Wire stripping tin pick-up machine

By designing a wire stripping and tinning machine, which utilizes components such as pneumatic rods, clamps, and cutters to automate wire stripping and tinning, the problem of inconvenient manual operation in existing technologies is solved, and work efficiency and processing stability are improved.

CN121769609AInactive Publication Date: 2026-03-31HUIZHOU HONGXIN INTELLIGENT CONTROL TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-14
Publication Date
2026-03-31
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing wire stripping machines cannot automatically complete the wire stripping and soldering process of wire harnesses, requiring manual intervention, which is inconvenient to operate.

Method used

A wire stripping and tinning machine was designed, comprising a processing mechanism, a positioning mechanism, and a storage mechanism. It achieves automated wire stripping and tinning of cables through components such as pneumatic rods, clamps, cutters, and lifters, ensuring the stability and precise positioning of cables during transport.

Benefits of technology

It achieves automated wire stripping and tinning of cables, improving work efficiency, ensuring the stability and precise positioning of cables during processing, and reducing manual intervention.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121769609A_ABST
    Figure CN121769609A_ABST
Patent Text Reader

Abstract

The invention discloses a wire stripping tin pick-up machine, and relates to the technical field of wire stripping equipment, the wire stripping tin pick-up machine comprises a processing mechanism, the left side of the processing mechanism is provided with a positioning mechanism, the top of the processing mechanism is provided with a storage mechanism, and the bottom of the storage mechanism is fixedly connected with the top of the processing mechanism; the machining mechanism comprises a mounting box, the top of the mounting box is fixedly connected with a bottom plate, the top of the bottom plate is provided with a first clamping device, the back face of the first clamping device is fixedly connected with a motor, the back face of the motor is fixedly connected with a second moving block, and the right side of the second moving block is fixedly connected with a second pneumatic rod. And a tin pool is arranged at the bottom of the first clamping device, a mounting plate is fixedly connected to the top of the mounting box, and the outer surface of the second moving block is attached to the interior of the mounting plate. According to the wire stripping and tin dipping machine, a cable can be automatically led in, wire stripping and tin dipping are completed in the same machine, a finished cable is automatically placed, and the processing efficiency is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of wire stripping equipment, and more particularly to a wire stripping and tinning machine. Background Technology

[0002] Cables are a general term for items such as optical cables and electrical cables. They are mainly used for multiple functions such as control installation, equipment connection, and power transmission. Cables typically include a protective sheath and multiple inner cores. The protective sheath is used to cover the multiple inner cores to protect them. The inner cores include an insulating sheath and a metal core. The insulating sheath is used to cover the metal core to insulate it.

[0003] In existing technology, traditional wire stripping machines remove the outer sheath of the wire harness to expose the inner wire core, which is convenient for subsequent termination. However, after stripping, some wire harnesses still need to be removed by workers for soldering, which is inconvenient.

[0004] Therefore, there is an urgent need for a wire stripping and soldering machine. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wire stripping and soldering machine, comprising a processing mechanism, a positioning mechanism provided on the left side of the processing mechanism, a storage mechanism provided on the top of the processing mechanism, and the bottom of the storage mechanism being fixedly connected to the top of the processing mechanism; The processing mechanism includes a mounting box, a base plate is fixedly connected to the top of the mounting box, a first clamp is provided on the top of the base plate, a motor is fixedly connected to the back of the first clamp, a second moving block is fixedly connected to the back of the motor, a second pneumatic rod is fixedly connected to the right side of the second moving block, a solder pool is provided at the bottom of the first clamp, a mounting plate is fixedly connected to the top of the mounting box, and the outer surface of the second moving block is in contact with the inside of the mounting plate. The positioning mechanism includes a chassis, a locator is fixedly connected to the top of the chassis, a first fixing plate is provided on the right side of the chassis, the right side of the first fixing plate is fixedly connected to the left side of the chassis, and multiple clamping rods are fixedly connected to the front of the first fixing plate.

