Plastic pipe knurling traction machine

Abstract

The utility model discloses a plastic pipe knurling traction machine which comprises a machine frame, a lower machine base and an upper machine base are fixed on the machine frame, the upper machine base is driven by a vertical lifting power device, an upper circulating chain and a lower circulating chain are installed on the upper machine base and the lower machine base respectively, and an upper traction claw and a lower traction claw are installed on the upper circulating chain and the lower circulating chain respectively. The upper traction claw and the lower traction claw are each provided with a containing half groove, knurling patterns are arranged on the inner wall of each containing half groove, the containing half grooves of the upper traction claw and the lower traction claw are combined to form a traction knurling channel, an upstream housing is installed on the machine frame, and a pipe heating device is fixedly installed on the upstream housing. An upper traction claw heating device and a lower traction claw heating device are further fixed to the upper machine base and the lower machine base respectively, the plastic pipe knurling traction machine can conduct traction knurling on a plastic pipe in the normal temperature state, and deformation of the plastic pipe in the knurling process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic pipe knurling technical field especially relates to a plastic pipe knurling traction machine. BACKGROUND

[0002] Plastic pipe material is the material that is common on market at present, utilizes extruder extrusion after forming, and plastic pipe material can be used in various industries. The surface of the current plastic pipe material is generally smooth, and when used in the building decoration industry, the plastic pipe material is buried in the wall, and then covered with concrete. However, due to the smooth surface of the plastic pipe material, the concrete may not adhere to the surface of the plastic pipe, resulting in separation and gap.

[0003] Therefore, the current conventional method is to use knurling rollers for knurling during the production process of the plastic pipe material. After the pipe material is formed by the extruder, the surface of the pipe material still has some temperature, so the knurling rollers are used to knurl the surface of the pipe material online during the running process of the pipe material, and finally the plastic pipe with patterns on the surface is formed.

[0004] However, it is difficult to achieve knurling for some smooth plastic pipes that have been cut off. Since the plastic pipe has been cooled and shaped, heating is required during the later knurling process, which may cause the pipe to deform due to heat, ultimately affecting the quality of the pipe. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problem of providing a plastic pipe knurling traction machine that can knurl plastic pipes at room temperature, reducing deformation of the plastic pipe during the knurling process.

[0006] The utility model discloses a plastic pipe knurling traction machine, including the frame, the frame is fixed with lower bed and vertical sliding installation has upper bed, the upper bed is by vertical lifting power device drive, the upper bed and lower bed are installed with upper circulation chain and lower circulation chain respectively, the upper circulation chain and lower circulation chain are by upper circulation power device and lower circulation power device drive respectively, the upper circulation chain and lower circulation chain are fixedly installed with a plurality of upper traction claw and lower traction claw respectively, the upper traction claw and lower traction claw all are provided with the containing half groove of containing plastic pipe, the inner wall of containing half groove is provided with the knurling pattern of knurling plastic pipe surface, the containing half groove of upper traction claw and lower traction claw combination formed the traction knurling channel of horizontal extension, the frame is fixedly installed with the upstream cover shell of the upper reaches of traction knurling channel, the upstream cover shell is fixedly installed with the pipe heating device of heating the surface of the plastic pipe of axial entry, the upper bed and lower bed still are fixed with the upper traction claw heating device and lower traction claw heating device of heating upper traction claw and lower traction claw respectively.

[0007] As a preferred scheme, the upper traction claw heating device and the lower traction claw heating device are the same structure, the upper traction claw heating device includes an upper heating cover shell fixed on the upstream end of the upper bed, the upper traction claw circulates and passes through the upper heating cover shell, a plurality of infrared heating lamps are fixedly installed in the upper heating cover shell, the infrared heating lamps are arranged along the running track of the upper traction claw, and a temperature sensor for detecting the internal temperature of the upper heating cover shell is arranged in the upper heating cover shell; a cleaning device for cleaning the upper traction claw is arranged at the inlet and / or outlet of the upper heating cover shell.

[0008] As a preferred scheme, the upper heating cover shell includes a cover shell body, the cover shell body includes a straight line segment and a quarter arc segment; the quarter arc segment covers a quarter profile of a traction sprocket of the upper circulation chain; two ends of the cover shell body are respectively fixed with a gantry type connecting end plate, the connecting end plate spans the upper traction claw and is detachably fixed to the upper bed through bolts.

