Constant-pressure feeding PU foaming machine for wheelchair armrest production

Abstract

The utility model relates to the technical field of foaming machines, in particular to a constant-pressure feeding PU (polyurethane) foaming machine for wheelchair armrest production, which comprises a base, a foaming machine body is arranged at the top end of the base, wheels are arranged at four corners of the bottom end of the base, a rack is arranged at the bottom end of the base, and a sliding component is arranged in an inner cavity of the rack. Two brake plates are arranged at the bottom end of the sliding assembly, a lifting assembly is arranged on the front side of the top end of the base, and a handrail is arranged at the top end of the lifting assembly. According to the constant-pressure feeding PU foaming machine for wheelchair armrest production, through the arrangement of the wheels, the device can be conveniently moved, then the position of the device can be conveniently transferred, the use convenience of the device is improved, and the problems that in the prior art, a foaming machine is inconvenient to move in the actual use process, the position of the foaming machine can be moved only by lifting the foaming machine by a user, and the production efficiency is high are solved. And the convenience is limited during use.

Description

TECHNICAL FIELD

[0001] The utility model relates to foaming machine technical field, specifically for the constant pressure feed PU foaming machine for wheelchair armrest production. BACKGROUND

[0002] Foaming machine first appeared in foreign countries, its original model is to adopt impeller high speed rotation to make foam, so it is also called "bubble machine". Later, with the continuous progress of technology, the technical content of foaming machine is continuously improved, and new models are continuously emerging, forming different technical systems. China began to use foaming machine as early as in the 1950s, but it is not a special foaming machine, but a mortar mixer. That is, the foaming agent is directly added to the mortar mixer or concrete mixer, and the foaming agent and the mortar or concrete are stirred together to generate foam. Around the 1970s, special foaming agent, i.e. high-speed impeller foaming machine, began to appear. Later, it has been continuously upgraded and replaced, and now it has developed into the third generation model mainly based on high-pressure aeration, which can basically meet the needs of foam concrete.

[0003] However, the foaming machine of the prior art is inconvenient to move in actual use, and the user needs to lift it to move its position, which is limited in convenience when using. In view of this problem, the constant pressure feed PU foaming machine for wheelchair armrest production is provided. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing the constant pressure feed PU foaming machine for wheelchair armrest production to solve the problems in the above background technology. In order to achieve the above purpose, the utility model provides the following technical scheme: the constant pressure feed PU foaming machine for wheelchair armrest production, including base, the top of base is provided with foaming machine, the bottom of base is provided with wheel in four corners, the bottom of base is provided with rack, the inner chamber of rack is provided with sliding assembly, the bottom of sliding assembly is provided with two brake plates, the front side of top of base is provided with lifting assembly, the top of lifting assembly is provided with armrest.

[0005] Preferably, the sliding assembly comprises a first motor, a lead screw, a sliding block and a limiting assembly, the first motor is arranged at the rear end of the rack, the output end of the first motor extends into the inner chamber of the rack, one end of the lead screw is rotatably connected to the inner chamber of the rack through a bearing, the other end of the lead screw is fixedly connected to the output end of the first motor, two sliding blocks are respectively screwed on the front and rear sides of the outer wall of the lead screw and are fixedly connected to the two brake plates, and the limiting assembly is arranged at the top end of the inner chamber of the rack and is fixedly connected to the top ends of the two sliding blocks.

[0006] Preferably, the threads on the front and rear sides of the outer wall of the lead screw are oppositely arranged.

[0007] Preferably, the limiting assembly comprises a limiting groove and limiting blocks, the limiting groove is arranged at the top of the inner cavity of the frame, and the two limiting blocks are slidably embedded in the inner cavity of the limiting groove and are fixedly connected with the top of the two sliding blocks.

[0008] Preferably, the inner cavity of the limiting groove and the outer wall of the limiting block are matched and both are in the shape of T.

[0009] Preferably, the lifting assembly comprises a second motor, a screw rod, a moving cylinder and an extension assembly, the second motor is arranged at the top of the base, the screw rod is fixedly connected with the output end of the second motor, the moving cylinder is screwed on the outer wall of the screw rod and is fixedly connected with the bottom of the handrail, and the extension assembly is arranged at the top of the base and is fixedly connected with the handrail.