[0006] Preferably, a control plate is fixedly connected to the left side of the mounting plate, a mounting groove is provided inside the base plate, a mounting block is provided in the mounting groove, an inlet pipe is fixedly connected to the left side of the mounting block, an outlet pipe is fixedly connected to the right side of the mounting block, the input end of the inlet pipe is adapted to the right side of the clamping rod, a fixing block is fixedly connected to the bottom of the mounting block, a first moving block is fixedly connected to the bottom of the fixing block, and a first pneumatic rod is fixedly connected to the left side of the first moving block.

[0007] Preferably, the mounting block has a pressure groove inside, a pressure plate is provided at the bottom of the pressure groove, the bottom of the pressure plate is fixedly connected to the top of the mounting block, a pressure plate is provided at the top of the pressure plate, two support rods are fixedly connected to the outside of the pressure plate, a connecting plate is fixedly connected between the two support rods, a cylinder is fixedly connected to the bottom of the mounting block, and the bottom of the cylinder is fixedly connected to the top of the connecting plate.

[0008] Preferably, a lifting device is installed inside the mounting plate, and a cutter is fixedly connected to the front of the lifting device. There are two cutters, which are compatible with each other and are both compatible with the same outlet pipe.

[0009] Preferably, a first telescopic rod is fixedly connected to the front of the mounting plate, a third movable block is fixedly connected to the front of the first telescopic rod, a second clamp is fixedly connected to the back of the third movable block, a third pneumatic rod is fixedly connected to the back of the third movable block, and the third pneumatic rod is installed inside the mounting plate.

[0010] Preferably, a third clamp is provided on the front of the mounting plate, a second telescopic rod is fixedly connected to the right side of the third clamp, a fourth moving block is fixedly connected to the back of the second telescopic rod, a fourth pneumatic rod is fixedly connected to the right side of the fourth moving block, and the right side of the fourth pneumatic rod is fixedly connected to the left side of the mounting plate.

[0011] Preferably, a second fixing plate is fixedly connected to the front of the left side of the first fixing plate, and a positioning plate is fixedly connected to the left side of the second fixing plate. The positioning plate has multiple inlet holes inside.

[0012] Preferably, a positioning block is fixedly connected to the top of the second fixing plate, the positioning block has multiple compact positioning holes inside, a limiter is provided on the right side of the positioning block, and the bottom of the limiter is fixedly connected to the top of the base plate.

[0013] Preferably, the storage mechanism includes a slide bar, a receiving groove is provided on the top of the base plate, the top of the receiving groove is fixedly connected to the slide bar, a receiving plate is provided on the top of the slide bar, the bottom of the receiving plate is inserted into the slide bar, and the outer surface of the receiving plate is adapted to the receiving groove.

[0014] In summary, the present invention provides a wire stripping and soldering machine, which has the following beneficial effects: 1. This wire stripping and soldering machine uses a mounting box as the basic installation container and a base plate as the basic support. The cable enters the inlet pipe through the positioning mechanism, reaches the inside of the mounting block, and exits from the outlet pipe. The third clamp extends through the fourth pneumatic rod to clamp the cable at the outlet pipe opening. The third clamp retracts to lengthen the cable. At this time, the cylinder starts, driving the connecting plate downward, so that the pressure plate presses on top of the bearing plate, clamping the cable inside the mounting block. Simultaneously, the first clamp fixes the cable, securing it at both ends. Then, the lifting device is activated, and the two lifting devices move towards the center, cutting the cable sheath and internal cable with the cutter, causing the sheath to fall off. The first pneumatic rod... The first moving block retracts away from the cutter, causing the cut cable to move. The lift retracts, and the first clamp rotates by the motor, causing the cut end of the cable to face downwards and be tinned in the solder bath. Then the motor returns to its original position, and the third pneumatic rod moves the third moving block towards the cable. The second clamp holds the tinned and cut cable segment, while the first clamp releases. The third pneumatic rod then holds the cut cable on the front of the base plate away from the overall cable. The third clamp then re-stretches the cable. The entire processing mechanism integrates wire stripping and tinning, automating the entire workflow.

