Pushing mechanism of positive and negative pressure forming machine

Abstract

The utility model discloses a material pushing mechanism of a positive and negative pressure forming machine, and relates to the technical field of positive and negative pressure forming machines, the material pushing mechanism comprises a bearing support, a limiting screw rod, a speed reduction rubber wheel, a conveying belt and a cam shaft disc, a supporting wheel frame is arranged above the right side of the bearing support, and a driving motor is installed on the right side of the supporting wheel frame; a conveying belt is clamped on the inner side of the supporting wheel frame, a material rolling wheel is installed above the left side of the bearing support, a speed reduction rubber wheel is arranged on the right side of the material rolling wheel, a first fixing edge block is arranged at the top of the speed reduction rubber wheel, a supporting connecting rod is arranged on the left side of the first fixing edge block, and a limiting rod is arranged on the right side of the first fixing edge block; according to the equipment, the two conveying belts are attached to each other, plastic roll type raw materials can be clamped and pushed, the tightly attached conveying belts can flatten and correct the plastic roll type raw materials, and the oblique tension rods can prevent plastic films from being scattered and damaged in the pulling process.

Description

Technical Field

[0001] The utility model relates to the technical field of positive and negative pressure molding machines, in particular to a material pushing mechanism of a positive and negative pressure molding machine. Background Art

[0002] The working principle of the positive and negative pressure molding machine is to use a mold with an inner and outer shell structure to apply positive and negative pressure in the mold at the same time. When the two pressures act on the plastic material in the mold, the plastic material will be stretched and contracted, thereby achieving the purpose of molding. The working principle of the negative pressure molding machine is to use the pressure in the mold to control the contraction of the plastic material, thereby achieving the purpose of molding, but the existing molding machine equipment has shortcomings, such as:

[0003] Publication No.: CN219523018U describes a feeding device for a fully automatic positive and negative pressure molding machine, which includes: a molding machine body, the lower end of which is provided with a support column; a first mounting base, which is installed on one side of the support column; a first electric cylinder, which is connected to the upper end of the first mounting base; a first mounting plate, which is arranged at the upper end of the piston rod of the first electric cylinder; a second motor, which is installed on the right side of the first mounting plate; a feeding hopper, which is connected to the right side of the rotating shaft of the second motor; and a supporting crossbeam, which are all arranged on one side of the support column. Since the equipment adopts a transmission belt conveying method, when feeding roll-shaped materials such as plastic film during use, the film will fall off the surface of the equipment and it will be difficult to move under force, which will cause the equipment to fail to operate normally. Utility Model Content

[0004] The purpose of the utility model is to provide a pushing mechanism for a positive and negative pressure molding machine to solve the problem that the equipment on the existing market adopts a conveying method of a transmission belt, and when feeding rolled materials such as plastic film during use, the film will fall off the surface of the equipment and it is difficult to move under force, thus causing the equipment to fail to operate normally.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a material pushing mechanism of a positive and negative pressure molding machine, comprising a bearing bracket, a limiting screw, a reduction rubber wheel, a conveyor belt and a camshaft disc;

[0006] A supporting wheel frame is arranged on the upper right side of the bearing bracket, a driving motor is installed on the right side of the supporting wheel frame, and a conveyor belt is clamped on the inner side of the supporting wheel frame, a material reel is installed on the upper left side of the bearing bracket, a reduction rubber wheel is arranged on the right side of the material reel wheel, a first fixed side block is arranged on the top of the reduction rubber wheel, a supporting connecting rod is arranged on the left side of the first fixed side block, and a limiting rod is arranged on the right side of the first fixed side block, a limiting screw is installed on the left side of the limiting rod, and a second fixed side block is installed on the right side of the limiting screw, a supporting plate is installed on the top left side of the bearing bracket, and a tensioning rod is installed at the midline position of the support plate.

[0007] As a preferred technical solution of the utility model, a pair of supporting wheel frames are fixedly connected to the upper right side of the bearing bracket and are symmetrically arranged, the right side of the supporting wheel frame is fixedly connected to the driving motor, and two groups of rollers parallel to each other are installed between the supporting wheel frames, and the outer rings of the rollers are covered with conveyor belts, and the conveyor belts are in contact with each other;

[0008] By adopting the above technical solution, the device can clamp and push plastic roll materials by fitting two conveyor belts together, and the tightly fitting conveyor belts can also level and correct the plastic roll materials.

