Terminal array needle cutting device
By designing a terminal pin cutting device with detachable cutting tools, the problem of insufficient flexibility of existing equipment is solved, enabling flexible adaptation and efficient cutting for different cutting scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 深圳市一九四三科技有限公司
- Filing Date
- 2025-08-14
- Publication Date
- 2026-08-04
AI Technical Summary
Existing terminal block pin cutting equipment lacks flexibility and cannot adapt to specific pin cutting needs, thus limiting its application scenarios.
A terminal pin cutting device was designed, including a frame, a limiting mechanism and a cutting mechanism. The device uses detachable cutters arranged on a sliding seat, combined with a limiting mechanism and a feeding track, to achieve flexible cutting of terminal pins.
It improves adaptability to different cutting scenarios, enhances cutting efficiency and quality, adapts to different cutting requirements, and enables flexible cutting of terminal pins.
Smart Images
Figure CN224596010U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of terminal processing equipment technology, and in particular to a terminal pin cutting device. Background Technology
[0002] In related technologies, terminals typically have multiple pin headers. When using them, considering factors such as component installation and connection requirements, some of the pin headers of the terminal need to be cut off. Existing equipment is mostly used for batch cutting of terminal pin headers, which cannot adapt to the cutting of specific pin headers. The lack of flexibility limits the application scenarios. Utility Model Content
[0003] The main purpose of this invention is to provide a terminal pin cutting device, which aims to improve the adaptability to different cutting scenarios of terminal pins.
[0004] To achieve the above objectives, the present invention proposes a terminal pin cutting device. The terminal includes a main body and a plurality of pins disposed on one side of the main body. The plurality of pins are arranged at intervals along the length direction of the main body. The terminal pin cutting device includes:
[0005] A frame is provided with a feeding track, and the feeding track is provided with a receiving groove arranged along a first direction. The receiving groove is used to place the body of the terminal so that the pin header extends out of the receiving groove.
[0006] A limiting mechanism is provided on the frame and along the second direction on one side of the feeding track. The limiting mechanism includes a first driving member and an abutting member drivenly connected to the first driving member. The abutting member has an abutting plane on the side away from the first driving member. The abutting plane is used to abut against a plurality of pins of the terminal. The first direction and the second direction form an angle.
[0007] A cutting mechanism is provided on the frame and located on the side of the feeding track away from the limiting mechanism. The cutting mechanism includes a second driving member, a sliding seat, and a plurality of cutters. The sliding seat is drivenly connected to the second driving member. The plurality of cutters are arranged on the sliding seat along the first direction. Any cutter is detachably connected to the sliding seat. The second driving member is used to drive the sliding seat to move towards the abutment member so that the cutter cuts the pins of the terminal.
[0008] In one embodiment, the cutting mechanism further includes a locking member, and the sliding seat is provided with a plurality of mounting slots extending along the second direction. The cutting tool is disposed in the mounting slot and is detachably connected to the sliding seat through the locking member.
[0009] In one embodiment, the locking member includes a screw, the cutting tool is provided with a mating hole, and the bottom wall of the mounting groove is provided with a plurality of screw holes spaced apart along the second direction. The screw is used to pass through the mating hole and be provided in different screw holes to adjust the position of the cutting tool on the sliding seat.
[0010] In one embodiment, the cutting mechanism further includes a mounting plate and a guide rail disposed on the mounting plate. The mounting plate is disposed on the frame, the guide rail extends along the second direction, and the sliding seat is slidably disposed on the guide rail and connected to the second driving member.
[0011] In one embodiment, a movable gap is formed between the feeding track and the frame, the bottom wall of the receiving groove is provided with a through hole communicating with the movable gap, the pins extend from the through hole to the movable gap, and the abutment and the sliding seat are used to enter the movable gap to cut off the pins.
