Feeding clamping mechanism for pipe bending machine

Abstract

The utility model discloses a feeding clamping mechanism for a pipe bender, which relates to the technical field of pipe benders and comprises a fixed seat, a side plate is fixed on the right side close to the upper edge and the lower edge, two groups of travel grooves are arranged on the outer wall of the right side of the fixed seat, and a bidirectional screw rod is rotatably arranged in each group of travel grooves. The outer wall of each set of bidirectional lead screw is sleeved with a pair of driven sleeves in a threaded mode, and the outer walls of the driven sleeves are provided with clamp assemblies extending to the outer side of the fixing base. The clamp assembly comprises a connecting arm fixed to the side wall of the driven sleeve, and a base is arranged at the end, away from the driven sleeve, of the connecting arm. Through the arrangement of the clamp assembly, the base can be rotated according to the size of a pipe, the restraining seats suitable for the pipe are in a vertically symmetrical state, the two sets of restraining seats are close to each other along with rotation of the two-way lead screw, and finally the purpose of positioning and clamping the pipe is achieved. And the application range of the device is expanded in a disguised manner.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe bending machines, in particular to a feeding and clamping mechanism for pipe bending machines. Background Art

[0002] Pipe bending machines are mainly used in power construction, road and railway construction, pipeline laying and repair. They have the advantages of multiple functions, reasonable structure and simple operation. Compared with CNC pipe bending equipment, they are cheap and easy to use. They occupy a leading position in the domestic pipe bending machine market.

[0003] The existing patent (authorization announcement number: CN 218503194 U) discloses a feeding clamping device for a hydraulic pipe bending machine, which clamps and fixes the workpiece through upper and lower clamping seats, and can clamp and fix workpieces of different sizes. A support seat is arranged on one side to provide support and stability for the workpiece during the pipe bending operation. It has a wider range of use and is more in line with actual use needs.

[0004] However, the above technical solution still has certain defects. The sizes of the two sets of clamps are fixed, which is difficult to meet the needs of pipes of different sizes. If the diameter of the pipe is too large, the two sides of the clamps will contact the outer wall of the pipe, which will cause marks due to clamping. On the contrary, if the pipes are smaller, the two sets of clamps are in contact and still cannot complete the purpose of clamping and positioning the pipes. Therefore, a feeding clamping mechanism for a pipe bending machine is proposed. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a feeding and clamping mechanism for a pipe bending machine to solve the technical problems raised in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a feeding clamping mechanism for a pipe bending machine, comprising a fixed seat, a side plate is fixed at the right side near the upper and lower edges, two groups of travel grooves are opened on the right outer wall of the fixed seat, a bidirectional screw rod is rotatably arranged in each group of the travel grooves, a pair of driven sleeves are threadedly sleeved on the outer wall of each group of the bidirectional screw rods, and a clamp assembly extending to the outside of the fixed seat is arranged on the outer wall of the driven sleeve;

[0007] The clamp assembly includes a connecting arm fixed to the side wall of the driven sleeve, a base is provided at the end of the connecting arm away from the driven sleeve, four groups of constraint seats are fixed to the outer wall of the base, a blind hole is provided at the end of the connecting arm close to the base, a connecting rod in the blind hole is slidably provided in the base, one end of the connecting rod is located in the blind hole and is provided with a square bar, a constraint rod is fixed to the end of the square bar away from the connecting rod, a large diameter circular groove is provided at the middle position of the blind hole, and a square groove is provided on the inner wall of the large diameter circular groove away from the connecting rod.

[0008] As an optimal technical solution for a feeding clamping mechanism for a pipe bending machine of the utility model, the connecting rod extends out of the base at one end away from the connecting arm, a matching channel is opened in the base at the contact position with the connecting rod, and an adjusting disk is fixed to the end of the connecting rod.

[0009] As an optimal technical solution for a feeding clamping mechanism for a pipe bending machine of the utility model, the outer wall of the constraint rod is sleeved with a spring, and both ends of the spring are sleeved with constraint rings, the constraint ring near the left end of the constraint rod is fixedly connected to the constraint rod and the spring, and the constraint ring near the right end of the spring is fixed to the inner wall of the blind hole.

[0010] As a preferred technical solution of a feeding clamping mechanism for a pipe bending machine of the utility model, a motor is installed on the top of the fixed seat, and the output end of the motor is connected to the end of one set of bidirectional screw rods through a coupling.

[0011] As an optimal technical solution for a feeding clamping mechanism for a pipe bending machine of the utility model, the bottom outer walls of the two groups of bidirectional screw rods are sleeved with a transmission belt, and a pulley is provided at the contact position between the outer wall of the bidirectional screw rod and the transmission belt.

[0012] As an optimal technical solution for a feeding clamping mechanism for a pipe bending machine of the utility model, an electric push rod is embedded at the center position on the right side of the fixed seat, a resist strip is fixed to the output end of the electric push rod, and a rubber strip is pasted on the side of the resist strip that contacts the pipe.