[0009] As a preferred technical solution of the utility model, the top of the left side of the load-bearing bracket is fixedly connected to the support plate, and the midline positions on both sides of the support plate are rotatably connected to the tension rod, and the tension rod is obliquely placed on the load-bearing bracket;

[0010] By adopting the above technical solution, the device can prevent the plastic film from becoming scattered and damaged during the pulling process by means of the oblique tensioning rod.

[0011] As a preferred technical solution of the utility model, the lower part of the bearing bracket is fixedly connected to a support wheel frame, the two sides of the support wheel frame are supported by steel plates, and the two sides of the support wheel frame are fixedly connected to a reduction rubber wheel, and the outer ring of the reduction rubber wheel is wrapped with rubber;

[0012] By adopting the above technical solution, the device can firstly stabilize the center of gravity of the device by installing rubber-wrapped reduction rubber wheels on both sides of the supporting wheel frame, and secondly, the rubber material has a large friction force, which is convenient for transmission.

[0013] As the preferred technical solution of the utility model, the first fixed side block and the second fixed side block between the support wheel frame and the support plate are slidably connected to the outside of the load-bearing bracket, the first fixed side block and the second fixed side block are respectively fixedly connected on both sides of the left side of the support connecting rod, the first fixed side block and the second fixed side block are rotatably connected with rollers at the bottom, and the right side of the first fixed side block is rotatably connected to a limit rod, the limit rod is engaged with the left side of the second fixed side block, and the top of the limit rod is threadedly connected to a limit screw, and the diameter of the limit screw is twice that of the limit rod.

[0014] By adopting the above technical solution, the device can lock the second fixed side block by tightening the limit screw and the limit rod to prevent the overall sliding. When the bottom rollers of the first fixed side block and the second fixed side block contact the deceleration rubber wheel, the deceleration effect of the supporting wheel frame can be achieved by increasing the downward pressure, and the non-hard friction braking can greatly reduce the loss of the equipment and extend its service life.

[0015] As a preferred technical solution of the utility model, the camshaft disc above the support wheel frame is rotatably connected to the side of the bearing bracket below the tension rod, the inner side of the camshaft disc is a belt pulley disc fixedly connected to the outer side of the camshaft structure, the camshaft position on the inner side of the camshaft disc is in close contact with the tension rod, and the diameter of the camshaft disc is twice that of the belt pulley disc on the side of the support wheel frame;

[0016] By adopting the above technical solution, the equipment can repeatedly adjust the tension rod through the inner camshaft of the camshaft disc, thereby improving the adjustment and smoothing effect on the material film, and the one-to-two gear ratio increases the torque during operation, which can provide stronger power for the tension rod.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The equipment can clamp and push plastic roll materials by fitting two conveyor belts together. The tightly fitting conveyor belts can also level and correct the plastic roll materials, and the inclined tension rod can prevent the plastic film from becoming scattered and damaged during the pulling process.

[0019] 2. The device can lock the second fixed side block by tightening the limit screw and the limit rod to prevent the whole from sliding down. When the bottom rollers of the first fixed side block and the second fixed side block contact the deceleration rubber wheel, the deceleration effect of the supporting wheel frame can be achieved by increasing the downward pressure, and the non-hard friction braking can greatly reduce the loss of the equipment and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a left-side perspective structural diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model when viewed from the left side;

[0022] Figure 3 This is a left-side perspective structural diagram of the support connecting rod of the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the support connecting rod of the utility model when viewed from the bottom on the left side;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model from the rear left side;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the camshaft disc of the utility model when viewed from above.

[0026] In the figure: 1. load-bearing bracket; 2. limiting screw; 3. reduction rubber wheel; 4. conveyor belt; 5. support wheel frame; 6. drive motor; 7. tension rod; 8. material reel wheel; 9. support plate; 10. limiting rod; 11. first fixed side block; 12. supporting connecting rod; 13. second fixed side block; 14. camshaft disc. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-4 , the technical solution of the utility model: a material pushing mechanism of a positive and negative pressure molding machine, including a bearing bracket 1, a limiting screw 2, a reduction rubber wheel 3, a conveyor belt 4, a support wheel frame 5, a drive motor 6, a tension rod 7, a material reel 8, a support plate 9, a limiting rod 10, a first fixed side block 11, a supporting connecting rod 12, a second fixed side block 13 and a camshaft disc 14;