[0010] Preferably, the extension assembly comprises an extension cylinder, an extension rod and a connecting assembly, the extension cylinder is arranged at the top of the base, the extension rod is slidably inserted into the inner cavity of the extension cylinder and is fixedly connected with the bottom of the handrail, and the connecting assembly is arranged on one side of the inner wall of the extension cylinder and is fixedly connected with the outer wall of the extension rod.

[0011] Preferably, the connecting assembly comprises a connecting groove and a connecting block, the connecting groove is arranged on one side of the inner wall of the extension cylinder, and the connecting block is slidably embedded in the inner cavity of the connecting groove and is fixedly connected with the outer wall of the extension rod.

[0012] Preferably, the inner cavity of the connecting groove and the outer wall of the connecting block are matched and both are in the shape of swallowtail.

[0013] Preferably, the sides away from each other of the two brake plates are matched with the outer wall of the wheel and are provided with anti-skid edges.

[0014] Compared with the prior art, the device has the advantages that:

[0015] 1. The device is convenient to move, and the position of the device can be conveniently shifted, thereby improving the convenience of the device in use, solving the problem that the foaming machine in the prior art is inconvenient to move in actual use, and the position of the device needs to be lifted by the user to move, and the convenience in use is limited, the two brake plates are simultaneously slid to the left and right sides of the bottom of the base by the sliding assembly, thereby the two brake plates are respectively in contact with the wheel, so that the rolling friction between the wheel and the ground is converted into sliding friction, thereby the position of the device can be fixed, and the movement of the device in use is prevented, and the stability of the device in use is improved.

[0016] 2. The handrail is arranged, the handrail can push the device to move under the action of the wheel, the height of the handrail can be adjusted through the arrangement of the lifting assembly, and then the handrail of different height users can be pushed, and the flexibility of the device during use is improved, and the device is simple to operate and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective structural schematic view of the utility model;

[0018] Figure 2 It is a bottom view of the utility model;

[0019] Figure 3 It is an A place enlarged view of the utility model Figure 2 ;

[0020] Figure 4 It is a front view of the telescopic cylinder of the utility model;

[0021] Figure 5 It is a structural schematic view of the limiting block of the utility model.

[0022] In the drawing: 1, base; 2, foaming machine; 3, handrail; 4, wheel; 5, rack; 6, brake plate; 7, screw rod; 8, moving cylinder; 9, telescopic cylinder; 10, telescopic rod; 11, connecting groove; 12, connecting block; 13, first motor; 14, screw rod; 15, sliding block; 16, limiting groove; 17, limiting block; 18, second motor. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled workers in the art without creative labor belong to the protection scope of the utility model.

[0024] Please refer to Figures 1 to 5The utility model provides a technical scheme: Wheelchair armrest production uses constant pressure feed PU foaming machine, including base 1, the top of base 1 is provided with foaming machine 2, the bottom of base 1 four corners is provided with wheel 4, the bottom of base 1 is provided with rack 5, the inner chamber of rack 5 is provided with sliding assembly, the bottom of sliding assembly is provided with two brake plates 6, the top of base 1 front side is provided with lifting assembly, the top of lifting assembly is provided with armrest 3, through the setting of wheel 4, the movement of the device can be conveniently, and then the position of the device can be conveniently shifted, the convenience of the device when using is improved, the foaming machine 2 of prior art is inconvenient to move in actual use, the position of the device can be moved only by lifting it for the user, and the convenience is limited when using, two brake plates 6 are driven by sliding assembly and slide to the left and right sides of the bottom of base 1 simultaneously, and then two brake plates 6 can be contacted with wheel 4 respectively, so that the rolling friction between wheel 4 and ground is converted into sliding friction, so that the position of the device can be fixed, the movement of the device when using is prevented, the stability of the device when using is improved, through the setting of armrest 3, the device can be moved under the action of wheel 4 by pushing armrest 3, through the setting of lifting assembly, the height of armrest 3 can be adjusted, and then the user of different heights can push armrest 3 conveniently, the flexibility of the device when using is improved, and the operation is simple and convenient to use.