[0015] 2. This wire stripping and soldering machine uses a chassis to hold the cable coil. The cable coil is limited by a conical protrusion in the middle of the chassis, and the cable is pulled out by a positioner. Multiple clamps hold the cable to be processed, ensuring that the cable remains stable during transportation and does not shake or deviate. The positioning plate can gather the individual cables that are separated on the chassis in different positions together, and then arrange multiple individual cables into a row for transportation through the compact holes of the positioning block. The limiter is used to prevent the cable from sticking out. The positioning mechanism realizes the precise positioning and orderly transportation of the wire.

[0016] 3. This wire stripping and soldering machine uses a slide bar as a guide component for the sliding of the receiving plate. The slide bar ensures that the receiving plate can move along a predetermined straight trajectory during the movement. The cut and processed cables are placed on the receiving plate together with the second clamp, making it convenient for the staff to move the processed cables to their positions through the receiving plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional left-side structure of the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional right-side structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the processing mechanism of the present invention; Figure 4 This is a magnified disassembly diagram of the processing mechanism of the present invention; Figure 5 This is a three-dimensional structural diagram of the processing mechanism of the present invention; Figure 6 This is a three-dimensional structural diagram of the positioning mechanism of the present invention; Figure 7 This is a three-dimensional structural diagram of the storage mechanism of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Processing mechanism; 2. Positioning mechanism; 3. Storage mechanism; 101. Mounting box; 102. Base plate; 103. Mounting plate; 104. Control board; 105. Mounting block; 106. Inlet pipe; 107. Outlet pipe; 108. Fixing block; 109. First moving block; 110. First pneumatic rod; 111. Pressure plate; 112. Support rod; 113. Connecting plate; 114. Cylinder; 115. Pressure plate; 116. Lifter; 117. Cutter; 118. Second moving block; 119. Second pneumatic rod; 120. 121. Motor; 122. First clamp; 123. First telescopic rod; 124. Third pneumatic rod; 125. Third moving block; 126. Second clamp; 127. Third clamp; 128. Second telescopic rod; 129. Fourth moving block; 130. Solder bath; 201. Chassis; 202. Positioner; 203. First fixing plate; 204. Clamping rod; 205. Second fixing plate; 206. Positioning plate; 207. Positioning block; 208. Limiter; 301. Sliding bar; 302. Receiving plate. Detailed Implementation

[0019] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0020] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A wire stripping and soldering machine includes a processing mechanism 1, a positioning mechanism 2 is provided on the left side of the processing mechanism 1, a storage mechanism 3 is provided on the top of the processing mechanism 1, and the bottom of the storage mechanism 3 is fixedly connected to the top of the processing mechanism 1. The processing mechanism 1 includes a mounting box 101. A base plate 102 is fixedly connected to the top of the mounting box 101. A first clamp 121 is provided on the top of the base plate 102. A motor 120 is fixedly connected to the back of the first clamp 121. A second moving block 118 is fixedly connected to the back of the motor 120. A second pneumatic rod 119 is fixedly connected to the right side of the second moving block 118. A solder pool 130 is provided at the bottom of the first clamp 121. A mounting plate 103 is fixedly connected to the top of the mounting box 101. The outer surface of the second moving block 118 is in contact with the interior of the mounting plate 103.

[0021] A control plate 104 is fixedly connected to the left side of the mounting plate 103. An installation groove is provided inside the base plate 102, and a mounting block 105 is provided in the installation groove. An inlet pipe 106 is fixedly connected to the left side of the mounting block 105, and an outlet pipe 107 is fixedly connected to the right side of the mounting block 105. The input end of the inlet pipe 106 is adapted to the right side of the clamping rod 204. A fixing block 108 is fixedly connected to the bottom of the mounting block 105. A first moving block 109 is fixedly connected to the bottom of the fixing block 108. A first pneumatic rod 110 is fixedly connected to the left side of the first moving block 109.

[0022] The mounting block 105 has a pressure groove inside, and a pressure plate 115 is provided at the bottom of the pressure groove. The bottom of the pressure plate 115 is fixedly connected to the top of the mounting block 105. A pressure plate 111 is provided at the top of the pressure plate 115. Two support rods 112 are fixedly connected to the outside of the pressure plate 111. The same connecting plate 113 is fixedly connected between the two support rods 112. A cylinder 114 is fixedly connected to the bottom of the mounting block 105. The bottom of the cylinder 114 is fixedly connected to the top of the connecting plate 113.