[0013] As a preferred technical solution of a feeding clamping mechanism for a pipe bending machine of the utility model, the arc diameters opened on the outer walls of the four groups of constraint seats are different, and the four groups of constraint seats are respectively located on the upper and lower front and rear surfaces of the base.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] The utility model can rotate the base according to the size of the pipe through the setting of the clamp component, so that the constraint seat suitable for the pipe is in a vertically symmetrical state, and then the two groups of constraint seats are relatively close to each other by the rotation of the bidirectional screw rod, and finally the purpose of positioning and clamping the pipe is completed, so that the device is not limited to the size range of one pipe, and the application scope of the device is improved in disguise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This is a side structural diagram of the fixing seat of the utility model;

[0018] Figure 3 This is a structural diagram of the clamp assembly and bidirectional screw rod of the utility model;

[0019] Figure 4 A side cutaway view of the fixing of the utility model is provided;

[0020] Figure 5 This is a cutaway structural diagram of the connecting arm and the base of the utility model;

[0021] Figure 6 It is a side cutaway view of the connecting arm of the present utility model.

[0022] In the figure: 100, fixed seat; 200, clamp assembly;

[0023] 110, side plate; 120, motor; 130, travel slot; 140, bidirectional screw rod; 150, driven sleeve; 160, electric push rod; 170, stop bar;

[0024] 210, base; 220, constraint seat; 230, adjustment plate; 240, connecting arm; 241, blind hole; 242, square groove; 243, large diameter circular groove; 250, connecting rod; 251, square bar; 252, constraint rod; 253, spring. DETAILED DESCRIPTION

[0025] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0026] The following describes an embodiment of the utility model based on its overall structure.

[0027] A feeding and clamping mechanism for a pipe bending machine, such as Figures 1 to 6 As shown, it includes a fixed seat 100, a side plate 110 is fixed at the right side near the upper and lower edges of the fixed seat 100, and two groups of travel grooves 130 are opened on the right outer wall of the fixed seat 100. A bidirectional screw rod 140 is rotatably arranged in each group of travel grooves 130, and a pair of driven sleeves 150 are threadedly sleeved on the outer wall of each group of bidirectional screw rods 140. The outer wall of the driven sleeve 150 is provided with a clamp assembly 200 extending to the outside of the fixed seat 100;

[0028] The clamp assembly 200 includes a connecting arm 240 fixed to the side wall of the driven sleeve 150, a base 210 is provided at one end of the connecting arm 240 away from the driven sleeve 150, four groups of constraint seats 220 are fixed to the outer wall of the base 210, a blind hole 241 is provided at one end of the connecting arm 240 close to the base 210, a connecting rod 250 in the blind hole 241 is slidably provided in the base 210, a square bar 251 is provided at one end of the connecting rod 250 located in the blind hole 241, a constraint rod 252 is fixed at one end of the square bar 251 away from the connecting rod 250, a large diameter circular groove 243 is provided at the middle position of the blind hole 241, and a square groove 242 is provided on the inner wall of the large diameter circular groove 243 away from the connecting rod 250;

[0029] One end of the connecting rod 250 away from the connecting arm 240 extends to the outside of the base 210, and a matching channel is provided in the base 210 at the contact position with the connecting rod 250, and an adjustment disk 230 is fixed to the end of the connecting rod 250;

[0030] The outer wall of the constraint rod 252 is sleeved with a spring 253, and both ends of the spring 253 are sleeved with constraint rings. The constraint ring near the left end of the constraint rod 252 is fixedly connected to the constraint rod 252 and the spring 253, and the constraint ring near the right end of the spring 253 is fixed to the inner wall of the blind hole 241.

[0031] The pipe is placed on the right side of the fixing seat 100 and between the upper and lower clamp assemblies 200. The output end of the motor 120 rotates to make the bidirectional screw rod 140 rotate synchronously. Under the action of the threads on its outer wall, the two sets of connecting arms 240 slide relatively close to each other along the travel groove 130 until the restraining seat 220 contacts the pipe. At the same time, the telescopic end of the electric push rod 160 is controlled to extend until the stop bar 170 contacts the pipe again, ensuring that the clamped pipe is more stable.

[0032] When the size of the pipe is changed, the adjusting disk 230 is first held and applied with a horizontal external force to the side away from the fixing seat 100, so that it drives the connecting rod 250 to move horizontally, and the square bar 251 connected at the end moves synchronously until the end extends out of the square groove 242, and the other end of the square bar 251 fits with the large diameter circular groove 243 and cannot continue to move horizontally. At the same time, the restraining rod 252 moves with it and compresses the spring 253. The adjusting disk 230 is manually applied with a rotating external force and rotated to a 90-degree position to meet the size of the pipe, so that the required restraining seat 220 is rotated to a position in contact with the pipe, and then the horizontal horizontal force applied to the adjusting disk 230 is removed, and the spring 253 releases the pressure to restore the restraining rod 252, and the square bar 251 at its end is inserted into the square groove 242, so that the adjusted base 210 will not rotate, ensuring the stable clamping of the pipe;

[0033] The device is not limited to the size range of a pipe, which in turn improves the application range of the device.