[0025] In the embodiment, the sliding assembly includes a first motor 13, a lead screw 14, sliding blocks 15, and a limiting assembly. The first motor 13 is arranged at the rear end of the rack 5, the output end of the first motor 13 extends into the inner chamber of the rack 5, one end of the lead screw 14 is rotatably connected to the inner chamber of the rack 5 through a bearing, the other end of the lead screw 14 is fixedly connected to the output end of the first motor 13, two sliding blocks 15 are respectively screwed on the front and rear sides of the outer wall of the lead screw 14 and are fixedly connected to the two brake plates 6, and the limiting assembly is arranged at the top end of the inner chamber of the rack 5 and is fixedly connected to the top ends of the two sliding blocks 15. The first motor 13 is started to drive the lead screw 14 to rotate, and then the relative screw rotation force is generated on the front and rear sides of the outer wall of the lead screw 14, the two sliding blocks 15 drive the two brake plates 6 to slide simultaneously under the limiting action of the limiting grooves 16 and the limiting blocks 17, the two brake plates 6 are contacted with the wheel 4 respectively, so that the rolling friction between the wheel 4 and the ground is converted into sliding friction, the position of the device can be fixed, the movement of the device when using is prevented, and the stability of the device when using is improved.

[0026] In the embodiment, the threads on the front and rear sides of the outer wall of the lead screw 14 are oppositely arranged, so that the relative screw rotation force is generated on the front and rear sides of the outer wall of the lead screw 14 when the lead screw 14 rotates, the two sliding blocks 15 slide simultaneously under the limiting action of the limiting grooves 16 and the limiting blocks 17.

[0027] In the embodiment, the limiting assembly comprises the limiting groove 16 and the limiting blocks 17. The limiting groove 16 is arranged at the top of the inner cavity of the rack 5. The two limiting blocks 17 are slidably embedded in the inner cavities of the limiting groove 16 and are fixedly connected with the top ends of the two sliding blocks 15. Under the joint action of the limiting groove 16 and the limiting blocks 17, the sliding block 15 can be prevented from rotating with the screw rod 14 when the screw rod 14 rotates, thereby improving the stability of the sliding assembly in use.

[0028] In the embodiment, the inner cavities of the limiting groove 16 and the outer walls of the limiting blocks 17 are matched and are both in the shape of “T”. The one end of the limiting block 17 can always be embedded in the inner cavity of the limiting groove 16, thereby improving the stability of the limiting assembly in use.

[0029] In the embodiment, the lifting assembly comprises the second motor 18, the screw rod 7, the moving cylinder 8 and the telescopic assembly. The second motor 18 is arranged at the top of the base 1. The screw rod 7 is fixedly connected with the output end of the second motor 18. The moving cylinder 8 is screwed on the outer wall of the screw rod 7 and is fixedly connected with the bottom end of the handrail 3. The telescopic assembly is arranged at the top of the base 1 and is fixedly connected with the handrail 3. When the second motor 18 is started, the second motor 18 drives the screw rod 7 to rotate. Under the action of the thread rotation force on the outer wall of the screw rod 7, the moving cylinder 8 drives the handrail 3 to slide up and down along a straight line under the limiting action of the telescopic assembly when the screw rod 7 rotates, thereby realizing the height adjustment of the handrail 3 and improving the flexibility of the device in use.

[0030] In the embodiment, the telescopic assembly comprises the telescopic cylinder 9, the telescopic rod 10 and the connecting assembly. The telescopic cylinder 9 is arranged at the top of the base 1. The telescopic rod 10 is slidably inserted into the inner cavity of the telescopic cylinder 9 and is fixedly connected with the bottom end of the handrail 3. The connecting assembly is arranged on one side of the inner wall of the telescopic cylinder 9 and is fixedly connected with the outer wall of the telescopic rod 10. When the handrail 3 slides up and down, the telescopic rod 10 can synchronously slide up and down in the inner cavity of the telescopic cylinder 9. Under the joint action of the telescopic rod 10 and the telescopic cylinder 9, the moving cylinder 8 can be prevented from rotating with the screw rod 7 when the screw rod 7 rotates, thereby improving the stability of the lifting assembly in use.

[0031] In the embodiment, the connecting assembly comprises the connecting groove 11 and the connecting block 12. The connecting groove 11 is arranged on one side of the inner wall of the telescopic cylinder 9. The connecting block 12 is slidably embedded in the inner cavity of the connecting groove 11 and is fixedly connected with the outer wall of the telescopic rod 10. Under the joint action between the connecting block 12 and the connecting groove 11, the one end of the telescopic rod 10 can always be inserted into the inner cavity of the telescopic cylinder 9, thereby improving the stability of the telescopic assembly in use.

[0032] In the embodiment, the inner cavities of the connecting groove 11 and the outer walls of the connecting block 12 are matched and are both in the shape of dovetail. The one end of the connecting block 12 can always be embedded in the inner cavity of the connecting groove 11, thereby improving the stability of the connecting assembly in use.