[0023] The mounting plate 103 has a lifter 116 installed inside. A cutter 117 is fixedly connected to the front of the lifter 116. There are two cutters 117, which are compatible with each other and are both compatible with the same outlet pipe 107.

[0024] The front of the mounting plate 103 is fixedly connected to a first telescopic rod 122, the front of the first telescopic rod 122 is fixedly connected to a third moving block 124, the back of the third moving block 124 is fixedly connected to a second clamp 125, the back of the third moving block 124 is fixedly connected to a third pneumatic rod 123, and the third pneumatic rod 123 is installed inside the mounting plate 103.

[0025] A third clamp 126 is provided on the front of the mounting plate 103. A second telescopic rod 127 is fixedly connected to the right side of the third clamp 126. A fourth moving block 128 is fixedly connected to the back of the second telescopic rod 127. A fourth pneumatic rod 129 is fixedly connected to the right side of the fourth moving block 128. The right side of the fourth pneumatic rod 129 is fixedly connected to the left side of the mounting plate 103.

[0026] The mounting box 101 serves as the basic mounting container, and the base plate 102 provides basic support. The cable enters the inlet pipe 106 through the positioning mechanism 2, reaches the inside of the mounting block 105, and exits from the outlet pipe 107. The cable at the outlet pipe 107 is clamped by the third clamp 126 extending through the fourth pneumatic rod 129. The third clamp 126 retracts to lengthen the cable. At this time, the cylinder 114 is activated, driving the connecting plate 113 downward, so that the pressure plate 111 presses against the bearing plate 115, clamping the cable inside the mounting block 105. Simultaneously, the first clamp 121 fixes the cable, securing it at both ends. Then, the lifting device 116 is activated, and the two lifting devices 116 move towards the center, cutting the cable sheath and internal cable with the cutter 117, causing the sheath to fall. The first pneumatic rod... The first moving block 109 is retracted away from the cutter 117 by the lever 110, causing the cut cable to move. The lift 116 retracts, and the first clamp 121 rotates by the motor 120, so that the cut end of the cable faces downwards and is tinned by the solder bath 130. Then the motor 120 returns to the normal angle, and the third pneumatic lever 123 is activated to move the third moving block 124 toward the cable. The second clamp 125 clamps the tinned and cut cable segment, and the first clamp 121 is released. The third pneumatic lever 123 clamps the cut cable to the front of the base plate 102 away from the overall cable. The third clamp 126 then stretches the cable again. The processing mechanism 1 can integrate wire stripping and tinning into one, automating the entire process.

[0027] Please see Figure 6 The positioning mechanism 2 includes a chassis 201, a locator 202 is fixedly connected to the top of the chassis 201, a first fixing plate 203 is provided on the right side of the chassis 201, the right side of the first fixing plate 203 is fixedly connected to the left side of the base plate 102, and a plurality of clamping rods 204 are fixedly connected to the front of the first fixing plate 203.

[0028] A second fixing plate 205 is fixedly connected to the front left side of the first fixing plate 203, and a positioning plate 206 is fixedly connected to the left side of the second fixing plate 205. The positioning plate 206 has multiple inlet holes inside.

[0029] The top of the second fixed plate 205 is fixedly connected to a positioning block 207. The positioning block 207 has multiple compact positioning holes inside. A limiter 208 is provided on the right side of the positioning block 207. The bottom of the limiter 208 is fixedly connected to the top of the base plate 102.

[0030] The chassis 201 is used to accommodate the cable coil. The cable coil is limited by the conical protrusion in the middle of the chassis 201, and the cable is pulled out by the positioner 202. Multiple clamping rods 204 are used to clamp the cable to be processed to ensure that the cable remains stable during transportation and does not shake or deviate. The positioning plate 206 can gather the cables that are separated on the chassis 201 at different positions together. Then, the multiple single cables are arranged into a row for transportation through the compact holes of the positioning block 207. The limiter 208 is used to prevent the cable from sticking out. The positioning mechanism 2 realizes the precise positioning and orderly transportation of the wire.

