CN220638683U

CN220638683U - PVC sheet calender

Info

Publication number: CN220638683U
Application number: CN202322371571.3U
Authority: CN
Inventors: 王风友
Original assignee: WEIFANG JINGDA PLASTIC MACHINERY CO LTD
Current assignee: WEIFANG JINGDA PLASTIC MACHINERY CO LTD
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-03-22
Anticipated expiration: 2033-09-01

Abstract

The utility model discloses a PVC sheet calender, which belongs to the field of PVC sheet production equipment, and comprises a chassis and a support frame, wherein a fixed roller seat is arranged on the support frame, a fixed press roller is rotatably connected to the fixed roller seat, movable roller seats which slide vertically are respectively arranged on the upper side and the lower side of the fixed roller seat, movable press rollers are respectively rotatably connected to the fixed roller seat, the distance between the two movable press rollers and the fixed press rollers can be simultaneously adjusted through a distance adjusting screw rod with bidirectional threads, the fixed press rollers are used for controlling the thickness of PVC sheets, the fixed press rollers are driven by a driving motor, a distance changing transmission structure is respectively arranged between the two movable press rollers and the fixed press rollers, a driving mechanism is not required to be independently configured for the two movable press rollers, and the support frame is movably arranged on the chassis, so that operators can conveniently enter between the calender and an extruder head to operate.

Description

PVC sheet calender

Technical Field

The utility model relates to the field of PVC sheet production equipment, in particular to a PVC sheet calender.

Background

The PVC sheet calender is equipment which is formed by arranging two or more compression rollers according to a certain form and pressing and expanding PVC raw materials extruded from an extruder head into sheets with a certain thickness at a certain temperature, and the existing calender has the following problems in actual production:

1. each press roller adopts an independent driving motor to drive and work, and a plurality of driving motors are arranged according to the number of the press rollers, so that the manufacturing cost is high, and different press rollers are easy to generate rotation speed difference, so that the surface of the PVC sheet is wrinkled.

2. The extrusion position of the calender needs to be close to the extruder head for the distance between the calender and the extruder head is smaller, and when the extruder head needs to be maintained or roll changing operation is carried out on the calender, operators are difficult to enter between the calender and the extruder head, so that inconvenience is caused.

Disclosure of Invention

Aiming at the technical problems, the utility model provides the PVC sheet calender which saves a driving motor and is convenient to operate.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the PVC sheet calender comprises a support frame, wherein a fixed roller seat is arranged on the support frame, a fixed compression roller is rotationally connected to the fixed roller seat, and a driving motor in transmission connection with the fixed compression roller is arranged on the fixed roller seat;

the upper side and the lower side of the fixed roller seat are respectively provided with a movable roller seat, the movable roller seat is vertically and slidably connected to the supporting frame, the movable roller seat is rotationally connected with a movable press roller, and a variable-pitch transmission structure is respectively arranged between the two movable press rollers and the fixed press roller;

the support frame is connected with a distance adjusting screw rod in a vertical rotating mode, the distance adjusting screw rod is connected with two movable roller seats in a threaded mode, and the screw direction of a threaded portion of the distance adjusting screw rod matched with the two movable roller seats is opposite to that of the screw portion of the distance adjusting screw rod.

As an optimized technical scheme, the variable-pitch transmission structure comprises a first press roller gear, a first transmission gear, a second press roller gear, a swing arm and a connecting arm which are sequentially meshed, wherein the first press roller gear is fixedly connected to a roll shaft of the fixed press roller, and the second press roller gear is fixedly connected to a roll shaft of the movable press roller;

the swing arm is respectively connected with the roll shaft of the fixed compression roller and the rotating shaft of the first transmission gear in a rotating way, the connecting arm is respectively connected with the roll shaft of the movable compression roller and the rotating shaft of the first transmission gear in a rotating way, and the second transmission gear is connected to the connecting arm in a rotating way.

As the preferable technical scheme, the number of the pitch-adjusting screw rods is two, two worm wheels are fixedly connected to the pitch-adjusting screw rods respectively, a synchronous shaft is connected to the support frame in a rotating mode along the horizontal direction, two ends of the synchronous shaft are fixedly connected with worm screws respectively, and the two worm screws are meshed with the two worm wheels correspondingly.

As an optimal technical scheme, the support frame is provided with a distance adjusting motor, and the distance adjusting motor is in transmission connection with the synchronous shaft.

