CN218256301U - A pre-compaction device for PTFE - Google Patents

Abstract

The utility model discloses a pre-compaction device for PTFE, including the base, install the support on the base and locate the support below and the vertical pressure feed cylinder that extends, be equipped with on the support be located press feed cylinder top and with press the depression bar of the coaxial setting of feed cylinder, the lower extreme of depression bar is equipped with the inner wall matched with clamp plate with pressing the feed cylinder, still is equipped with the motor on the support, is equipped with drive mechanism between the output shaft of motor and the depression bar, drive mechanism can drive the depression bar oscilaltion when the motor during operation. The utility model relates to a pre-compaction device for PTFE convenient to use, security are high, and polytetrafluoroethylene powder's pre-compaction effect is better.

Description

A pre-compaction device for PTFE

Technical Field

The utility model belongs to the technical field of PTFE production facility, concretely relates to a pre-compaction device for PTFE.

Background

PTFE is also called polytetrafluoroethylene wax powder, which has high molecular weight substance, not only retains the excellent performance of the original PTFE, but also has the advantages of high crystallinity, good dispersibility, easy uniform mixing with other materials, and the like. The lubricity, wear resistance, scratch resistance, non-tackiness, incombustibility, and the like of the base material can be significantly improved. The product can be widely used in the fields of synthetic materials, modified engineering plastics, fluoroplastics, industrial belts, non-stick pan coatings, rubber, coatings, printing ink and the like.

In the preparation process of polytetrafluoroethylene products, polytetrafluoroethylene powder is generally subjected to the working procedures of material mixing, prepressing, extruding, rolling, oil pumping, longitudinal drawing and the like. And prepressing and molding the polytetrafluoroethylene powder by using a prepress in the prepressing process. The existing prepressing machine generally applies pressure to polytetrafluoroethylene powder by adopting a hydraulic system, but the volume of hydraulic oil in the hydraulic system can change along with the change of climate and temperature, so that the prepressing volume of the polytetrafluoroethylene powder has errors, and the quality of a finally prepared product is not ideal.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a pre-compaction device for PTFE, it is unstable, the problem of existence error to anticipate to solve current preformer pre-compaction effect.

The utility model discloses the technical problem that will solve can realize through following technical scheme:

the utility model provides a pre-compaction device for PTFE, includes the base, installs the support on the base and locates the pressure feed cylinder of support below and vertical extension, be equipped with on the support be located press feed cylinder top and with press the depression bar of the coaxial setting of feed cylinder, the lower extreme of depression bar is equipped with the inner wall matched with clamp plate with pressing the feed cylinder, still be equipped with the motor on the support, be equipped with drive mechanism between the output shaft of motor and the depression bar, drive mechanism can drive the depression bar oscilaltion when the motor during operation.

Adopt this technical scheme, when needs pre-compaction polytetrafluoroethylene powder, put polytetrafluoroethylene powder in pressing the feed cylinder earlier, then the starter motor, the turning force of motor transmits for the depression bar through drive mechanism to the drive clamp plate moves down, carries out the pre-compaction to the polytetrafluoroethylene powder in pressing the feed cylinder.

Further, the support comprises a connecting frame fixedly connected with the base and a supporting frame arranged at the upper end of the connecting frame, a top plate is arranged above the supporting frame, a supporting rod is arranged between the supporting frame and the top plate, and the transmission mechanism is arranged between the supporting frame and the top plate.

Such structural design, the support consumptive material is few, the cost is low, and the load of support lower part is littleer.

Furthermore, a support plate capable of sliding up and down is sleeved on the connecting frame, a support hole matched with the material pressing barrel is formed in the support plate, and the support hole and the pressing rod are coaxially arranged. Wherein, the backup pad is a plurality of and sets gradually along the upper and lower direction of link, supports the pressure feed cylinder through a plurality of backup pads, can improve the stability of pressure feed cylinder. The backup pad can follow link up-and-down motion under the exogenic action, and when the backup pad motion target in place the back, can stop at the current position of link.

The transmission mechanism comprises a transverse plate located below the top plate, the two ends of the transverse plate are in threaded connection with vertically extending screw rods, the lower ends of the screw rods are rotatably connected with the supporting frame, the upper ends of the screw rods are rotatably connected with the top plate, the motor can drive the two screw rods to synchronously rotate in the same direction, and the upper ends of the pressing rods are fixed on the transverse plate. When the two screw rods synchronously rotate in the same direction, the transverse plate can be driven to lift up and down, and the pressing rod can be driven to lift up and down when the transverse plate lifts up and down.

The motor is two and all installs on the roof, two the output shaft of motor is connected with different lead screw transmissions. The output shaft of the motor can be directly connected with the screw rod through the coupler, or the output shaft of the motor is connected with the speed reducer, and the output shaft of the speed reducer is connected with the screw rod.