[0031] Please see Figure 7 The storage mechanism 3 includes a slide bar 301. The top of the base plate 102 is provided with a receiving groove. The top of the receiving groove is fixedly connected to the slide bar 301. A receiving plate 302 is provided on the top of the slide bar 301. The bottom of the receiving plate 302 is inserted into the slide bar 301. The outer surface of the receiving plate 302 is adapted to the receiving groove.

[0032] The slide bar 301 serves as a guide component for the sliding of the receiving plate 302. The slide bar 301 ensures that the receiving plate 302 can move along a predetermined straight trajectory during the movement. The cut and processed cable is placed on the receiving plate 302 together with the second clamp 125, making it convenient for the staff to move the processed cable to the position through the receiving plate 302.

[0033] In use, the mounting box 101 serves as the basic mounting container, and the base plate 102 serves as the basic support. The cable enters the inlet pipe 106 through the positioning mechanism 2, reaches the inside of the mounting block 105, and exits from the outlet pipe 107. The cable at the outlet pipe 107 is clamped by the third clamp 126 extending through the fourth pneumatic rod 129. The third clamp 126 retracts to lengthen the cable. At this time, the cylinder 114 is activated, driving the connecting plate 113 downward, so that the pressure plate 111 presses on the pressure plate 115, clamping the cable inside the mounting block 105. At the same time, the first clamp 121 fixes the cable, so that the cable is fixed at both ends. Then, the lifting device 116 is activated, and the two lifting devices 116 move towards the center, and the cutter 117 cuts the cable sheath and the internal cable, causing the sheath to fall down. The pneumatic rod 110 retracts the first moving block 109 away from the cutter 117, causing the cut cable to move. The lifter 116 retracts, and the first clamp 121 rotates by the motor 120, causing the cut end of the cable to face downwards and be tinned by the solder bath 130. Then the motor 120 returns to the normal angle, and the third pneumatic rod 123 is activated to move the third moving block 124 towards the cable. The second clamp 125 clamps the tinned and cut cable segment, while the first clamp 121 is released. The third pneumatic rod 123 clamps the cut cable to the front of the base plate 102 away from the overall cable. The third clamp 126 then re-stretches the cable. The processing mechanism 1 can integrate wire stripping and tinning into one, automating the entire workflow. The chassis 201 is used to accommodate the cable coil, which is limited by the conical protrusion in the middle of the chassis 201. The cable is pulled out by the positioner 202. Multiple clamps 204 are used to hold the cable to be processed, ensuring that the cable remains stable during transportation and does not shake or shift. The positioning plate 206 can gather the individual cables that are separated on the chassis 201 at different positions together. Then, the compact holes of the positioning block 207 arrange multiple individual cables into a row for transportation. The limiter 208 is used to prevent the cable from sticking out. The positioning mechanism 2 realizes the precise positioning and orderly transportation of the wires. The slide bar 301 serves as a guide component for the sliding of the receiving plate 302. The slide bar 301 ensures that the receiving plate 302 can move along a predetermined straight trajectory during movement. The cut and processed cable is placed on the receiving plate 302 together by the second clamp 125, which makes it convenient for the staff to move the processed cable position through the receiving plate 302.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire stripping and soldering machine, comprising a processing mechanism (1), characterized in that: A positioning mechanism (2) is provided on the left side of the processing mechanism (1), and a storage mechanism (3) is provided on the top of the processing mechanism (1). The bottom of the storage mechanism (3) is fixedly connected to the top of the processing mechanism (1). The processing mechanism (1) includes a mounting box (101), a base plate (102) is fixedly connected to the top of the mounting box (101), a first clamp (121) is provided on the top of the base plate (102), a motor (120) is fixedly connected to the back of the first clamp (121), a second moving block (118) is fixedly connected to the back of the motor (120), a second pneumatic rod (119) is fixedly connected to the right side of the second moving block (118), a solder pool (130) is provided at the bottom of the first clamp (121), a mounting plate (103) is fixedly connected to the top of the mounting box (101), and the outer surface of the second moving block (118) is in contact with the interior of the mounting plate (103). The positioning mechanism (2) includes a chassis (201), a locator (202) is fixedly connected to the top of the chassis (201), a first fixing plate (203) is provided on the right side of the chassis (201), the right side of the first fixing plate (203) is fixedly connected to the left side of the base plate (102), and a plurality of clamping rods (204) are fixedly connected to the front of the first fixing plate (203).

