Pipe clamp blanking groove

Abstract

The utility model discloses a pipe clamp discharging groove which comprises a sliding groove, a transferring groove and a transferring driving assembly. The sliding groove and the transferring groove are sequentially arranged and form a discharging channel. The sliding groove has inclination, the low-position end of the sliding groove directly faces the transfer groove, and a notch is formed in the bottom face of a groove body of the transfer groove. The transfer driving assembly comprises driving equipment and a transfer part arranged on the driving equipment; and the transfer piece is driven by the driving equipment, and the transfer piece penetrates through the notch after being driven. The transfer piece is arranged to transfer the pipe clamps to an assembly line and other areas, the mode that in the prior art, the pipe clamps slide into a material receiving groove through gravity sliding is changed, the pipe clamps are transferred to a target area one by one through the transfer assembly, and quality detection can be carried out on the manufactured and formed pipe clamps more conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe clamp blanking, and particularly relates to a pipe clamp blanking trough. Background Art

[0002] At present, pipe clamps are mostly produced by stamping machines. After the stamping production is completed, reconfirmation of product quality is an indispensable link. The quality inspection link can promptly detect and eliminate unqualified products to ensure that the pipe clamps finally shipped meet the quality standards.

[0003] In the current conventional quality inspection method, a collection box is generally placed under the feed chute of the punching machine to collect the produced pipe clamps. When a certain number of pipe clamps are collected, workers will check them one by one. This method is inefficient. Workers need to pick up the pipe clamps one by one, carefully observe their appearance, size, etc., to determine whether they are qualified. This process is not only time-consuming and labor-intensive, but also prone to misjudgment or missed inspections due to human factors (such as fatigue, negligence, etc.). Utility Model Content

[0004] As mentioned above, how to change the way of quality control of pipe clamps to improve efficiency is the technical problem to be solved by the utility model. To this end, the utility model discloses a pipe clamp feeding trough, including a sliding trough and a transfer trough which are sequentially arranged to form a feeding channel, and a transfer drive assembly; the sliding trough has an inclination, the lower end of the sliding trough is directly opposite to the transfer trough, and the bottom surface of the trough of the transfer trough has a notch; the transfer drive assembly includes a driving device and a transfer member arranged on the driving device; the transfer member is driven by the driving device, and the transfer member passes through the notch after being driven.

[0005] In some exemplary technical solutions, the transfer member is located below the notch in a first state, and the transfer member passes through the notch and is located above the notch in a second state; wherein, in the first state, the tube clamp slides to above the notch through the feed channel; in the second state, the tube clamp is placed on the transfer member; the device repeatedly switches between the first state and the second state.

[0006] In some exemplary technical solutions, it also includes a first transfer track and a second transfer track that are arranged opposite to each other at the end of the transfer groove, the first transfer track and the second transfer track are arranged in parallel, and a spacing space is left between the first transfer track and the second transfer track to allow the transfer member to pass through; wherein the transfer member passes through the spacing space from top to bottom.

[0007] In some exemplary technical solutions, a detection member is further provided at the connection position between the sliding groove and the transfer groove.

[0008] In some exemplary technical solutions, a positioning block is further provided at the high end of the sliding groove, and the positioning block is arranged in the central area of ​​the high end.

[0009] In some exemplary technical solutions, the driving device has an output shaft, and the transfer member is connected to the output shaft through a transmission assembly; wherein the transmission assembly includes: a crank part, one end of which is fixedly connected to the output shaft; a connecting rod part, one end of which is fixed to the crank part, and the other end is fixed to the transfer member; the driving device is also provided with a limiting track, the connecting rod part extends out of a limiting part, and the limiting part is passed through the limiting track.

[0010] In some exemplary technical solutions, the transfer member has magnetic force.

[0011] In some exemplary technical schemes, the sliding trough includes a first left trough body and a first right trough body, the transfer trough includes a second left trough body and a second right trough body, the first left trough body is connected to the second left trough body, and the first right trough body is connected to the second right trough body; the notch is the spacing area between the second left trough body and the second right trough body; a contraction part is arranged between the integral structure formed by the first left trough body and the second left trough body and the integral structure formed by the first right trough body and the second right trough body.