[0012] In one embodiment, the width of the through hole is smaller than the width of the main body, and the through hole is provided to extend through the length of the feeding track;
[0013] And / or, the frame is provided with a material discharge hole, the material discharge hole is located below the through hole and communicates with the movable gap, and a waste collection box is provided below the material discharge hole.
[0014] In one embodiment, the terminal pin cutting device includes a conveying mechanism disposed at one end of the feeding track. The conveying mechanism includes a third driving member and a push rod drivenly connected to the third driving member. The push rod pushes the terminals on the feeding track along the first direction.
[0015] In one embodiment, the terminal pin cutting device includes a feeding platform disposed between the feeding track and the third driving member. The feeding platform is provided with a limiting groove along the first direction, and the limiting groove communicates with the receiving groove for inserting the terminal pins.
[0016] In one embodiment, the terminal pin cutting device further includes a sensor and a clamping assembly. The sensor is mounted on the frame for detecting the pins of the terminal. The clamping assembly includes a driver and a pressure rod driven and connected to the driver. The driver is located above the feed rail and electrically connected to the sensor. The driver is used to receive the signal from the sensor and drive the pressure rod to move downward to abut the terminal against the feed rail.
[0017] In one embodiment, two clamping components are spaced apart on the feeding track, and any one of the drivers is movably disposed on the feeding track to adjust the distance between the two clamping rods.
[0018] The terminal pin cutting device proposed in this utility model includes a frame, a limiting mechanism, and a cutting mechanism. The frame is provided with a feeding track, and the feeding track is provided with a receiving groove arranged along a first direction. The receiving groove is used to place the terminal so that the pins of the terminal extend out of the receiving groove. The limiting mechanism is provided on the frame and is arranged on one side of the feeding track along a second direction. The first direction and the second direction form an angle. The cutting mechanism is located on the other side of the feeding track. The limiting mechanism includes a first driving member and an abutting member. The abutting member has an abutting surface for abutting against multiple pins of the terminal. The cutting mechanism includes a second driving member, a sliding seat, and multiple cutters. The sliding seat is drivenly connected to the second driving member. Multiple cutters are arranged on the sliding seat along the first direction, and any cutter is detachably connected to the sliding seat. The second driving member is used to drive the sliding seat to move towards the abutting member so that the cutter cuts the pins of the terminal. With this configuration, the cutters on the sliding seat can be arranged in any way. Multiple cutters can be arranged side by side on the sliding seat to cut off the entire row of pins of the terminal. If some of the cutters are disassembled to create gaps between them, the pins in the corresponding gaps will be retained when the cutting operation is performed. In this way, the terminal pin cutting device can assemble cutters according to requirements, which effectively improves its adaptability to different cutting scenarios. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0020] Figure 1 A schematic diagram of an embodiment of the terminal pin cutting device provided by this utility model;
[0021] Figure 2 A schematic diagram showing the disassembled structure of some components in one embodiment of the terminal pin cutting device provided by this utility model;
[0022] Figure 3 A schematic diagram of the cutting mechanism in one embodiment of the terminal pin cutting device provided by this utility model;
[0023] Figure 4 A top view of an embodiment of the terminal pin cutting device provided by this utility model;
[0024] Figure 5for Figure 4 A cross-sectional view along the AA direction;
[0025] Figure 6 for Figure 5 A magnified view of the location indicated by arrow B.
[0026] Explanation of icon numbers:
[0027] 100. Terminal pin cutting device; 1. Frame; 1a. Drop hole; 11. Feeding track; 11a. Receiving groove; 11b. Through hole; 11c. Movement clearance; 12. Waste collection box; 13. Receiving box; 2. Limiting mechanism; 21. First driving component; 22. Abutting component; 3. Cutting mechanism; 31. Second driving component; 32. Sliding seat; 32a. Mounting groove; 32b. Screw hole; 33. Cutting tool; 34. Locking component; 341. Screw; 35. Mounting plate; 351. Guide rail; 4. Conveying mechanism; 41. Third driving component; 42. Push rod; 5. Discharge platform; 5a. Limiting groove; 6. Sensor; 7. Clamping assembly; 71. Driver; 72. Pressure rod; 8. Control device;
[0028] 200, Terminal; 210, Body; 220, Pin Header.