2. The wire stripping and tinning machine according to claim 1, characterized in that: A control plate (104) is fixedly connected to the left side of the mounting plate (103). An installation groove is provided inside the base plate (102). An installation block (105) is provided in the installation groove. An inlet pipe (106) is fixedly connected to the left side of the installation block (105). An outlet pipe (107) is fixedly connected to the right side of the installation block (105). The input end of the inlet pipe (106) is adapted to the right side of the clamping rod (204). A fixing block (108) is fixedly connected to the bottom of the installation block (105). A first moving block (109) is fixedly connected to the bottom of the fixing block (108). A first pneumatic rod (110) is fixedly connected to the left side of the first moving block (109).

3. The wire stripping and soldering machine according to claim 2, characterized in that: The mounting block (105) has a pressure groove inside, and a pressure plate (115) is provided at the bottom of the pressure groove. The bottom of the pressure plate (115) is fixedly connected to the top of the mounting block (105). A pressure plate (111) is provided at the top of the pressure plate (115). Two support rods (112) are fixedly connected to the outside of the pressure plate (111). The same connecting plate (113) is fixedly connected between the two support rods (112). A cylinder (114) is fixedly connected to the bottom of the mounting block (105). The bottom of the cylinder (114) is fixedly connected to the top of the connecting plate (113).

4. The wire stripping and tinning machine according to claim 1, characterized in that: The mounting plate (103) is equipped with a lifter (116) inside. A cutter (117) is fixedly connected to the front of the lifter (116). There are two cutters (117), which are adapted to each other and are adapted to the same outlet pipe (107).

5. A wire stripping and tinning machine according to claim 1, characterized in that: The front of the mounting plate (103) is fixedly connected to a first telescopic rod (122), the front of the first telescopic rod (122) is fixedly connected to a third moving block (124), the back of the third moving block (124) is fixedly connected to a second clamp (125), the back of the third moving block (124) is fixedly connected to a third pneumatic rod (123), and the third pneumatic rod (123) is installed inside the mounting plate (103).

6. The wire stripping and tinning machine according to claim 1, characterized in that: The mounting plate (103) is provided with a third clamp (126) on the front side. A second telescopic rod (127) is fixedly connected to the right side of the third clamp (126). A fourth moving block (128) is fixedly connected to the back side of the second telescopic rod (127). A fourth pneumatic rod (129) is fixedly connected to the right side of the fourth moving block (128). The right side of the fourth pneumatic rod (129) is fixedly connected to the left side of the mounting plate (103).

7. A wire stripping and soldering machine according to claim 1, characterized in that: A second fixing plate (205) is fixedly connected to the front of the left side of the first fixing plate (203), and a positioning plate (206) is fixedly connected to the left side of the second fixing plate (205). The positioning plate (206) has multiple inlet holes inside.

8. A wire stripping and tinning machine according to claim 7, characterized in that: The top of the second fixing plate (205) is fixedly connected to a positioning block (207). The positioning block (207) has multiple compact positioning holes inside. A limiter (208) is provided on the right side of the positioning block (207). The bottom of the limiter (208) is fixedly connected to the top of the base plate (102).

9. A wire stripping and tinning machine according to claim 1, characterized in that: The storage mechanism (3) includes a slide bar (301), and the top of the base plate (102) is provided with a receiving groove. The top of the receiving groove is fixedly connected to the slide bar (301). The top of the slide bar (301) is provided with a receiving plate (302). The bottom of the receiving plate (302) is inserted into the slide bar (301), and the outer surface of the receiving plate (302) is adapted to the receiving groove.