc-shaped baffle and the outer circumferential surface of the roller with the capsule receiving groove. The distance between the inner surface of the arc-shaped baffle and the bottom of the capsule receiving groove in the radial direction of the roller is greater than the capsule diameter, and the distance between the inner surface of the arc-shaped baffle and the outer circumferential surface of the roller with the capsule receiving groove is less than the capsule diameter. A waste edge separation channel for waste edge passage is formed between the side end face of the arc-shaped baffle and the end face of the mold column mounting hole, with a gap greater than the axial length and diameter of the waste edge. The front and rear positions are set according to the rotation direction of the roller, with the position of the set point on the roller arriving first being the rear and the position arriving later being the front. In the rotation direction of the roller, the arc-shaped baffle is located in front of the cutter. A capsule collection channel is provided on the side of the capsule channel outlet at the front end of the arc-shaped baffle.

2. The capsule cutting and separating device according to claim 1, characterized in that: The waste edge separation channel is equipped with fixed blocks.

3. A capsule cutting and separating device according to claim 1 or 2, characterized in that: The width of the front section of the arc baffle is smaller than the width of the rear section, and the waste edge separation channel is formed between the side end face of the front section of the arc baffle and the end face of the mold column mounting hole.

4. The capsule cutting and separating device according to claim 3, characterized in that: The inner surface of the front section of the arc baffle is provided with flanges protruding toward the roller on both sides.

5. The capsule cutting and separating device according to claim 2, characterized in that: The arc-shaped baffle and the stop block are supported and fixed using the same mounting bracket.

6. The capsule cutting and separating device according to claim 1, characterized in that: The cutter is a disc-type cutter with the cutting edge located on the outer edge. The cutter is mounted on a rotating shaft, and the axial direction of the cutter is the same as the axial direction of the cutting die column. The rotating shaft is supported and mounted by bearings.

7. The capsule cutting and separating device according to claim 6, characterized in that: The cutting die column has a cutting groove at its front end for accommodating the cutting blade.

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