[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0033] This utility model proposes a terminal pin cutting device.
[0034] Please see Figures 1 to 6 In one embodiment of this utility model, the terminal pin cutting device 100 includes a frame 1, a limiting mechanism 2, and a cutting mechanism 3. A feeding track 11 is provided on the frame 1, and a receiving groove 11a is provided on the feeding track 11 along a first direction. The terminal 200 includes a main body 210 and a plurality of pins 220 disposed on the main body 210. The receiving groove 11a is used to place the terminal 200 so that the pins 220 of the terminal 200 extend out of the receiving groove 11a. The limiting mechanism 2 is disposed on the frame 1 and along a second direction on one side of the feeding track 11, and the cutting mechanism 3 is disposed on the other side of the feeding track 11. The device includes a first driving member 21 and an abutment member 22. The abutment member 22 has an abutment surface for abutting against a plurality of pins 220 of the terminal 200. The first driving member 21 is used to drive the abutment member 22 to move in a direction. The cutting mechanism 3 includes a second driving member 31, a sliding seat 32 and a plurality of cutters 33. The sliding seat 32 is drivenly connected to the second driving member 31. The plurality of cutters 33 are arranged on the sliding seat 32 in a first direction and any cutter 33 is detachably connected to the sliding seat 32. The second driving member 31 is used to drive the sliding seat 32 to move in a direction closer to the abutment member 22 so that the cutter 33 cuts off the pins 220 of the terminal 200.
[0035] Understandably, since the cutter 33 is detachably connected to the slide seat 32, the multiple cutters 33 on the slide seat 32 can be arranged in any way. Multiple cutters 33 are arranged side-by-side in sequence on the slide seat 32, capable of cutting off an entire row of pins 220 of the terminal 200. If some of the cutters 33 are disassembled to create gaps between them, during the cutting operation, the pins 220 corresponding to the gaps are retained while the other pins 220 are cut off. Therefore, the terminal pin cutting device 100 can assemble the cutters 33 as needed, effectively improving its adaptability to different cutting scenarios.
[0036] It should be noted that the first driving component 21 and the second driving component 31 can be configured as driving components such as motors and cylinders, depending on actual needs, and no specific limitation is made here. In this embodiment, both the first driving component 21 and the second driving component 31 are configured as motors. The motors can precisely control the contact position of the contact component 22 so that the pins 220 of the terminal 200 are against the contact surface of the contact component 22. When the cutter 33 performs the cutting operation, it can avoid bending the pins 220 and achieve rapid cutting, which is beneficial to improving cutting efficiency and cutting quality. In this embodiment, the first direction and the second direction are orthogonal, and the third direction is the height direction. Of course, in some other embodiments of this utility model, the included angle between the first direction and the second direction is not specifically limited, as long as it can cut off the corresponding pins 220 on the main body 210 of the terminal 200.
[0037] In one implementation, such as Figure 1 and Figure 3 As shown, the cutting mechanism 3 also includes a locking member 34. The sliding seat 32 has multiple mounting slots 32a extending in a second direction. The cutting tool 33 is disposed in the mounting slot 32a and detachably connected to the sliding seat 32 via the locking member 34. It should be noted that the number of mounting slots 32a is multiple and they are formed in the second direction on the sliding seat 32. When the cutting tool 33 is installed in the mounting slot 32a, the cutting tip faces the abutment member 22. The locking member 34 can be a screw, pin, or locking block, etc., as long as it can fix the cutting tool 33 in the mounting slot 32a; no specific limitation is made here. It can be understood that the locking member 34 not only enables the detachable connection between the cutting tool 33 and the sliding seat 32 but also ensures the stability of the cutting tool 33's installation on the sliding seat 32.