[0012] In some exemplary technical solutions, the first left trough body, the first right trough body, the second left trough body, and the second right trough body are all provided with arc-shaped grooves, and the arc-shaped grooves are arranged along the pipe clamp transportation direction of the feeding channel.

[0013] The beneficial effect of the utility model is that the transfer member is provided to transfer the pipe clamp to the production line and other areas, which changes the existing method of sliding the pipe clamp into the receiving trough by relying on gravity. The pipe clamps are transferred one by one to the target area through the transfer assembly, which is more convenient for quality inspection of the manufactured pipe clamps. In addition, in order to ensure that the pipe clamp maintains the correct posture during the transfer process of the transfer member, an arc groove and a protrusion matching the pipe clamp structure are also provided to ensure the process of transferring one or several pipe clamps at a time.

[0014] Furthermore, in some cases, a transfer track is provided to transfer the pipe clamps to the assembly line, and in some cases, the transfer track can be directly connected to the assembly line.

[0015] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A pipe clamp feeding trough according to an embodiment of the utility model is shown;

[0018] Figure 2 A pipe clamp feeding trough according to an embodiment of the utility model is shown;

[0019] Figure 3 A pipe clamp feeding trough according to an embodiment of the utility model is shown;

[0020] Figure 4 A pipe clamp feeding trough according to an embodiment of the utility model is shown;

[0021] Figure 5 A pipe clamp feeding trough according to an embodiment of the utility model is shown;

[0022] Figure 6 A pipe clamp feeding trough according to an embodiment of the utility model is shown;

[0023] Figure 7 A pipe clamp feeding chute according to an embodiment of the utility model is shown.

[0024] In the attached figure:

[0025] 1-sliding trough, 2-transfer trough, 3-transfer drive assembly, 5-detection component, 6-arc trough, 7-tube clamp, 8-press feed trough;

[0026] 101-notch, 102-positioning block, 103-first left slot body, 104-first right slot body;

[0027] 201-second left tank body, 202-second right tank body, 203-retracting member;

[0028] 301-driving device, 302-transfer member, 303-output shaft, 304-transmission assembly;

[0029] 3041-crank portion, 3042-connecting rod portion, 3043-first limiting rail, 3044-second limiting rail, 3045-limiting portion;

[0030] 401 - first transfer track, 402 - second transfer track, 403 - interval space. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0032] First embodiment

[0033] In this embodiment, the method of quality control of the pipe clamp 7 is changed to improve efficiency. Figure 1-7 This example discloses a device for unloading a pipe clamp 7, comprising a sliding groove 1 and a transfer groove 2 which are sequentially arranged to form an unloading channel, and a transfer drive assembly 3. The sliding groove 1 has an inclination, and the lower end of the sliding groove 1 is directly opposite to the transfer groove 2, and the bottom surface of the groove body of the transfer groove 2 has a notch 101. The transfer drive assembly 3 includes a driving device 301 and a transfer member 302 arranged on the driving device 301; the transfer member 302 is driven by the driving device 301, and the transfer member 302 passes through the notch 101 after being driven; wherein, the transfer member 302 passes through the notch 101 from bottom to top.

[0034] The device in this example realizes automatic unloading and transfer of the tube clamp 7 by sequentially setting the sliding groove 1 and the transfer groove 2, and the transfer drive assembly 3. The design of the sliding groove 1 enables the tube clamp 7 to automatically slide to the transfer groove 2 by gravity, and the transfer drive assembly 3 can automatically transfer the tube clamp 7 from the transfer groove 2, thereby realizing the automatic unloading process of the tube clamps 7 one by one.

[0035] The device in this example improves production efficiency, reduces the complexity and time cost of manual operations, and also reduces errors and product quality issues caused by human factors.