As the preferable technical scheme, the novel lifting device further comprises a bottom frame, and the supporting frame is arranged on the bottom frame in a sliding mode.

As the preferable technical scheme, the bottom of the support frame is provided with casters, the underframe is provided with a sliding rail, and the casters are in rolling fit with the sliding rail.

As the preferable technical scheme, the one end of chassis is fixed and is equipped with the stake of pulling, the fixed action motor that is equipped with on the support frame, the transmission is connected with on the power take off shaft of action motor and pulls the lead screw, pull the lead screw with pull stake threaded connection.

As the preferable technical scheme, a universal joint is connected between the power output shaft of the action motor and the traction screw rod, a rotating block is rotationally connected on the traction pile, and the traction screw rod is in threaded connection with the rotating block.

Compared with the prior art, the utility model has the following advantages:

1. the synchronous shaft is driven to rotate through the distance adjusting motor, and then the two distance adjusting screw rods are driven to rotate simultaneously, the movable press rollers above and below are driven to move reversely by utilizing the threads on the distance adjusting screw rods in opposite directions, the distance between the two movable press rollers and the fixed press rollers is convenient to adjust simultaneously, and the thickness of the produced PVC sheet is convenient to control.

2. A driving motor is configured for the fixed press roller, a variable-pitch transmission structure is respectively arranged between the fixed press roller and the two movable press rollers, and the variable-pitch transmission structure can always keep a transmission function when the distance is changed, so that the fixed press rollers can drive the two movable press rollers to rotate simultaneously when rotating, the number of the driving motors is reduced, the manufacturing cost is reduced, the rotating speed of the two movable press rollers is ensured to be equal to that of the fixed press rollers, and the product quality is ensured.

3. The lower part of the supporting frame is provided with the underframe, the truckles at the bottom of the supporting piece are arranged on the sliding rail on the underframe in a rolling way, the traction screw rod is driven to rotate by the action motor, the supporting frame can be conveniently moved, an operator can conveniently enter between the calender and the extruder head to operate, a universal joint is arranged between the power output shaft of the action motor and the traction screw rod, and a rotating block is arranged on the traction pile in a rotating way, so that the mechanical deviation between the supporting frame and the underframe can be well adapted.

Drawings

FIG. 1 is a schematic view of a PVC sheet calender according to the present utility model;

FIG. 2 is a schematic diagram of the transmission structure among the middle press roller, the lower press roller, the upper press roller and the upper press roller;

FIG. 3 is a schematic view of the rest of the structure of the present utility model;

FIG. 4 is a schematic view of a PVC sheet calender according to another view angle.

In the drawing the view of the figure,

10-underframe; 11-a slide rail; 12-traction piles; 121-rotating the block; 20-supporting frames; 21-fixing a roller seat; 211-fixing a press roller; 212-driving a motor; 22-a movable roller seat; 221-a movable press roll; 231-a first roller gear; 232—a first transmission gear; 233-a second transmission gear; 234-a second roller gear; 235-swing arms; 236-a connecting arm; 24-a distance adjusting screw rod; 241-worm wheel; 25-synchronizing shaft; 251-worm; 26-a distance-adjusting motor; 27-a mobile motor; 271-universal joints; 272-pulling a screw rod; 28-casters.

Detailed Description

The following detailed description of the utility model will be made with reference to the accompanying drawings.

As shown in fig. 1-4, a PVC sheet calender comprises a vertical support frame 20, a fixed roller seat 21 fixedly connected to the support frame 20, a fixed roller 211 rotatably connected to the fixed roller seat 21, a driving motor 212 provided on the fixed roller seat 21, the driving motor 212 in transmission connection with the fixed roller 211 for driving the fixed roller 211 to rotate, a movable roller seat 22 provided above and below the fixed roller seat 21 respectively, the movable roller seat 22 in sliding connection with the support frame 20 vertically, a movable roller 221 provided above and below the fixed roller seat 211 respectively, wherein the movable roller 221 above is rotatably connected to the movable roller seat 22 above, the movable roller 221 below is rotatably connected to the movable roller seat 22 below, and the axial directions of the fixed roller 211 and the two movable rollers 221 are both horizontally arranged.