[0009] As a preferred scheme, the cleaning device includes a cleaning fixed plate fixed on the upper heating cover shell, a cleaning brush in contact with the traction claw is fixedly installed on the cleaning fixed plate, and the width of the cleaning brush is greater than or equal to the width of the traction claw.

[0010] As a preferred scheme, the contact end of the cleaning brush and the upper traction claw is provided with a matching profile end consistent with the shape of the upper traction claw.

[0011] As a preferred scheme, the pipe heating device comprises an upstream heating pipe fixed on the frame and located upstream of the upstream cover, an inner hole of the upstream heating pipe corresponding to the traction knurling channel, and a plurality of heating components fixed on the outer periphery of the upstream heating pipe to heat the surface of the plastic pipe passing through the inner hole.

[0012] As a preferred scheme, the upstream heating pipe comprises a heating connecting flange part fixed on the frame and a polygonal pipe segment part, and the heating components are fixed on each plane of the outer periphery of the polygonal pipe segment part.

[0013] As a preferred scheme, the knurling pattern comprises a plurality of equidistantly distributed knurling protrusions.

[0014] As a preferred scheme, at least two vertical guide rods are fixed on the frame, a lifting sleeve movably sleeved with the vertical guide rods is fixed on the upper frame, and the vertical lifting power device is a pneumatic cylinder or a hydraulic cylinder, which is fixed between the upper frame and the frame.

[0015] The utility model discloses the effect is: because the plastic pipe knurling traction machine, including frame, the fixed lower bed of frame and vertical sliding installation has upper bed, the upper bed is by vertical lifting power device drive, the upper bed and lower bed are installed respectively with the upper circulation chain and lower circulation chain, the upper circulation chain and lower circulation chain are respectively by the upper circulation power device and lower circulation power device drive, the upper circulation chain and lower circulation chain are respectively fixed mounting with a plurality of upper traction claw and lower traction claw, the upper traction claw and lower traction claw all are provided with the accommodation half -groove of accommodating plastic pipe, the inner wall of accommodation half -groove is provided with the knurling pattern of the knurling on the plastic pipe surface, the upper traction claw and lower traction claw's accommodation half -groove combination formed the traction knurling channel of horizontal extension, the upstream fixed mounting of traction knurling channel on the frame has upstream casing, the upstream casing fixed mounting has the pipe heating device of the plastic pipe surface of axial entry to heating, the upper bed and lower bed still are fixed respectively with the upper traction claw heating device and lower traction claw heating device of the upper traction claw and lower traction claw heating, therefore, the plastic pipe enters from the upstream casing first by pipe heating device heating, to let the plastic pipe's surface soften, and simultaneously because the subsequent upper traction claw heating device and lower traction claw heating device back to the upper traction claw and lower traction claw heating, therefore pipe heating device's heating temperature to pipe material can be relatively low, like this can reduce the deformation of pipe material because of temperature is too high, and simultaneously, utilize the circulation of upper traction claw and lower traction claw and can constantly draw every plastic pipe, provide the conveying power of pipe material, in the process of pipe material conveying, the plastic pipe is extruded by knurling pattern when running in the traction knurling channel, thereby realizes conveying while knurling, therefore the plastic pipe knurling traction machine can draw knurling to the plastic pipe section of normal temperature, avoids the deformation of pipe material caused by knurling as far as possible.

[0016] And because the structure of upper traction claw heating device and lower traction claw heating device is same, the upper heating casing of the upper traction claw heating device is fixed on the upstream end of upper bed, the upper traction claw circulates and passes in the upper heating casing, a plurality of infrared heating lamps are fixedly installed in the upper heating casing and are dispersedly distributed, the infrared heating lamps are arranged along the running track of the upper traction claw, and a temperature sensor is arranged in the upper heating casing to detect the temperature inside the upper heating casing; a cleaning device is arranged at the inlet and / or outlet of the upper heating casing to clean the upper traction claw. In the upper traction claw heating device, the dispersedly distributed infrared heating lamps on the heating casing can better control the heating area, realize segmented heating and reduce energy consumption. The temperature sensor can monitor the temperature in the heating casing to ensure that the temperature is controllable. The cleaning device can clean the circulating traction claw to avoid the situation that the plastic is adhered to the traction claw during knurling, causing unclear knurling patterns.