The middle part of carriage has the hole of stepping down, the depression bar is worn to establish and is stepped down downtheholely.

Furthermore, the pressing plate is detachably connected with the pressing rod. Due to the structural design, the pressing plate can be replaced, and the phenomenon that the pressing plate is worn and caused due to overlong service time is avoided.

The utility model has the advantages that:

the utility model provides a pre-compaction device for PTFE, which is provided with a base, a bracket, a material pressing barrel, a motor, a pressure rod, a pressure plate and a transmission mechanism, wherein the device transmits the rotating force of the motor to the pressure rod through the transmission mechanism, thereby controlling the pressure plate to pre-compact the polytetrafluoroethylene powder in the material pressing barrel, and having convenient operation and simple structure; this device adds the extrusion mode of lead screw through servo motor, is difficult for receiving external environment influence, defect when adopting the oil pressure can not appear, and the pressure that the product received is more accurate, and finished product quality is better.

Drawings

FIG. 1 is a front view of a pre-pressing device for PTFE of the present invention;

FIG. 2 is a front cross-sectional view of a second support of the pre-pressing device for PTFE of the present invention;

FIG. 3 is a top view of a support frame of a pre-pressing device for PTFE according to the present invention;

FIG. 4 is a top view of a cross plate of a pre-pressing device for PTFE of the present invention;

FIG. 5 isbase:Sub>A right side view of section A-A of FIG. 4;

the reference numerals in the figures are as follows: the device comprises a base 1, a support 2, a material pressing barrel 3, a connecting frame 4, a motor 5, a pressing rod 6, a pressing plate 7, a transverse plate 8, a screw rod 9, a supporting frame 10, a top plate 11 and a supporting rod 12; a support plate 13 and a relief hole 14.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figure 1, figure 2, figure 3, figure 4 and figure 5, a pre-compaction device for PTFE, including base 1, install support 2 on base 1, and locate support 2 below and the vertical pressure feed cylinder 3 that extends, be equipped with on support 2 and be located pressure feed cylinder 3 top and with the pressure feed cylinder 3 coaxial setting's depression bar 6, the lower extreme threaded connection of depression bar 6 has the clamp plate 7 with the inner wall matched with of pressure feed cylinder 3, seted up fine bleeder vent on the clamp plate 7, can see through the air, but can not see through out polytetrafluoroethylene wax powder. The support 2 is also provided with a motor 5, a transmission mechanism is arranged between an output shaft of the motor 5 and the pressing rod 6, and the transmission mechanism can drive the pressing rod 6 to lift up and down when the motor 5 works.

Support 2 includes link 4 with base 1 fixed connection to and install the carriage 10 in link 4 upper end, the top of carriage 10 is provided with roof 11, the logical groove that corresponds with a pressure feed cylinder 3 is seted up at carriage 10 middle part, roof 11 is connected fixedly through bracing piece 12 and carriage 11, the quantity of this embodiment bracing piece 12 is four, four bracing pieces 12 set up respectively in the end angle department of carriage 10, the quantity of motor 5 is two, two motors 5 are all installed on roof 11.

The connecting frame 4 is sleeved with 3 supporting plates 13 capable of sliding up and down, supporting holes matched with the material pressing barrel 3 are formed in the supporting plates 13, and the supporting holes and the pressing rod 6 are arranged coaxially. The material pressing cylinder 3 can be supported by the supporting plate 13, and the supporting position of the material pressing cylinder 3 by the supporting plate 13 can be adjusted.

The middle part of the support frame 10 is provided with a yielding hole 14, and the pressure lever 6 is arranged in the yielding hole in a penetrating way.

The transmission mechanism comprises a transverse plate 8, the transverse plate 8 is arranged between a top plate 11 and a supporting frame 10, two ends of the transverse plate 8 are in threaded connection with vertically extending screw rods 9, the upper ends of the two screw rods 9 are fixedly connected with output shafts of two motors 5 respectively, the lower ends of the two screw rods 9 are rotatably connected with the supporting frame 10, and the pressing rod 6 is installed on the lower side of the transverse plate 8.

The pressure sensor is installed at the bottom of the inner cavity of the material pressing barrel 3, the pressure sensor can monitor the force applied by the pressing plate 7 to the material in the material pressing barrel 3 in real time, and the pressure sensor is a standard industrial control pressure sensor with the model PT124G-120. The controller is still installed to this device, and the controller of this embodiment is the singlechip, model STM32F446ZET6. An electric ruler is arranged on the support 2 and can monitor the positions of the pressure rod 6 and the pressure plate 7 in real time. The signal output ends of the pressure sensor and the electric ruler are connected with the signal input end of the controller, and the controller is electrically connected with the motor.