[0036] Second embodiment

[0037] Based on the above embodiments, based on reference Figure 1-2 Understand this example. In this example, the transfer member 302 transfers the tube clamps 7 one by one, thereby achieving precise control and efficient transfer of the tube clamps 7. Specifically, when the tube clamps 7 slide from the sliding slot 1 to the transfer slot 2, the transfer drive assembly 3 drives the transfer member 302 to pass through the notch 101 on the bottom surface of the transfer slot 2, and lifts and transfers the tube clamps 7 from the transfer slot 2 one by one. By transferring one by one, each tube clamp 7 can be individually inspected and screened, thereby improving the efficiency of quality inspection.

[0038] In this example, the transfer member 302 lifts the pipe clamp 7 from bottom to top. Specifically, when the transfer member 302 is driven by the driving device 301 to pass through the notch 101, it can contact the pipe clamp 7 from below and lift it up.

[0039] For better description, in this example, the transfer member 302 is located below the notch 101 as the first state, and the transfer member 302 passes through the notch 101 and is located above the notch 101 as the second state. Figure 1 To understand, the second state reference Figure 2 To understand.

[0040] In the first state, the tube clamp 7 slides to above the notch 101 via the unloading channel. The specific situation may be different in different embodiments. In one example, the tube clamp 7 has successfully slid from the sliding groove 1 to the transfer groove 2, and is waiting to be lifted up and transferred by the transfer part 302. In this case, the tube clamp 7 is already above the notch 101 of the transfer groove 2, ready for the next transfer operation. In another example, the tube clamp 7 may also be about to slide into the transfer groove 2, but has not yet arrived completely. This means that the tube clamp 7 may be in the transition area between the sliding groove 1 and the transfer groove 2, or is about to enter the transfer groove 2. In either case, the first state represents that the tube clamp 7 has entered the next key link in the unloading process and is ready to be transferred by the transfer part 302 for the next operation. This state provides the necessary preparation and conditions for the subsequent transfer and quality inspection of the tube clamp 7.

[0041] The movement of the transfer member 302 and the sliding of the tube clamp 7 are closely matched and coordinated with each other. When the tube clamp 7 slides from the sliding groove 1 to the transfer groove 2, the transfer member 302 will start to move at the right time to ensure that the tube clamp 7 that has slid into the transfer groove 2 can be accurately lifted and transferred. This kind of cooperation requires not only precise docking in time, but also precise matching in spatial position.

[0042] In a specific example, the punching machine continuously punches the tube clamp 7, and each completed punching of the tube clamp 7 triggers a signal. This signal is transmitted to an external host computer, such as a high-performance industrial control computer or PLC (programmable logic controller).

[0043] The host computer, as a central control system, will accurately calculate the time when the transfer member 302 needs to start moving after receiving the signal of stamping completion, so as to ensure coordination with the stamping frequency of the stamping machine. Through the precise control algorithm, the host computer can ensure that at the moment after each stamping is completed, the drive device 301 will activate the transfer member 302, so that it passes through the notch 101 of the transfer trough 2, and accurately lifts and transfers one or more pipe clamps 7.

[0044] For example, if the punching machine can produce one tube clamp 7 per punching and completes one punching every 5 seconds, then the upper machine will wait for a short and precise time difference after receiving the signal of punching completion each time, and then control the drive device 301 to activate the transfer member 302 to ensure that only one tube clamp 7 is delivered each time.

[0045] Regarding the specific example of the host computer, it is possible to consider using a PCB (printed circuit board) board as part of the control system. Various electronic components and microprocessors can be integrated on the PCB board to receive signals, process data, and control the actions of various devices. In this example, the PCB board can receive signals from the punching machine, and calculate the action timing of the transfer member 302 through the internal logic circuit or microprocessor, and then control the drive device 301 and the punching machine through the output interface.

[0046] Furthermore, in order to improve the integration and automation level of the production line, the host computer can be an integrated control device to simultaneously control the punching machine and the driving device 301. Of course, other equivalent methods are also possible.