The support frame 20 is rotatably connected with two vertical distance adjusting screw rods 24, two screw threads with opposite screw directions are respectively arranged on the two distance adjusting screw rods 24, one screw thread section is in screw thread connection with the upper movable roller seat 22, the other screw thread section is in screw thread connection with the lower movable roller seat 22, the upper movable roller seat 22 and the lower movable roller seat 22 can be synchronously driven to reversely slide through the rotating distance adjusting screw rods 24, so that the distance between the two movable press rollers 221 and the fixed press rollers 211 can be synchronously adjusted, furthermore, a synchronous shaft 25 is arranged between the two distance adjusting screw rods 24, the synchronous shaft 25 is horizontally arranged and rotatably connected on the support frame 20, two ends of the synchronous shaft 25 are respectively fixedly connected with a worm 251, worm wheels 241 are respectively fixedly connected on the two distance adjusting screw rods 24, the two worm wheels 251 are meshed with the two worm wheels 241 in one-to-one correspondence, the support frame 20 is provided with a distance adjusting motor 26 in transmission connection with the synchronous shaft 25, and the synchronous shaft 25 is driven to rotate through the distance adjusting motor 26, and the two distance adjusting screw rods 24 can be driven to synchronously rotate, so that the two height deviations of the two ends of the movable press rollers 221 are prevented.

The variable-pitch transmission structure comprises a first press roller gear 231, a first transmission gear 232, a second transmission gear 233, a second press roller gear 234, a swing arm 235 and a connecting arm 236, wherein the first press roller gear 231, the first transmission gear 232, the second transmission gear 233 and the second press roller gear 234 are sequentially in transmission engagement, the first press roller gear 231 is fixedly connected to the fixed press roller 211, the second press roller gear is fixedly connected to the movable press roller 221, the swing arm 235 is rotationally connected to a roller shaft of the fixed press roller 211, a rotating shaft of the first transmission gear 232 is rotationally connected to an end part of the swing arm 235, one end of the connecting arm 236 is rotationally connected to a roller shaft of the movable press roller 221, the other end of the connecting arm 236 is rotationally connected to the rotating shaft of the first transmission gear 232, and the second transmission gear 233 is rotationally connected to the connecting arm 235, so that the axial distance between the first press roller gear 231 and the first transmission gear 232 is kept unchanged, and the second transmission gear 232 is kept under the limitation of the connecting arm 236, and the axial distance between the first transmission gear 232 and the second transmission gear 233 and the second transmission gear 234 is kept unchanged, and the axial distance between the first transmission gear 233 and the second transmission gear 234 is kept unchanged.

When the distance between the two movable press rollers 221 and the fixed press roller 211 is adjusted, the distance-changing transmission structure can always keep the transmission function, so that the fixed press roller 211 can drive the two movable press rollers 221 to rotate simultaneously when rotating, and the rotating direction of the movable press rollers 221 is opposite to the rotating direction of the fixed press roller 211.

When the calender presses PVC sheets, the extruder head corresponds to a gap between the fixed press roller 211 and the movable press roller 221 below, PVC raw materials extruded from the extruder head are firstly extruded between the fixed press roller 211 and the movable press roller 221 below to be preliminarily formed, then the preliminarily formed PVC sheets pass through the gap between the fixed press roller 211 and the movable press roller 221 above to be secondarily extruded, the distance between the two movable press rollers 221 and the fixed press roller 211 is regulated, and the thickness of the produced PVC sheets can be controlled.

As a preferred embodiment, a PVC sheet calender further includes a chassis 10, two parallel sliding rails 11 are disposed on the chassis 10, casters 28 are disposed on two sides of the bottom of the supporting frame 20 respectively, the casters 28 are disposed on the sliding rails 11 on one side corresponding to the casters, so that the supporting frame 20 can reciprocate along the direction of the sliding rails 11, a moving motor 27 is fixedly disposed on the supporting frame 20, a traction screw 272 is connected to a power output shaft of the moving motor 27 through a universal joint 271 in a transmission manner, a traction pile 12 is fixedly connected to one end of the chassis 10, a rotating block 121 is rotatably connected to the traction pile 12, and the traction screw 272 is screwed to the rotating block 121.