When needs use this device pre-compaction polytetrafluoroethylene powder, put into pressure feed cylinder 3 with polytetrafluoroethylene powder earlier, after a period of stewing, open the controller, carry out the pre-compaction, the pre-compaction divide into pressure mode and position mode. The pressure mode is that a best pre-compaction pressure value is set for, after the settlement is finished, motor 5 is started, motor 5 drives lead screw 9 and rotates, because two lead screws 9 all with diaphragm 8 threaded connection, so diaphragm 8 can only carry out longitudinal movement along lead screw 9, thereby turn into motor 5 pivoted power and drive the power of diaphragm 8 longitudinal movement, diaphragm 8 moves down and drives depression bar 6 and clamp plate 7 and move down, clamp plate 7 passes in the lead-to groove of carriage 10 stretches into pressure feed cylinder 3, carry out the pre-compaction to the polytetrafluoroethylene powder in the pressure feed cylinder 3, pressure sensor monitors the power that the clamp plate 7 applyed the material in the pressure feed cylinder 3 in real time, until the numerical value that pressure sensor detected reaches the pressure value of settlement.

The position mode is with the final position of pressure mode holding down plate 7 as the mark point position, then add the powder with the same weight of pressure mode, the oil mass, later starter motor 5, 7 pre-compaction polytetrafluoroethylene powders of drive clamp plate, clamp plate 7 removal process is with last, clamp plate 7 removes the in-process, the real-time supervision clamp plate 7 position of electric chi, when clamp plate 7 removes the mark point position, the electric chi gives the controller to the signal of telecommunication that can send a "stop", thereby make motor 5 stall, the pressure that two kinds of mode products received is unanimous.

In the prepressing process, the volume of the polytetrafluoroethylene powder is reduced, compressed gas is automatically discharged through the air holes, and the prepressing effect is better and more accurate. Simultaneously, during 7 pre-compaction polytetrafluoroethylene powder of clamp plate, pressure sensor can 7 pressures of real-time supervision clamp plate to transmit pressure signal for the controller, when pressure numerical value was greater than the pressure warning line of settlement, pressure sensor can send the signal of telecommunication of "stopping" and give the controller, thereby makes motor 5 stall, and the security is higher. After the prepressing is finished, the starting motor 5 is rotated reversely, so that the pressing rod 6 and the pressing plate 7 are driven to move upwards, and then the prepressed polytetrafluoroethylene is taken out for subsequent processes.

Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will understand that the technical solutions of the present invention can be modified or replaced with other equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention. The technology, shape and construction parts which are not described in detail in the present invention are all known technology.

Claims (7)

1. A pre-compaction device for PTFE which characterized in that: including base (1), install support (2) on base (1) and locate support (2) below and vertical extension press feed cylinder (3), be equipped with on support (2) and be located press feed cylinder (3) top and with press depression bar (6) of the coaxial setting of feed cylinder (3), the lower extreme of depression bar (6) is equipped with and presses inner wall matched with clamp plate (7) of feed cylinder (3), still be equipped with motor (5) on support (2), be equipped with drive mechanism between the output shaft of motor (5) and depression bar (6), drive mechanism can drive depression bar (6) oscilaltion when motor (5) during operation.

2. The prepressing device for PTFE according to claim 1, wherein the support (2) comprises a connecting frame (4) fixedly connected with the base (1), and a supporting frame (10) arranged at the upper end of the connecting frame (4), a top plate (11) is arranged above the supporting frame (10), a supporting rod (12) is arranged between the supporting frame (10) and the top plate (11), and the transmission mechanism is arranged between the supporting frame (10) and the top plate (11).

3. The prepressing device for PTFE according to claim 2, wherein a support plate (13) capable of sliding up and down is sleeved on the connecting frame (4), the support plate (13) is provided with a support hole matched with the pressing cylinder (3), and the support hole is coaxial with the pressing rod (6).

4. The pre-pressing device for PTFE according to claim 2, wherein the transmission mechanism comprises a transverse plate (8) located below a top plate (11), both ends of the transverse plate (8) are in threaded connection with vertically extending screw rods (9), the lower ends of the two screw rods (9) are rotatably connected with a support frame (10), the upper ends of the two screw rods (9) are rotatably connected with the top plate (11), the motor (5) can drive the two screw rods (9) to synchronously rotate in the same direction, and the upper end of the pressing rod (6) is fixed on the transverse plate (8).

5. Prepressing device for PTFE according to claim 4, wherein two motors (5) are provided and are mounted on the top plate (11), and the output shafts of the two motors (5) are in transmission connection with different screw rods (9).

6. The pre-pressing device for PTFE according to claim 2 or 4, wherein the support frame (10) has a relief hole (14) in the middle, and the pressing rod (6) is arranged in the relief hole (14) in a penetrating manner.

7. Prepressing device for PTFE according to claim 1, characterized in that: the pressing plate (7) is detachably connected with the pressing rod (6).

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