[0047] In the second state, that is, when the transfer member 302 passes through the notch 101 and is located above the notch 101, the tube clamp 7 is placed on the transfer member 302. At this time, the transfer member 302 begins to move from bottom to top, and this movement process is to lift the tube clamp 7 from the transfer trough 2 and transfer it to the next station or storage area. When the transfer member 302 begins to move upward, it first contacts the tube clamp 7 located in the transfer trough 2. Since the shape and design of the transfer member 302 match the bottom of the tube clamp 7, it can stably hold up the tube clamp 7. As the transfer member 302 continues to rise, the tube clamp 7 is gradually lifted up and detached from the transfer trough 2.

[0048] In this process, the transfer member 302 ensures the stability and position accuracy of the tube clamp 7 through the friction or adsorption between its surface and the bottom of the tube clamp 7. In some examples, the transfer member 302 is a magnet. When the tube clamp 7 is completely lifted up and separated from the transfer trough 2, the transfer member 302 will continue to rise and transport the tube clamp 7 to a specified height or position.

[0049] It is not difficult to understand that the driving device 301 drives the transfer member 302 to switch repeatedly between the first state and the second state. When the transfer member 302 passes through the notch 101 and is located above the notch 101, the tube clamp 7 is stably placed on the transfer member 302. Through the bottom-up movement of the transfer member 302, the tube clamps 7 are lifted up from the transfer trough 2 one by one or in a certain number and transferred to the next station or storage area. This switching mechanism can realize the precise transportation of the tube clamps 7 one by one or in several, avoiding the situation in the prior art that the tube clamps 7 are piled up in the box. By repeatedly switching the driving device 301 between the first state and the second state, the number of tube clamps 7 transferred each time can be accurately controlled. This one-by-one or quantity-based transportation method not only improves production efficiency, but also ensures that each tube clamp 7 can be individually processed and quality inspected. In some cases, this switching mechanism can also transport the tube clamps 7 directly to the assembly line, thereby further facilitating the quality inspection operation.

[0050] Third embodiment

[0051] Based on the above-mentioned embodiment, in this example, the device for clamping and unloading pipes further includes a first transfer track 401 and a second transfer track 402 arranged opposite to the end of the transfer trough 2. Figure 3 It is understood that in some cases, if the tube clamp 7 that slides to the transfer member 302 is directly placed on the assembly line, since the direction of the assembly line is different from the direction of the feeding channel, it will be difficult to put the tube clamp 7 directly on the assembly line due to resistance.

[0052] In this example, the first transfer track 401 and the second transfer track 402 are arranged in parallel, and a spacing space 403 is left between the first transfer track 401 and the second transfer track 402 to allow the transfer member 302 to pass through. In some specific examples, the first transfer track 401 and the second transfer track 402 can be in the form of a conveyor belt. As a common material transfer equipment, the conveyor belt has the advantages of smooth operation and high reliability. In this example, when the pipe clamp 7 is lifted up by the transfer member 302 and transported to the end of the transfer trough 2, it can be smoothly placed on the first transfer track 401 and the second transfer track 402.

[0053] In addition, in some other examples, the conveyor belt can be designed to have a certain curvature. This curvature design allows the conveyor belt to smoothly transition from the direction of the feeding channel to the direction of the assembly line, thereby reducing the resistance that the tube clamp 7 may encounter during the transportation process. In this way, the tube clamp 7 can be more smoothly transferred from the feeding channel to the assembly line, improving production efficiency and reducing the risk of loss during transportation. In some exemplary embodiments,

[0054] As mentioned above, a spacing space 403 is provided between the first transfer track 401 and the second transfer track 402. Specifically, the transfer member 302 passes through the spacing space 403 from top to bottom. In this example, due to the rotation of the rotating member, the tube clamp 7 can be placed on the conveyor belt completely and stably, solving the problem of difficulty in conveying the tube clamp 7 sliding in the feed chute 8 to the assembly line.

[0055] Fourth embodiment

[0056] Based on the above embodiments, in this example, reference may be made to Figure 1-3 It is understood that a detection member 5 is also provided at the connection position between the sliding groove 1 and the transfer groove 2. The detection member 5 can be a high-precision detection device such as a high-precision photoelectric sensor, an infrared sensor or a laser rangefinder, which can quickly and accurately detect the width of the pipe clamp 7 and obtain key dimensions such as the width of the pipe clamp 7.