[0017] And since the upper heating cover shell comprises a cover shell body, the cover shell body comprises a straight section and a quarter arc section; the quarter arc section covers a quarter profile of a traction sprocket of the upper circulating chain; two ends of the cover shell body are respectively fixed with a gantry type connecting end plate, the connecting end plate spans the upper traction claw and is detachably fixed with the upper machine seat through bolts, so that the heating area is as close as possible to the pipe material entering position without hindering the pipe material from entering, ensuring that the traction claw is in contact with the pipe material for the first time after heating, and ensuring good knurling effect. And the cover shell body is detachably fixed, so that the entire heating cover shell can be conveniently removed, and the internal infrared heating lamp can be conveniently replaced.

[0018] And since the cleaning device comprises a cleaning fixed plate fixed on the upper heating cover shell, a cleaning brush in contact with the traction claw is fixedly installed on the cleaning fixed plate, and the width of the cleaning brush is greater than or equal to the width of the traction claw. The contact end of the cleaning brush and the upper traction claw is provided with a matching profile end that matches the shape of the upper traction claw. Therefore, the installation of the cleaning fixed plate is very simple, and the cleaning brush can cover the entire traction claw, ensuring good cleaning effect.

[0019] And since the upstream heating pipe comprises a heating connecting flange part fixed on the machine frame and a polygonal pipe section part, the heating assembly is fixed on each plane of the outer periphery of the polygonal pipe section part, and the plurality of heating assemblies can quickly heat the surface of the plastic pipe from all around, so that the surface is quickly softened, thereby facilitating subsequent knurling operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further explained in connection with the drawings and embodiments.

[0021] Figure 1 is a structure schematic view of the utility model embodiment;

[0022] Figure 2 is a structure schematic view of the utility model embodiment hidden part machine frame;

[0023] Figure 3 is Figure 1 the right view of;

[0024] Figure 4 is a part structure schematic view of the upper machine seat and upper circulating chain of the utility model embodiment;

[0025] Figure 5 is Figure 4 structure schematic view of another angle;

[0026] Figure 6 is Figure 5 the right view of;

[0027] Figure 7 is Figure 6 a sectional view along A-A;

[0028] Figure 8 is Figure 7 an enlarged view of the structure at I in Fig. 4;

[0029] In the drawings: 1. frame; 2. lower base; 3. upper base; 4. vertical lifting power device; 5. upper traction claw; 6. lower traction claw; 7. upstream cover shell; 8. upper heating cover shell; 81. straight section; 82. arc section; 83. connecting end plate; 9. infrared heating lamp; 10. temperature sensor; 11. cleaning fixed plate; 12. cleaning brush; 13. vertical guide rod; 14. lifting sleeve; 15. upstream heating pipe; 151. heating connecting flange part; 152. pipe section part; 153. heating assembly; 16. wire harness containing cavity; 17. upper circulating power device; 18. lower circulating power device. DETAILED DESCRIPTION

[0030] The utility model will be described in further detail below through specific embodiments.

[0031] As Figures 1-8 shown, a plastic pipe knurling traction machine, comprising a frame 1, the frame 1 is fixed with lower base 2 and vertically slidingly installs upper base 3, the upper base 3 is driven by vertical lifting power device 4, the upper base 3 and lower base 2 are respectively installed with upper circulating chain and lower circulating chain, the upper circulating chain and lower circulating chain are respectively driven by upper circulating power device 17 and lower circulating power device 18, the upper circulating chain and lower circulating chain are respectively fixedly installed with a plurality of upper traction claws 5 and lower traction claws 6, the upper traction claw 5 and lower traction claw 6 are all provided with containing half slot containing plastic pipe, the inner wall of containing half slot is provided with knurling pattern knurling the surface of plastic pipe, the containing half slot of upper traction claw 5 and lower traction claw 6 combination forms the traction knurling channel extending horizontally, the frame 1 is fixedly installed with upstream cover shell 7 at the upstream of traction knurling channel, the upstream cover shell 7 is fixedly installed with pipe heating device heating the surface of plastic pipe entering axially, the upper base 3 and lower base 2 are also respectively fixed with upper traction claw 5 heating device and lower traction claw 6 heating device heating upper traction claw 5 and lower traction claw 6.