[0029] A supporting wheel frame 5 is arranged on the upper right side of the bearing bracket 1, a driving motor 6 is installed on the right side of the supporting wheel frame 5, and a conveyor belt 4 is clamped on the inner side of the supporting wheel frame 5. A pair of supporting wheel frames 5 are fixedly connected to the upper right side of the bearing bracket 1 and are symmetrically arranged. The driving motor 6 is fixedly connected to the right side of the supporting wheel frame 5, and two groups of rollers parallel to each other are installed between the supporting wheel frames 5, and the outer rings of the rollers are sleeved with conveyor belts 4, and the conveyor belts 4 fit each other. The equipment can clamp and push plastic roll materials by fitting two conveyor belts 4 together, and the tightly fitting conveyor belts 4 can also level and correct the plastic roll materials. A material roll wheel 8 is installed on the upper left side of the bearing bracket 1, a reduction rubber wheel 3 is arranged on the right side of the material roll wheel 8, and a first fixed edge block 1 is arranged on the top of the reduction rubber wheel 3. 1. The top left side of the load-bearing bracket 1 is fixedly connected to a support plate 9. The midline positions on both sides of the support plate 9 are rotatably connected to tension rods 7, and the tension rods 7 are obliquely placed on the load-bearing bracket 1. The device can prevent the plastic film from becoming scattered and damaged during the pulling process by obliquely placing the tension rods 7. A support connecting rod 12 is arranged on the left side of the first fixed edge block 11, and a limiting rod 10 is arranged on the right side of the first fixed edge block 11. A limiting screw 2 is installed on the left side of the limiting rod 10. The lower part of the load-bearing bracket 1 is fixedly connected to a support wheel frame 5. The two sides of the support wheel frame 5 are supported by steel plates, and the two sides of the support wheel frame 5 are fixedly connected to a reduction rubber wheel 3. The outer ring of the reduction rubber wheel 3 is wrapped with rubber. A second fixed edge block 13 is installed on the right side of the limiting screw 2. The top left side of the load-bearing bracket 1 is installed with a support plate 9. The support plate 9 A tension rod 7 is installed at the midline position. The device can stabilize the center of gravity of the device by installing rubber-wrapped reduction rubber wheels 3 on both sides of the support wheel frame 5. Secondly, the rubber material has a large friction force and is easy to transmit. The first fixed edge block 11 and the second fixed edge block 13 between the support wheel frame 5 and the support plate 9 are slidably connected to the outside of the load-bearing bracket 1, and the left sides of the support connecting rod 12 are respectively fixedly connected to the first fixed edge block 11 and the second fixed edge block 13. The bottom of the first fixed edge block 11 and the second fixed edge block 13 are rotatably connected with rollers, and the right side of the first fixed edge block 11 is rotatably connected to the limit rod 10, the limit rod 10 is engaged with the left side of the second fixed edge block 13, and the top of the limit rod 10 is threadedly connected to the limit screw 2, and the diameter of the limit screw 2 is twice that of the limit rod 10. The equipment can realize a locking state of the second fixed edge block 13 by tightening the limiting screw 2 and the limiting rod 10 to prevent the whole from sliding down. When the first fixed edge block 11 and the bottom rollers of the second fixed edge block 13 are in contact with the deceleration rubber wheel 3, the deceleration effect can be achieved on the support wheel frame 5 by increasing the downward pressure, and the non-hard friction braking can greatly reduce the loss of the equipment and extend its service life. The camshaft disc 14 above the support wheel frame 5 is rotatably connected to the side of the bearing bracket 1 below the tensioning rod 7. The inner side of the camshaft disc 14 is a belt pulley disc fixedly connected to the outer side of the camshaft structure. The inner camshaft position of the camshaft disc 14 is in close contact with the tensioning rod 7. The diameter of the camshaft disc 14 is twice that of the belt pulley disc on the side of the support wheel frame 5. The equipment passes through the inner camshaft of the camshaft disc 14.The tension rod 7 can be adjusted repeatedly to improve the adjustment and straightening effect on the material film, and the one-to-two gear ratio increases the torque during operation, which can provide stronger power for the tension rod 7.