When the maintenance operation is required to be carried out on the machine head of the extruder, or the roll changing operation is carried out on the calender, the action motor 27 can be started to drive the traction screw rod 272 to rotate, the support frame 20 is pulled to one end, far away from the machine head of the extruder, of the underframe 10, so that an operator can conveniently enter between the calender and the machine head of the extruder, when the operation is carried out, the action motor 27 can be controlled to rotate reversely to drive the traction screw rod 272 to rotate reversely, the support frame 20 is pushed to one end, close to the machine head of the extruder, of the underframe 10, mechanical abrasion and possibly foreign matters can be possibly caused between the trundle 28 and the slide rail 11 which are in rolling fit, and therefore, the support frame 20 is difficult to move along a precise linear path, a certain inclination angle can be allowed to appear on the traction screw rod 272 by the universal joint 271 between the power output shaft of the action motor 27 and the traction screw rod 272, and the rotating block 121 on the traction pile 12 can rotate cooperatively, the traction screw rod 272 can be prevented from being damaged due to shearing force, and the good adaptability is achieved.

While there has been shown and described what are at present considered to be fundamental principles, main features and advantages of the present utility model, it will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, but is described in the foregoing description merely illustrates the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A PVC sheet calender comprising a support frame (20), characterized in that: a fixed roller seat (21) is arranged on the support frame (20), a fixed press roller (211) is rotationally connected to the fixed roller seat (21), and a driving motor (212) in transmission connection with the fixed press roller (211) is arranged on the fixed roller seat (21);

the upper side and the lower side of the fixed roller seat (21) are respectively provided with a movable roller seat (22), the movable roller seat (22) is vertically connected to the support frame (20) in a sliding manner, the movable roller seat (22) is rotationally connected with a movable press roller (221), and a variable-pitch transmission structure is respectively arranged between the movable press roller (221) and the fixed press roller (211);

the support frame (20) is vertically and rotationally connected with a distance adjusting screw rod (24), the distance adjusting screw rod (24) is respectively in threaded connection with the two movable roller seats (22), and the screw direction of the threaded parts matched with the two movable roller seats (22) on the distance adjusting screw rod (24) is opposite.

2. A PVC sheet calender according to claim 1, wherein: the variable-pitch transmission structure comprises a first press roller gear (231), a first transmission gear (232), a second transmission gear (233), a second press roller gear (234), a swing arm (235) and a connecting arm (236) which are sequentially meshed, wherein the first press roller gear (231) is fixedly connected to a roll shaft of the fixed press roller (211), and the second press roller gear (234) is fixedly connected to a roll shaft of the movable press roller (221);

swing arm (235) respectively with the roller of fixed compression roller (211) and the pivot rotation of first drive gear (232) are connected, linking arm (236) respectively with the roller of movable compression roller (221) and the pivot rotation of first drive gear (232) are connected, second drive gear (233) rotate and are connected linking arm (236).

3. A PVC sheet calender according to claim 1, wherein: the number of the pitch adjusting screw rods (24) is two, worm wheels (241) are fixedly connected to the two pitch adjusting screw rods (24) respectively, a synchronizing shaft (25) is connected to the support frame (20) in a rotating mode along the horizontal direction, two ends of the synchronizing shaft (25) are fixedly connected with worms (251) respectively, and the two worms (251) are correspondingly meshed with the two worm wheels (241).

4. A PVC sheet calender according to claim 3, wherein: the support frame (20) is provided with a distance adjusting motor (26), and the distance adjusting motor (26) is in transmission connection with the synchronous shaft (25).

5. A PVC sheet calender according to any of claims 1-4, wherein: the novel multifunctional electric bicycle further comprises a bottom frame (10), and the supporting frame (20) is arranged on the bottom frame (10) in a sliding mode.

6. A PVC sheet calender according to claim 5, wherein: the bottom of support frame (20) is equipped with truckle (28), be equipped with slide rail (11) on chassis (10), truckle (28) with slide rail (11) rolling fit.

7. The PVC sheet calender of claim 6, wherein: one end of the underframe (10) is fixedly provided with a traction pile (12), the support frame (20) is fixedly provided with a movement motor (27), a power output shaft of the movement motor (27) is in transmission connection with a traction screw rod (272), and the traction screw rod (272) is in threaded connection with the traction pile (12).

8. The PVC sheet calender of claim 7, wherein: the universal joint (271) is connected between the power output shaft of the action motor (27) and the traction screw rod (272), the traction pile (12) is rotationally connected with a rotating block (121), and the traction screw rod (272) is in threaded connection with the rotating block (121).