[0032] The knurling patterns are a plurality of equidistantly distributed knurling protrusions. The rack 1 is fixed with at least two vertical guide rods 13, the upper rack 3 is fixed with a lifting sleeve 14 movably sleeved with the vertical guide rods 13, the vertical lifting power device 4 is a pneumatic cylinder or a hydraulic cylinder, and the pneumatic cylinder or the hydraulic cylinder is fixed between the upper rack 3 and the rack 1. The structures of the upper pulling claw 5 heating device and the lower pulling claw 6 heating device are the same. The upper pulling claw 5 heating device comprises an upper heating shell 8 fixed on the upstream end of the upper rack 3, the upper pulling claw 5 circulates and passes through the upper heating shell 8, a plurality of discrete infrared heating lamps 9 are fixedly installed in the upper heating shell 8, the infrared heating lamps 9 are arranged along the running track of the upper pulling claw 5, a temperature sensor 10 for detecting the internal temperature of the upper heating shell 8 is arranged in the upper heating shell 8, and cleaning devices for cleaning the upper pulling claw 5 are arranged at the inlet and / or outlet of the upper heating shell 8.

[0033] In the embodiment, the upper heating shell 8 comprises a shell body, the shell body comprises a straight section 81 and a quarter arc section 82, the quarter arc section 82 covers a quarter profile of a traction sprocket of the upper circulating chain, and two ends of the shell body are respectively fixed with a gantry type connecting end plate 83 which spans the upper pulling claw 5 and is detachably fixed with the upper rack 3 through bolts. The cleaning device comprises a cleaning fixed plate 11 fixed on the upper heating shell 8, the cleaning fixed plate 11 is fixedly installed with a cleaning brush 12 in contact with the pulling claw, the width of the cleaning brush 12 is greater than or equal to the width of the pulling claw, and the contact end of the cleaning brush 12 with the upper pulling claw 5 is arranged in a matching profile end which matches the shape of the upper pulling claw 5. In the embodiment, the upper end of the upper heating shell 8 is further provided with a wire harness containing cavity 16 for facilitating wire harness wiring, and the wire harness containing cavity 16 is provided with a wire hole for facilitating wire harness threading.

[0034] In the embodiment, the pipe heating device comprises an upstream heating pipe 15 fixed on the rack 1 and located upstream of the upstream shell 7, the inner hole of the upstream heating pipe 15 corresponds to the traction knurling channel, and a plurality of heating assemblies 153 for heating the surface of the plastic pipe passing through the inner hole are fixedly installed on the outer periphery of the upstream heating pipe 15. The upstream heating pipe 15 comprises a heating connection flange part 151 fixed on the rack 1 and a polygonal pipe section part 152, and the heating assemblies 153 are fixed on each plane of the outer periphery of the polygonal pipe section part 152. The heating assembly 153 can be an electric heating wire, and an infrared heating lamp 9 or the like can also be selected.

[0035] In operation, the plastic tube is first heated by the pipe heating device when entering the upstream cover 7. The plurality of heating assemblies 153 on the outer periphery of the polygonal pipe section 152 can quickly heat the surface of the plastic tube from all directions, so that the surface of the plastic tube is softened. At the same time, the infrared heating lamps 9 of the upper and lower traction claw heating devices heat the upper and lower traction claws 5 and 6. The discrete distribution of the infrared heating lamps 9 can better control the heating area according to the trajectory of the traction claws, ensure that the heated traction claws are in contact with the pipe material at the first time, realize segmented heating, and reduce energy consumption. In this way, the heating temperature of the pipe heating device can be relatively low, and the temperature sensor 10 on the heating cover can monitor the temperature in the heating cover to ensure that the temperature is controllable, thereby reducing the deformation of the pipe material due to excessive temperature. At the same time, the continuous operation of the upper and lower traction claws 5 and 6 driven by the upper and lower circulating power devices 17 and 18 can continuously pull each plastic tube to provide the conveying power of the pipe material. In the process of pipe material conveying, the plastic tube is extruded by the rolling knurling while running in the traction rolling knurling channel, so that the pipe is rolled while conveying. Therefore, the plastic tube rolling traction machine is also suitable for traction rolling of the plastic tube section at room temperature to avoid pipe deformation caused by rolling as much as possible. The cleaning brush 12 can clean the upper and lower traction claws 5 and 6 in circulation to avoid the situation that the rolling pattern is not clear due to the adhesion of plastic on the traction claws during rolling.

[0036] After a period of use, the infrared heating lamps 9 need to be replaced in time. The connection end plate 83 is detachably fixed to the machine base, and the bolts are removed to conveniently take down the entire heating cover.

