A tablet press for making polypropylene powder tablets

Abstract

This utility model discloses a tablet press for polypropylene powder tableting, including a frame; a worktable is fixedly installed on the top of the frame, a feeding device is fixedly installed at the center of the top of the worktable, and a tablet pressing device is arranged behind the top of the worktable; the feeding device includes a front feeding mounting seat, a rear feeding mounting seat, and a lower die mounting seat, and also includes a ball screw mechanism and a feeding power device; the feeding power device is driven and connected to the lower die mounting seat through the ball screw mechanism; a lower pressing die is fixedly installed on the top of the lower die mounting seat, and the top of the lower pressing die has a lower die cavity for placing powder; the tablet pressing device includes an upper mounting plate; this utility model uses a cylinder as a power source, which makes it easy to keep the force of each punch consistent; at the same time, the feeding device is used to prevent the worker's hands from being under the tablet pressing device, thereby preventing worker hand injuries during operation.

Description

Technical Field

[0001] This utility model relates to the field of tablet presses, specifically a tablet press for making polypropylene powder tablets. Background Technology

[0002] The tablet press is related to the technical field of polypropylene quality inspection equipment in the downstream of petrochemical industry. After polypropylene powder is added in a certain amount by human intervention, the tablet press will press the powder into tablets for the detection of ethylene content in polypropylene powder, providing more accurate detection data for production process control.

[0003] For example, patent CN220492577U discloses a positionable powder tablet press, including: a base, which includes a worktable, a frame, and a lead screw, with an upper pressure head at the bottom of the lead screw and a lower pressure head at the upper end of the worktable; a mold, which includes a mold sleeve, a mold pressing head, and a mold base, with the mold sleeve having an extrusion cavity and a closed cavity, the extrusion cavity and the closed cavity being connected and the cross-sectional area of ​​the closed cavity being larger than that of the extrusion cavity; wherein, the lower end of the upper pressure head is provided with an upper positioning groove adapted to the mold pressing head, and the upper end of the lower pressure head is provided with a lower positioning groove adapted to the mold base, and the upper positioning groove and the lower positioning groove are coaxially arranged.

[0004] The positioning powder tablet press provided by the above patent can eliminate the error of manual judgment of placement position and achieve precise positioning of stamping die, thereby effectively avoiding damage to the die caused by placement position deviation and ensuring the quality of powder sample tableting; however, the disadvantage of the above patent is that it requires manual tableting, which is inconvenient to operate.

[0005] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a tablet press for polypropylene powder to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A tableting machine for polypropylene powder tableting includes a frame; a worktable is fixedly installed on the top of the frame, a feeding device is fixedly installed at the top center of the worktable, and a tableting device is arranged behind the top of the worktable; the feeding device includes a front feeding mounting seat, a rear feeding mounting seat, and a lower die mounting seat, and also includes a ball screw mechanism and a feeding power device; the feeding power device is driven and connected to the lower die mounting seat through the ball screw mechanism; a lower pressing die is fixedly installed on the top of the lower die mounting seat, and the top of the lower pressing die has a lower die cavity for placing powder; the tableting device includes an upper mounting plate, which is located above the feeding device, and a tableting cylinder is vertically fixedly installed downwards at the top center of the upper mounting plate, the output shaft of the tableting cylinder vertically passes through the upper mounting plate and is fixedly connected to the top center of the upper die mounting seat; an upper pressing die is fixedly installed at the bottom center of the upper die mounting seat, and the bottom of the upper pressing die is configured to cooperate with the lower die cavity.

[0009] Furthermore, the forward feeding mounting base and the rear feeding mounting base are fixedly installed on the top of the worktable; two first guide shafts are fixedly installed between the forward feeding mounting base and the rear feeding mounting base, and the first guide shafts are arranged along the front-back direction; two sliding seats are fixedly installed below the lower mold mounting base, and the left and right sides of the sliding seats are slidably connected to the first guide shafts through first linear bearings.

[0010] Furthermore, the ball screw mechanism includes a screw and a screw nut. The front and rear ends of the screw are rotatably connected to the feed mounting seat and the rear feed mounting seat respectively through bearings. The screw nut is fixedly installed in the middle of the sliding seat on the rear side of the lower die mounting seat.

[0011] Furthermore, the feeding power device includes a feeding motor and a synchronous belt transmission mechanism. The feeding motor is fixedly installed at the front end of the motor mounting plate, while the motor mounting plate is fixedly installed at the rear side of the rear feeding mounting seat. The feeding motor drives the lead screw of the ball screw mechanism through the synchronous belt transmission mechanism, thereby driving it to rotate.

[0012] Furthermore, the synchronous belt drive mechanism includes a synchronous belt, a driving synchronous pulley, and a driven synchronous pulley. The driving synchronous pulley is fixed on the output shaft of the feeding motor. The driven synchronous pulley is fixedly installed on the feeding mounting base after the rear end of the lead screw passes through it. The driving synchronous pulley is driven to rotate by the synchronous belt.