[0057] In some examples, the detection member 5 includes a first detection member 5 and a second detection member 5 disposed on both sides of the connecting position of the sliding slot 1 and the transfer slot 2. The two detection members 5 are respectively located on both sides of the tube clamp 7, and are used to detect the width of the tube clamp 7 from left to right. In this way, the width data of the tube clamp 7 can be fully and accurately grasped, providing an important basis for the subsequent quality inspection link.

[0058] As mentioned above, since the pipe clamp 7 is formed by stamping, insufficient stamping or over-stamping will lead to errors in the overall width of the pipe clamp 7. Therefore, the first detection member 5 and the second detection member 5 can accurately detect the width of the pipe clamp 7 to achieve a preliminary quality inspection function. Once an abnormal width is found, it can be determined that the pipe clamp 7 may have quality problems, so that further processing can be performed.

[0059] In some specific examples, the detection member 5 can be connected to the host computer in the aforementioned embodiment. When the width of the pipe clamp 7 is abnormal or other quality problems are detected, the detection member 5 will promptly feed back the abnormal situation to the host computer through signal transmission. After receiving the abnormal signal, the host computer can automatically control the production line to stop running to avoid the pipe clamp 7 with quality problems from continuing to flow to the subsequent links, thereby ensuring the quality and safety of the entire production process.

[0060] Fifth embodiment

[0061] Based on the above embodiments, this example can further refer to Figure 4-5 It is understood that the driving device 301 has an output shaft 303, and the transfer member 302 is connected to the output shaft 303 via a transmission assembly 304. The driving device 301 can be a motor or other mechanism. Figure 5As shown, the transmission assembly 304 includes a crank portion 3041 with one end fixedly connected to the output shaft 303 and the other end connected to a connecting rod portion 3042, and one end of the crank portion 3041 connected to the connecting rod is a bearing structure.

[0062] The other end of the connecting rod 3042 is fixed to the transfer member 302. Figure 5 As shown, the driving device 301 is further provided with a limiting track, which in the example shown in the figure includes a first limiting track 3043 in the X direction and a second limiting track 3044 in the Y direction. The connecting rod portion 3042 extends out a limiting portion 3045, and the limiting portion 3045 is inserted into the limiting track.

[0063] The limiting track plays an important role in guiding the movement of the connecting rod 3042. The limiting track limits the movement trajectory of the limiting part 3045 of the connecting rod 3042, thereby ensuring that the transfer member 302 can move accurately along the predetermined path. Through the combined action of the limiting tracks in the X direction and the Y direction, the movement of the connecting rod 3042 is strictly limited within a two-dimensional plane, which makes the movement of the transfer member 302 more accurate and controllable.

[0064] In some specific examples, the transfer member 302 has magnetic force, and the transfer member 302 can be a rectangular block, which is a planar segment of the magnetic suction tube clamp 7 .

[0065] Sixth embodiment

[0066] Based on the above embodiments, reference Figure 1-5 It is understood that the sliding trough 1 includes a first left trough body 103 and a first right trough body 104, and the transfer trough 2 includes a second left trough body 201 and a second right trough body 202, the first left trough body 103 is connected to the second left trough body 201, and the first right trough body 104 is connected to the second right trough body 202.

[0067] The notch 101 is the spacing area between the second left trough body 201 and the second right trough body 202 , and a contraction piece 203 is provided between the integral structure formed by the first left trough body 103 and the second left trough body 201 and the integral structure formed by the first right trough body 104 and the second right trough body 202 .

[0068] In this example, the shrinking member 203 is a shrinking rod, and the shrinking rod can change the width of the notch 101 by shrinking and adjusting, so as to match clamps of different specifications.

[0069] The first left tank body 103, the first right tank body 104, the second left tank body 201, and the second right tank body 202 are all provided with arc grooves 6. Figure 6As shown, the arc groove 6 is arranged along the transport direction of the pipe clamp 7 of the feeding channel. Among them, the two transfer rails match the special structure of the pipe clamp 7, that is, the pipe clamp 7 includes two arc parts, which can guide the posture of the pipe clamp 7 during the sliding process after matching.