[0037] The air path system, servo motor, gear transmission mechanism, and screw nut mechanism mentioned in the embodiment are all conventional technologies. The specific structure and principle of the cylinder, motor, and other transmission mechanisms, as well as other designs, are disclosed in detail in the "Mechanical Design Manual, Fifth Edition" printed in Beijing in April 2008 for the 28th time. The structure is clear and the principle is clear. The vacuum element, gas circuit, and program control are disclosed in detail in the SMC training textbook of modern practical pneumatic technology, published by the Mechanical Industry Press on August 1, 2008. It is shown that the air path structure in the embodiment is also a prior art, and the structure is clear and the principle is clear. The control of the motor and the travel switch are introduced in detail in the book "Motor Drive and Speed Regulation" published by the Chemical Industry Press on July 1, 2015. Therefore, the circuit and the air path connection are clear.

[0038] The above-described embodiments are only preferred embodiments of the present application, and are not intended to limit the scope of the present application. Various modifications and improvements can be made to the technical solutions of the present application without departing from the design spirit of the present application, and all such modifications and improvements shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A plastic pipe knurling traction machine, comprising a frame, characterized in that: The frame is fixed with a lower base and vertically slidably mounted with an upper base. The upper base is driven by a vertical lifting power device. An upper circulating chain and a lower circulating chain are respectively mounted on the upper and lower bases, and are driven by an upper circulating power device and a lower circulating power device, respectively. Several upper traction claws and lower traction claws are fixedly mounted on the upper and lower circulating chains, respectively. Each upper and lower traction claw is provided with a receiving half-groove to accommodate a plastic tube. The inner wall of the receiving half-groove is provided with a knurled pattern on the surface of the plastic tube. The receiving half-grooves of the upper and lower traction claws combine to form a horizontally extending traction knurled channel. An upstream cover is fixedly mounted on the frame upstream of the traction knurled channel. A tube heating device for heating the surface of the axially entering plastic tube is fixedly mounted on the upstream cover. Upper and lower bases are also fixed with upper and lower traction claw heating devices for heating the upper and lower traction claws, respectively.

2. The plastic pipe knurling traction machine as described in claim 1, characterized in that: The upper traction claw heating device and the lower traction claw heating device have the same structure. The upper traction claw heating device includes an upper heating cover fixed to the upstream end of the upper base. The upper traction claw runs cyclically and passes through the upper heating cover. Several discretely distributed infrared heating lamps are fixedly installed inside the upper heating cover. The infrared heating lamps are arranged along the running trajectory of the upper traction claw. A temperature sensor for detecting the internal temperature is provided inside the upper heating cover. A cleaning device for cleaning the upper traction claw is provided at the inlet and / or outlet of the upper heating cover.

3. The plastic pipe knurling traction machine as described in claim 2, characterized in that: The upper heating cover includes a cover body, which includes a straight section and a quarter arc section; the quarter arc section covers a quarter of the contour of the traction sprocket of the upper circulating chain; gantry-type connecting end plates are fixed at both ends of the cover body, and the connecting end plates span the upper traction claw and are detachably fixed to the upper machine base by bolts.

4. The plastic pipe knurling traction machine as described in claim 2, characterized in that: The cleaning device includes a cleaning fixing plate fixed on the upper heating cover, and a cleaning brush that contacts the traction claw is fixedly installed on the cleaning fixing plate. The width of the cleaning brush is greater than or equal to the width of the traction claw.

5. A plastic pipe knurling traction machine as described in claim 4, characterized in that: The contact end between the cleaning brush and the upper traction claw is configured to match the shape of the upper traction claw.

6. A plastic pipe knurling traction machine as described in claim 5, characterized in that: The pipe heating device includes an upstream heating pipe fixed on the frame and located in the upstream housing. The inner hole of the upstream heating pipe corresponds to the traction knurling channel. Multiple heating components for heating the surface of the plastic pipe passing through the inner hole are fixedly installed on the outer periphery of the upstream heating pipe.

7. A plastic pipe knurling traction machine as described in claim 6, characterized in that: The upstream heating pipe includes a heating connection flange fixed on the frame and a polygonal pipe section, with the heating assembly fixed on each plane of the outer periphery of the polygonal pipe section.

8. A plastic pipe knurling traction machine as described in claim 1, characterized in that: The knurling pattern consists of multiple knurled protrusions distributed at equal intervals.

9. A plastic tube knurling traction machine as described in claim 1, characterized in that: At least two vertical guide rods are fixed on the frame, and a lifting sleeve that is movably fitted with the vertical guide rods is fixed on the upper base. The vertical lifting power device is a cylinder or a hydraulic cylinder, and the cylinder or hydraulic cylinder is fixed between the upper base and the frame.

Images