[0038] In one implementation, such as Figure 3As shown, the locking member 34 includes a screw 341, and the cutter 33 is provided with a mating hole (not shown). Multiple screw holes 32b are spaced apart along the second direction on the bottom wall of the mounting groove 32a. The screw 341 is used to pass through the mating hole and into different screw holes 32b to adjust the position of the cutter 33 on the sliding seat 32. It can be understood that by using the screw 341 to pass through the mating hole of the cutter 33 and screw it into different screw holes 32b, the extension length of the cutter head of the cutter 33 can be adjusted. During use, some cutters 33 that need to cut the pin 220 can have their screw 341 screwed into the screw hole 32b in the mounting groove 32a near the abutment member 22, while cutters 33 that do not need to cut the pin 220 can have their screw 341 screwed into the screw hole 32b in the mounting groove 32a away from the abutment member 22, thus achieving different cutting requirements. It is understandable that multiple screw holes 32b are provided to adjust the position of the tool 33, making it convenient to store the tool 33 during disassembly and assembly, and allowing for timely identification and replacement of tools 33 that have been used for a long time and have severely worn tips.
[0039] In one implementation, such as Figure 3 As shown, the cutting mechanism 3 also includes a mounting plate 35 and a guide rail 351 disposed on the mounting plate 35. The mounting plate 35 is disposed on the frame 1, and the guide rail 351 extends along the second direction. The sliding seat 32 is slidably disposed on the guide rail 351 and connected to the second driving member 31. It can be understood that the guide rail 351 on the mounting plate 35 is used to constrain the sliding seat 32 to reciprocate along the second direction, thereby improving the cutting accuracy, and the guide rail 351 can reduce the resistance encountered by the sliding seat 32 in its movement.
[0040] In one implementation, such as Figure 6 As shown, a movable gap 11c is formed between the feeding track 11 and the frame 1. The bottom wall of the receiving groove 11a is provided with a through hole 11b communicating with the movable gap 11c. The pin 220 extends from the through hole 11b to the movable gap 11c. The abutment 22 and the sliding seat 32 are used to enter the movable gap 11c to cut off the pin 220. This arrangement can make full use of the gap formed between the feeding track 11 and the frame 1, improve the space utilization of the equipment, and the through hole 11b on the bottom wall of the receiving groove 11a allows the pin 220 on the main body 210 of the terminal 200 to extend downward into the receiving groove 11a. When the cutter 33 cuts off the pin 220, the cut-off waste falls off under the action of gravity, which is convenient for recycling.
[0041] In one implementation, such as Figure 1 , Figure 5 and Figure 6As shown, the width of the through hole 11b is smaller than the width of the main body 210, and the through hole 11b extends through the length of the feeding track 11. With this configuration, the width of the terminal 200 main body 210 is greater than the width of the through hole 11b, allowing the terminal 200 main body 210 to be placed in the receiving groove 11a and the pin header 220 to extend from the through hole 11b. Furthermore, the feeding track 11 extends along a first direction, and the through hole 11b extends along the first direction, allowing the terminal 200 to move along the feeding track 11. By continuously feeding the terminal 200 onto the feeding track 11, continuous cutting operations can be achieved, which helps improve the processing efficiency of the device. Furthermore, the frame 1 is provided with a discharge hole 1a, which is located below the through hole 11b and communicates with the movable gap 11c. A waste collection box 12 is provided below the discharge hole 1a. After the cutter 33 cuts the pin header 220, the waste falls from the discharge hole 1a into the waste collection box 12 for easy recycling.