[0013] Furthermore, the bottom four corners of the upper mounting plate are fixedly mounted on the top of the workbench by columns.

[0014] Furthermore, a second guide shaft is also fixedly mounted vertically upward on the top of the upper mold mounting base. The second guide shaft passes through the upper mounting plate and is slidably connected to the upper mounting plate through a second linear bearing.

[0015] Furthermore, the feeding device also includes a pressure plate, which consists of two plates located on the outer sides of the two first guide shafts. A sliding groove is provided on the outer side of the sliding seat, and the sliding seat is slidably connected to the pressure plate through the sliding groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By using a cylinder as the power source, the force of each stamping can be kept consistent.

[0018] At the same time, a feeding device is used to feed the material, preventing workers' hands from being below the tableting device, thereby preventing hand injuries during operation;

[0019] Meanwhile, the feeding device uses a stepper motor and a ball screw for transmission, which ensures smooth transmission of the lower die and prevents the powder inside the lower die from splashing out. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a tablet press for making polypropylene powder tablets.

[0021] Figure 2 This is a front view of a tablet press for making polypropylene powder tablets.

[0022] Figure 3 This is a side view of a tablet press for making polypropylene powder tablets.

[0023] Figure 4 This is a top view of a tablet press for making polypropylene powder tablets.

[0024] Figure 5 This is a schematic diagram of the feeding device in a tablet press for making polypropylene powder tablets from another angle. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] Please see Figure 1-4A tablet press for making polypropylene powder tablets includes a frame 1; a worktable 101 is fixedly installed on the top of the frame 1, a feeding device 2 is fixedly installed at the center of the top of the worktable 101, and a tablet pressing device 4 is provided behind the top of the worktable 101.

[0027] The feeding device 2 includes a front feeding mounting base 201, a rear feeding mounting base 202 and a lower die mounting base 204, and also includes a ball screw mechanism 210 and a feeding power device 220.

[0028] The lower mold 3 is fixedly installed on the top of the lower mold mounting base 204, and the lower mold 3 has a lower mold cavity 301 for placing powder on the top.

[0029] The infeed mounting base 201 and the rear feed mounting base 202 are fixedly mounted on the top of the workbench 101; two first guide shafts 203 are fixedly mounted between the infeed mounting base 201 and the rear feed mounting base 202, and the first guide shafts 203 are arranged along the front-back direction; two sliding seats 205 are fixedly mounted below the lower mold mounting base 204, and the left and right sides of the sliding seats 205 are slidably connected to the first guide shafts 203 through first linear bearings 206;

[0030] The ball screw mechanism 210 includes a screw 211 and a screw nut 212. The front and rear ends of the screw 211 are rotatably connected to the feed mounting seat 201 and the rear feed mounting seat 202 respectively through bearings. The screw nut 212 is fixedly installed in the middle of the sliding seat 205 on the rear side of the lower die mounting seat 204.

[0031] When the lead screw 211 rotates, the lead screw nut 212 installed on the lead screw 211 will drive the lower die mounting base 204 to move back and forth along the first guide shaft 203, thereby driving the lower die mounting base 204 to move back and forth along the first guide shaft 203.

[0032] The feeding power unit 220 includes a feeding motor 221 and a synchronous belt drive mechanism 222. The feeding motor 221 is fixedly mounted on the front end of the motor mounting plate 223, which is fixedly mounted on the rear side of the rear feeding mounting base 202. The feeding motor 221 is connected to the lead screw 211 of the ball screw mechanism 210 through the synchronous belt drive mechanism 222, thereby driving it to rotate. The feeding motor 221 is a stepper motor, providing precise and stable transmission.

[0033] Specifically, the synchronous belt drive mechanism 222 includes a synchronous belt 224, a driving synchronous pulley 225, and a driven synchronous pulley 226.

[0034] The output shaft of the feed motor 221 is fixed with a drive synchronous pulley 225. The rear end of the lead screw 211 passes through the feed mounting base 202 and is fixedly mounted with a driven synchronous pulley 226. The drive synchronous pulley 225 is driven to rotate by the driven synchronous pulley 226 through the synchronous belt 224.

[0035] The tableting device 4 includes an upper mounting plate 401. The four bottom corners of the upper mounting plate 401 are fixedly mounted on the top of the workbench 101 by columns 402. The upper mounting plate 401 is located above the feeding device 2. The top center of the upper mounting plate 401 is vertically fixedly mounted on the tableting cylinder 402. The output shaft of the tableting cylinder 402 passes vertically through the upper mounting plate 401 and is fixedly connected to the top center of the upper mold mounting base 403.

[0036] Meanwhile, in order to standardize the lifting path of the upper mold mounting base 403, a second guide shaft 404 is also vertically and fixedly installed on the top of the upper mold mounting base 403. The second guide shaft 404 passes through the upper mounting plate 401 and is slidably connected to the upper mounting plate 401 through the second linear bearing 405.