[0034] Please refer to Figure 1 , Figure 2 and Figure 4 A motor 120 is installed at the top of the fixed seat 100, and the output end of the motor 120 is connected to the end of one set of bidirectional screw rods 140 through a coupling;

[0035] The outer walls of the bottom ends of the two sets of bidirectional screw rods 140 are sleeved with transmission belts, and pulleys are provided at the positions where the outer walls of the bidirectional screw rods 140 contact the transmission belts.

[0036] The external power supply provides electric energy to the motor 120, and the output end drives a set of bidirectional screw rods 140 to rotate, and the other set on the left and right of the transmission belt rotates synchronously, so that the clamp assembly 200 is relatively close to complete the clamping purpose of the pipe;

[0037] The setting of the pulley prevents the belt from slipping, ensuring that the clamping of the pipe is more efficient and convenient.

[0038] Please refer to Figure 1 , Figure 2 and Figure 4 An electric push rod 160 is embedded at the center position on the right side of the fixing seat 100, and a resistance strip 170 is fixed to the output end of the electric push rod 160. A rubber strip is pasted on the side of the resistance strip 170 that contacts the pipe.

[0039] The telescopic end of the electric push rod 160 extends to push the stop bar 170 to contact the pipe, further improving the effect of clamping the pipe stably, and utilizing the rubber strip to provide elastic protection to prevent scratches on the pipe.

[0040] Please refer to Figure 2 and Figure 3 The arc diameters formed on the outer walls of the four groups of constraint seats 220 are different, and the four groups of constraint seats 220 are respectively located on the upper, lower, front and rear surfaces of the base 210 .

[0041] The four sets of restraint seats 220 can meet the clamping requirements of various pipes, thereby better assisting the pipe bending machine in its work.

[0042] When in use, the parts not involved in the device are the same as those in the prior art or can be implemented using the prior art.

[0043] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A feeding and clamping mechanism for a pipe bending machine, comprising a fixing seat (100), characterized in that: A side plate (110) is fixed on the right side of the fixing seat near the upper and lower edges, and two groups of travel grooves (130) are opened on the right outer wall of the fixing seat (100), and a bidirectional screw rod (140) is rotatably arranged in each group of the travel grooves (130), and a pair of driven sleeves (150) are threadedly sleeved on the outer wall of each group of the bidirectional screw rods (140), and a clamp assembly (200) extending to the outside of the fixing seat (100) is arranged on the outer wall of the driven sleeve (150); The clamp assembly (200) includes a connecting arm (240) fixed to the side wall of the driven sleeve (150), a base (210) is provided at one end of the connecting arm (240) away from the driven sleeve (150), four groups of constraint seats (220) are fixed to the outer wall of the base (210), a blind hole (241) is provided at one end of the connecting arm (240) close to the base (210), and a blind hole (241) is provided in the base (210) for sliding. A connecting rod (250) is provided in a blind hole (241), one end of the connecting rod (250) is provided with a square bar (251) in the blind hole (241), a restraining rod (252) is fixed to one end of the square bar (251) away from the connecting rod (250), a large diameter circular groove (243) is provided at the middle position of the blind hole (241), and a square groove (242) is provided on the inner wall of the large diameter circular groove (243) away from the connecting rod (250).

2. A feeding and clamping mechanism for a pipe bending machine according to claim 1, characterized in that: One end of the connecting rod (250) away from the connecting arm (240) extends outside the base (210), a matching channel is provided in the base (210) at a position in contact with the connecting rod (250), and an adjustment disk (230) is fixed to the end of the connecting rod (250).

3. The feeding and clamping mechanism for a pipe bending machine according to claim 1, characterized in that: The outer wall of the constraint rod (252) is sleeved with a spring (253), and both ends of the spring (253) are sleeved with constraint rings, the constraint ring near the left end of the constraint rod (252) is fixedly connected to the constraint rod (252) and the spring (253), and the constraint ring near the right end of the spring (253) is fixed to the inner wall of the blind hole (241).

4. The feeding and clamping mechanism for a pipe bending machine according to claim 1, characterized in that: A motor (120) is installed at the top end of the fixing seat (100), and an output end of the motor (120) is connected to the end of one set of bidirectional screw rods (140).

5. The feeding and clamping mechanism for a pipe bending machine according to claim 1, characterized in that: The outer walls of the bottom ends of the two groups of bidirectional screw rods (140) are sleeved with transmission belts, and pulleys are provided at the positions where the outer walls of the bidirectional screw rods (140) contact the transmission belts.

6. The feeding and clamping mechanism for a pipe bending machine according to claim 1, characterized in that: An electric push rod (160) is embedded at the center position on the right side of the fixing seat (100), a resistance strip (170) is fixed to the output end of the electric push rod (160), and a rubber strip is pasted on the side of the resistance strip (170) that contacts the pipe.

7. The feeding and clamping mechanism for a pipe bending machine according to claim 1, characterized in that: The arc diameters formed on the outer walls of the four groups of constraint seats (220) are different, and the four groups of constraint seats (220) are respectively located on the upper and lower front and rear surfaces of the base (210).

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