[0042] In one implementation, such as Figure 1 and Figure 4 As shown, the terminal pin cutting device 100 includes a conveying mechanism 4 located at one end of the feeding track 11. The conveying mechanism 4 includes a third driving member 41 and a push rod 42 drivenly connected to the third driving member 41. The push rod 42 pushes the terminals 200 on the feeding track 11 along a first direction. It should be noted that the length and stroke of the push rod 42 can be set according to actual needs. The third driving member 41 can also be a motor, cylinder, or other components. The third driving member 41 pushes the terminals 200 into the feeding track 11 in the opposite direction of the first direction via the push rod 42, which can realize the continuous conveying of the terminals 200. When the terminals 200 are pushed to a predetermined position on the feeding track 11, the limiting mechanism 2 and the cutting mechanism 3 perform a pin cutting operation on them. The setting of the third driving member 41 and the push rod 42 can realize the automatic conveying of the terminals 200, which is beneficial to improving processing efficiency.
[0043] In one implementation, such as Figure 4 As shown, the terminal pin cutting device 100 includes a feeding platform 5, which is located between the feeding track 11 and the third drive member 41. The feeding platform 5 has a limiting groove 5a along a first direction, which communicates with the receiving groove 11a for inserting the pins 220 of the terminal 200. It should be noted that the limiting groove 5a of the feeding platform 5 is used to pre-position the pins 220 of the terminal 200 before insertion. Then, the third drive member 41 drives the push rod 42 to push the terminal 200 into the feeding track 11. The terminal 200 can be continuously fed into the feeding platform 5 manually or by a robotic arm, and the terminal pin cutting device 100 can automatically complete the subsequent conveying and cutting operations.
[0044] In one implementation, such as Figures 4 to 6As shown, the terminal pin cutting device 100 also includes a sensor 6 and a clamping assembly 7. The sensor 6 is mounted on the frame 1 and located on the side of the limiting mechanism 2 near the conveying mechanism 4. The sensor 6 is positioned facing the feeding track 11 to detect the pins 220 of the terminal 200. The clamping assembly 7 includes a driver 71 and a pressure rod 72 driven and connected to the driver 71. The driver 71 is located above the feeding track 11 and electrically connected to the sensor 6. The driver 71 receives the signal from the sensor 6 and drives the pressure rod 72 to move downward to press the terminal 200 against the feeding track 11. It should be noted that the sensor 6 is used to count the pins 220. When the push rod 42 pushes the terminal 200 into the preset position of the feeding track 11, the sensor 6 detects the corresponding number of pins 220. The limiting mechanism 2 and the cutting mechanism 3 perform the cutting operation. The clamping assembly 7 can press the terminal 200 firmly onto the feeding track 11 to prevent the terminal 200 from shifting during the cutting process and affecting the cutting quality.
[0045] In one embodiment of this utility model, the number of sensors 6 can be set to two. The two sensors 6 are respectively arranged on both sides of the limiting mechanism 2 along the first direction and facing the feeding track 11. One of them is used to detect the number of terminal 200 pins 220 conveyed from the feeding table 5 to the feeding track 11, and the other is used to detect whether the terminal 200 pins 220 are accurately cut off after the cutting operation is completed, so as to improve the accuracy of the cutting operation.
[0046] In one implementation, such as Figure 1 As shown, two clamping components 7 are spaced apart on the feeding track 11. Any one of the drivers 71 is movably mounted on the feeding track 11 to adjust the distance between the two clamping rods 72. With this configuration, when terminals 200 of different lengths are fed onto the feeding track 11, the positions of the drivers 71 and the clamping rods 72 can be adjusted so that the two clamping components 7 can clamp both ends of terminals 200 of different lengths, improving its adaptability.
[0047] In one embodiment, such as Figure 1 As shown, the terminal pin cutting device 100 also includes a control device 8 and a receiving box 13 mounted on the frame 1. The limiting mechanism 2, the cutting mechanism 3, the conveying mechanism 4, and the sensor 6 are all electrically connected to the control device 8. The control device 8 is used to control the coordinated operation of each mechanism and the sensor 6 to realize the automated cutting process of the terminal pin 220, which can greatly improve production efficiency. The receiving box 13 is located at the end of the feeding track 11 away from the conveying mechanism 4 to receive the cut terminals 200.
[0048] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.