[0030] Working principle: When using the pushing mechanism of this positive and negative pressure forming machine, first replace the material roll into the material roll wheel 8, then pass it through the tensioning rod 7, put it between the conveyor belt 4, then loosen the limit screw 2, press the first fixed side block 11 and the second fixed side block 13 down to the appropriate position, and then tighten the limit screw 2 and the limit rod 10. When the equipment is running, the driving motor 6 drives the conveyor belt 4 to run on the supporting wheel frame 5, and drives the material film to be pushed forward. At the rear, due to the contact between the bottom rollers of the first fixed side block 11 and the second fixed side block 13 and the reduction rubber wheel 3, a certain resistance is generated under the action of pressure, thereby straightening and outputting the material film. During the rotation of the conveyor belt 4, the pulley disc on the side of the supporting wheel frame 5 will rotate synchronously, driving the camshaft disc 14 connected by the belt to provide power for the tensioning rod 7, driving the tensioning rod 7 to swing repeatedly to adjust the material film entering the conveyor belt 4.

[0031] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A material pushing mechanism of a positive and negative pressure molding machine, comprising a bearing bracket (1), a limiting screw (2), a reduction rubber wheel (3), a conveyor belt (4) and a camshaft disc (14), characterized in that: A support wheel frame (5) is arranged on the upper right side of the bearing bracket (1), a driving motor (6) is installed on the right side of the support wheel frame (5), and a conveyor belt (4) is clamped on the inner side of the support wheel frame (5); a material reel (8) is installed on the upper left side of the bearing bracket (1), a reduction rubber wheel (3) is arranged on the right side of the material reel wheel (8), a first fixed edge block (11) is arranged on the top of the reduction rubber wheel (3), a supporting connecting rod (12) is arranged on the left side of the first fixed edge block (11), and a limiting rod (10) is arranged on the right side of the first fixed edge block (11), a limiting screw (2) is installed on the left side of the limiting rod (10), and a second fixed edge block (13) is installed on the right side of the limiting screw (2); a support plate (9) is installed on the top left side of the bearing bracket (1), a tension rod (7) is installed at the midline position of the support plate (9), and a camshaft disc (14) is arranged on the side of the bearing bracket (1).

2. A material pushing mechanism of a positive and negative pressure forming machine according to claim 1, characterized in that: A pair of supporting wheel frames (5) are fixedly connected to the upper right side of the bearing bracket (1) and are symmetrically arranged. The right side of the supporting wheel frames (5) is fixedly connected to the driving motor (6), and two groups of rollers parallel to each other are installed between the supporting wheel frames (5). The outer rings of the rollers are covered with conveyor belts (4), and the conveyor belts (4) are in contact with each other.

3. A material pushing mechanism of a positive and negative pressure forming machine according to claim 2, characterized in that: The top left side of the bearing bracket (1) is fixedly connected to a support plate (9), and the midline positions on both sides of the support plate (9) are rotatably connected to tension rods (7), and the tension rods (7) are obliquely placed on the bearing bracket (1).

4. A material pushing mechanism of a positive and negative pressure forming machine according to claim 3, characterized in that: A support wheel frame (5) is fixedly connected between the lower part of the bearing bracket (1), and both sides of the support wheel frame (5) are supported by steel plates. Both sides of the support wheel frame (5) are fixedly connected to a reduction rubber wheel (3), and the outer ring of the reduction rubber wheel (3) is wrapped with rubber.

5. The material pushing mechanism of the positive and negative pressure forming machine according to claim 4, characterized in that: The first fixed side block (11) and the second fixed side block (13) between the support wheel frame (5) and the support plate (9) are slidably connected to the outside of the bearing bracket (1); the left sides of the support connecting rod (12) are respectively fixedly connected to the first fixed side block (11) and the second fixed side block (13); the bottoms of the first fixed side block (11) and the second fixed side block (13) are rotatably connected with rollers, and the right side of the first fixed side block (11) is rotatably connected to the limiting rod (10); the limiting rod (10) is engaged with the left side of the second fixed side block (13), and the top of the limiting rod (10) is threadedly connected to the limiting screw (2); the diameter of the limiting screw (2) is twice that of the limiting rod (10).

6. The material pushing mechanism of the positive and negative pressure forming machine according to claim 4, characterized in that: The camshaft disc (14) above the supporting wheel frame (5) is rotatably connected to the side of the supporting bracket (1) below the tensioning rod (7); the inner side of the camshaft disc (14) is a belt pulley disc fixedly connected to the outer side of the camshaft structure; the inner camshaft position of the camshaft disc (14) is in close contact with the tensioning rod (7); a belt pulley disc is installed on the side of the supporting wheel frame (5); and the diameter of the camshaft disc (14) is twice that of the belt pulley disc on the side of the supporting wheel frame (5).

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