[0037] An upper mold 5 is fixedly installed at the bottom center of the upper mold mounting base 403. The bottom of the upper mold 5 is matched with the lower mold cavity 301. In use, the upper mold 5 descends into the lower mold cavity 301, thereby pressing the powder in the mold cavity 301 into a sheet.

[0038] When using this utility model, the operator puts the powder to be tableted into the lower mold cavity 301 of the lower mold, and then the feeding power device 220 of the feeding device 2 is activated, which drives the lower mold 3 to move backward to directly below the upper mold 5 through the ball screw mechanism 210; the tableting cylinder 402 of the tableting device 4 is activated, which drives the upper mold 5 to move downward to press the powder into tablets.

[0039] Then the feeding power unit 220 of the feeding device 2 drives the lower die 3 to move forward, at which time the operator takes out the sheet from the lower die 3.

[0040] Meanwhile, in this scheme, in order to prevent excessive pressure on the first guide shaft 203 by the tableting device 4 during tableting, the feeding device 2 also includes a pressure plate 230. There are two pressure plates 230, and the two pressure plates 230 are respectively located on the outside of the two first guide shafts 203. The outer side of the sliding seat 205 is provided with a sliding groove 231. The sliding seat 205 is slidably connected to the pressure plate 230 through the sliding groove 231. When the lower die 3 of the tableting device 4 falls, the pressure received by the lower die 3 is shared by the first guide shaft 203 and the pressure plate 230, reducing the impact on the first guide shaft 203 and preventing its deformation.

[0041] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A tablet press for producing polypropylene powder tablets, comprising a frame; a worktable is fixedly mounted on the top of the frame, characterized in that, A feeding device is fixedly installed at the top center of the workbench, and a tableting device is arranged at the rear of the top of the workbench. The feeding device includes a front feeding mounting seat, a rear feeding mounting seat, and a lower die mounting seat, as well as a ball screw mechanism and a feeding power device. The feeding power device is driven and connected to the lower die mounting seat through the ball screw mechanism. A lower pressing die is fixedly installed on the top of the lower die mounting seat, and the top of the lower pressing die has a lower die cavity for placing powder. The tableting device includes an upper mounting plate, which is located above the feeding device. The top center of the upper mounting plate is vertically fixedly installed downwards on a tableting cylinder. The output shaft of the tableting cylinder vertically passes through the upper mounting plate and is fixedly connected to the top center of the upper die mounting seat. An upper pressing die is fixedly installed at the bottom center of the upper die mounting seat, and the bottom of the upper pressing die is fitted with the lower die cavity.

2. The tablet press for polypropylene powder tableting according to claim 1, characterized in that, The infeed mounting base and the rear feed mounting base are fixedly installed on the top of the workbench; two first guide shafts are fixedly installed between the infeed mounting base and the rear feed mounting base, and the first guide shafts are arranged along the front-back direction; two sliding seats are fixedly installed below the lower mold mounting base, and the left and right sides of the sliding seats are slidably connected to the first guide shafts through first linear bearings.

3. A tablet press for making polypropylene powder tablets according to claim 2, characterized in that, The ball screw mechanism includes a screw and a screw nut. The front and rear ends of the screw are rotatably connected to the feed mounting seat and the rear feed mounting seat respectively through bearings. The screw nut is fixedly installed in the middle of the sliding seat on the rear side of the lower die mounting seat.

4. A tablet press for making polypropylene powder tablets according to claim 3, characterized in that, The feeding power unit includes a feeding motor and a synchronous belt transmission mechanism. The feeding motor is fixedly installed at the front end of the motor mounting plate, while the motor mounting plate is fixedly installed at the rear side of the rear feeding mounting seat. The feeding motor drives the lead screw of the ball screw mechanism through the synchronous belt transmission mechanism to rotate.

5. A tablet press for making polypropylene powder tablets according to claim 4, characterized in that, The synchronous belt drive mechanism includes a synchronous belt, a driving synchronous pulley, and a driven synchronous pulley. The driving synchronous pulley is fixed on the output shaft of the feeding motor. The rear end of the lead screw passes through the feeding mounting base and is fixedly mounted on the driven synchronous pulley. The driving synchronous pulley is driven by the synchronous belt to rotate.

6. A tablet press for making polypropylene powder tablets according to claim 1, characterized in that, The upper mounting plate is fixedly installed on the top of the workbench at the four bottom corners by columns.

7. A tablet press for making polypropylene powder tablets according to claim 1, characterized in that, A second guide shaft is also fixedly mounted vertically upward on the top of the upper mold mounting base. The second guide shaft passes through the upper mounting plate and is slidably connected to the upper mounting plate through a second linear bearing.

8. A tablet press for making polypropylene powder tablets according to claim 2, characterized in that, The feeding device also includes a pressure plate, which consists of two plates located on the outer sides of the two first guide shafts. A sliding groove is provided on the outer side of the sliding seat, and the sliding seat is slidably connected to the pressure plate through the sliding groove.

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