[0070] refer to Figure 7 In the state shown, the high end of the sliding groove 1 is further provided with a positioning block 102, and the positioning block 102 is arranged in the central area of ​​the high end. The structure of the positioning block 102 is consistent with the structure of the plane section of the pipe clamp 7, so the positioning block 102 can adjust the pipe clamp 7 to match the posture of the arc groove 6 when the pipe clamp 7 initially enters the sliding groove 1.

[0071] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipe clamp feeding trough, characterized in that: It comprises a sliding trough (1) and a transfer trough (2) which are arranged in sequence to form a material discharge channel, and a transfer drive component (3); The sliding groove (1) has an inclination, the lower end of the sliding groove (1) is directly opposite to the transfer groove (2), and the bottom surface of the groove body of the transfer groove (2) has a notch (101); The transport drive assembly (3) comprises a drive device (301) and a transfer member (302) arranged on the drive device (301); the transfer member (302) is driven by the drive device (301), and the transfer member (302) passes through the gap (101) after being driven.

2. The pipe clamp feeding trough according to claim 1, characterized in that: The transfer member (302) is located below the notch (101) in a first state, and the transfer member (302) passes through the notch (101) and is located above the notch (101) in a second state; Wherein, in the first state, the tube clamp (7) slides to above the notch (101) via the material discharge channel; in the second state, the tube clamp (7) is placed on the transfer member (302); The transfer element (302) switches between a first state and a second state.

3. The pipe clamp feeding trough according to claim 1, characterized in that: The device further comprises a first transfer track (401) and a second transfer track (402), the first transfer track (401) and the second transfer track (402) are both arranged opposite to the end of the transfer slot (2), the first transfer track (401) and the second transfer track (402) are arranged in parallel, and a spacing space (403) for the transfer member (302) to pass through is arranged between the first transfer track (401) and the second transfer track (402); Wherein, the transfer member (302) passes through the spacing space (403) from top to bottom.

4. The pipe clamp feeding trough according to claim 1, characterized in that: A detection member (5) is also provided at the connection position between the sliding groove (1) and the transfer groove (2).

5. The pipe clamp feeding trough according to claim 1, characterized in that: The high end of the sliding groove (1) is also provided with a positioning block (102), and the positioning block (102) is arranged in the central area of ​​the high end.

6. The pipe clamp feeding trough according to claim 1, characterized in that: The driving device (301) has an output shaft (303), and the transfer member (302) is connected to the output shaft (303) via a transmission assembly (304); Wherein, the transmission assembly (304) comprises: A crank portion (3041), one end of the crank portion (3041) being fixedly connected to the output shaft (303); A connecting rod portion (3042), one end of the connecting rod portion (3042) is fixed to the crank portion (3041), and the other end is fixed to the transfer member (302); The driving device (301) is further provided with a limiting track, and the connecting rod portion (3042) extends out of a limiting portion, and the limiting portion is inserted into the limiting track.

7. The pipe clamp feeding trough according to any one of claims 1 to 6, characterized in that: The transfer element (302) has magnetic force.

8. The pipe clamp feed trough according to any one of claims 1 to 6, characterized in that: The sliding trough (1) comprises a first left trough body (103) and a first right trough body (104); the transfer trough (2) comprises a second left trough body (201) and a second right trough body (202); the first left trough body (103) is connected to the second left trough body (201), and the first right trough body (104) is connected to the second right trough body (202); The notch (101) is a spacing area between the second left tank body (201) and the second right tank body (202); A contraction piece (203) is provided between the integral structure formed by the first left trough body (103) and the second left trough body (201) and the integral structure formed by the first right trough body (104) and the second right trough body (202).

9. The pipe clamp feeding trough according to claim 8, characterized in that: The first left trough body (103), the first right trough body (104), the second left trough body (201), and the second right trough body (202) are all provided with an arc-shaped groove (6), and the arc-shaped groove (6) is arranged along the transportation direction of the pipe clamp (7) of the feeding channel.

Images