Claims
1. A terminal strip pin cutting device characterized by comprising: The terminal includes a main body and a plurality of pins disposed on one side of the main body, the plurality of pins being spaced apart along the length direction of the main body, and the terminal pin cutting device includes: A frame is provided with a feeding track, and the feeding track is provided with a receiving groove arranged along a first direction. The receiving groove is used to place the body of the terminal so that the pin header extends out of the receiving groove. A limiting mechanism is provided on the frame and along the second direction on one side of the feeding track. The limiting mechanism includes a first driving member and an abutting member drivenly connected to the first driving member. The abutting member has an abutting plane on the side away from the first driving member. The abutting plane is used to abut against a plurality of pins of the terminal. The first direction and the second direction form an angle. A cutting mechanism is provided on the frame and located on the side of the feeding track away from the limiting mechanism. The cutting mechanism includes a second driving member, a sliding seat, and a plurality of cutters. The sliding seat is drivenly connected to the second driving member. The plurality of cutters are arranged on the sliding seat along the first direction. Any cutter is detachably connected to the sliding seat. The second driving member is used to drive the sliding seat to move towards the abutment member so that the cutter cuts the pins of the terminal.
2. The terminal strip knife apparatus of claim 1, wherein, The cutting mechanism further includes a locking element. The sliding seat has a plurality of mounting slots extending along the second direction. The cutting tool is disposed in the mounting slot and is detachably connected to the sliding seat through the locking element.
3. The terminal strip knife apparatus of claim 2, wherein, The locking component includes a screw, the cutting tool is provided with a mating hole, and the bottom wall of the mounting groove is provided with a plurality of screw holes spaced apart along the second direction. The screw is used to pass through the mating hole and be located in different screw holes to adjust the position of the cutting tool on the sliding seat.
4. The terminal strip knife apparatus of claim 1, wherein, The cutting mechanism further includes a mounting plate and a guide rail disposed on the mounting plate. The mounting plate is disposed on the frame, and the guide rail extends along the second direction. The sliding seat is slidably disposed on the guide rail and connected to the second driving member.
5. The terminal strip knife apparatus of any one of claims 1 to 4, wherein, A movable gap is formed between the feeding track and the frame. The bottom wall of the receiving groove is provided with a through hole communicating with the movable gap. The pins extend from the through hole into the movable gap. The abutment and the sliding seat are used to enter the movable gap to cut off the pins.
6. The terminal strip knife apparatus of claim 5, wherein, The width of the through hole is smaller than the width of the main body, and the through hole is provided to extend through the length of the feeding track; And / or, the frame is provided with a material discharge hole, the material discharge hole is located below the through hole and communicates with the movable gap, and a waste collection box is provided below the material discharge hole.
7. The terminal strip knife apparatus of claim 1, wherein, The terminal pin cutting device includes a conveying mechanism located at one end of the feeding track. The conveying mechanism includes a third driving member and a push rod drivenly connected to the third driving member. The push rod pushes the terminals on the feeding track along the first direction.
8. The terminal pin cutting device as described in claim 7, characterized in that, The terminal pin cutting device includes a feeding platform, which is located between the feeding track and the third driving member. The feeding platform is provided with a limiting groove along the first direction, and the limiting groove communicates with the receiving groove for the insertion of the terminal pin.
9. The terminal pin cutting device as described in claim 1, characterized in that, The terminal pin cutting device further includes a sensor and a clamping assembly. The sensor is mounted on the frame to detect the pins of the terminal. The clamping assembly includes a driver and a pressure rod connected to the driver. The driver is located above the feeding track and electrically connected to the sensor. The driver is used to receive the signal from the sensor and drive the pressure rod to move downward to abut the terminal against the feeding track.
10. The terminal pin cutting device as described in claim 9, characterized in that, Two clamping components are spaced apart on the feeding track, and any one of the drivers is movably mounted on the feeding track to adjust the distance between the two clamping rods.