[0033] In the embodiment, the two brake plates 6 are matched with the outer wall circumference of the wheel 4 on the side far away from each other and are provided with anti-skid edges, so that the roughness of the outer wall of the brake plate 6 is improved, and the friction force when the brake plate 6 contacts the wheel 4 is improved.

[0034] The basic principle, main features and advantages of the present application are shown and described above. The technical personnel in the industry should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A constant pressure feeding PU foaming machine for wheelchair armrest production, comprising a base (1), characterized in that: The top end of the base (1) is provided with a foaming machine (2), the bottom end of the base (1) is provided with wheels (4) at four corners, the bottom end of the base (1) is provided with a rack (5), the inner cavity of the rack (5) is provided with a sliding assembly, the bottom end of the sliding assembly is provided with two brake plates (6), the front side of the top end of the base (1) is provided with a lifting assembly, and the top end of the lifting assembly is provided with a handrail (3).

2. The constant pressure feeding PU foaming machine for wheelchair armrest production according to claim 1, characterized in that: The sliding assembly comprises a first motor (13), a lead screw (14), a sliding block (15) and a limiting assembly, the first motor (13) is arranged at the rear end of the rack (5), the output end of the first motor (13) extends to the inner cavity of the rack (5), one end of the lead screw (14) is rotatably connected to the inner cavity of the rack (5), the other end of the lead screw (14) is fixedly connected with the output end of the first motor (13), two sliding blocks (15) are respectively screwed on the outer walls of the lead screw (14) at front and rear sides and are fixedly connected with the two brake plates (6), and the limiting assembly is arranged at the top end of the inner cavity of the rack (5) and is fixedly connected with the top ends of the two sliding blocks (15).

3. The constant pressure feeding PU foaming machine for wheelchair armrest production according to claim 2, characterized in that: The threads on the outer walls of the lead screw (14) at front and rear sides are oppositely arranged.

4. The constant pressure feeding PU foaming machine for wheelchair armrest production according to claim 2, characterized in that: The limiting assembly comprises a limiting groove (16) and a limiting block (17), the limiting groove (16) is formed at the top end of the inner cavity of the rack (5), and the two limiting blocks (17) are slidably embedded in the inner cavities of the limiting grooves (16) and are fixedly connected with the top ends of the two sliding blocks (15).

5. The constant pressure feeding PU foaming machine for wheelchair armrest production according to claim 4, characterized in that: The inner cavities of the limiting grooves (16) and the outer walls of the limiting blocks (17) are matched and are both in the shape of "T".

6. The constant pressure feeding PU foaming machine for wheelchair armrest production according to claim 1, characterized in that: The lifting assembly comprises a second motor (18), a screw rod (7), a moving cylinder (8) and an extension assembly, the second motor (18) is arranged at the top end of the base (1), the screw rod (7) is fixedly connected with the output end of the second motor (18), the moving cylinder (8) is screwed on the outer wall of the screw rod (7) and is fixedly connected with the bottom end of the handrail (3), and the extension assembly is arranged at the top end of the base (1) and is fixedly connected with the handrail (3).

7. The constant pressure feeding PU foaming machine for wheelchair armrest production according to claim 6, characterized in that: The extension assembly comprises an extension cylinder (9), an extension rod (10) and a connecting assembly, the extension cylinder (9) is arranged at the top end of the base (1), the extension rod (10) is slidably inserted into the inner cavity of the extension cylinder (9) and is fixedly connected with the bottom end of the handrail (3), and the connecting assembly is arranged on one side of the inner wall of the extension cylinder (9) and is fixedly connected with the outer wall of the extension rod (10).

8. The constant pressure feeding PU foaming machine for wheelchair armrest production according to claim 7, characterized in that: The connecting assembly comprises a connecting groove (11) and a connecting block (12), the connecting groove (11) is formed on one side of the inner wall of the extension cylinder (9), and the connecting block (12) is slidably embedded in the inner cavity of the connecting groove (11) and is fixedly connected with the outer wall of the extension rod (10).

9. The constant pressure feeding PU foaming machine for wheelchair armrest production according to claim 8, characterized in that: The inner cavities of the connecting grooves (11) and the outer walls of the connecting blocks (12) are matched and are both in the shape of "swallowtail".

10. The constant pressure feeding PU foaming machine for wheelchair armrest production according to claim 1, characterized in that: The sides, away from each other, of the two brake plates (6) are matched with the outer wall circumferences of the wheels (4) and are both provided with anti-skid edges.

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