Raw material cutting equipment for hard bags and suitcases

Abstract

The invention discloses raw material cutting equipment for hard bags and suitcases, and relates to the technical field of bag raw material cutting. The cylindrical saw blade and bidirectional feeding control are adopted, the limitation that a traditional linear saw blade can only conduct linear cutting is overcome, and various special shapes can be flexibly cut. The cylindrical saw blade moves in a reciprocating mode, and cooperative control of a feeding electric cylinder and a feeding servo motor is combined, so that a plate accurately moves in the two orthogonal directions, and cutting of a complex path is achieved. And through magnetic cooperation of the clamping rotary disc, the second electromagnet and the second permanent magnet, rapid clamping and replacement of the cylindrical saw blade are achieved. During electrification, the magnetic force drives the clamping turntable to rotate to drive the clamping head to clamp the saw blade; the saw blade automatically loosens when power is off. Compared with the tedious process that traditional saw blade replacement depends on manual disassembly and assembly, the automatic design greatly shortens the replacement time, reduces the shutdown time of equipment, remarkably improves the production efficiency, and is particularly suitable for the production scene where saw blades are frequently replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting of raw materials for luggage, and particularly to a cutting device for raw materials used in hard luggage. Background Art

[0002] In the manufacturing of hard luggage, the cutting of plates is a key process. However, traditional cutting devices usually use straight saw blades, which can only perform straight cutting and cannot meet the cutting requirements for irregular shapes. This limitation severely restricts the diversity and innovation of the design of hard luggage, affecting the market competitiveness of products. In addition, when the traditional saw blade is damaged or needs to be replaced, it relies on manual disassembly and assembly, which is cumbersome and time-consuming, resulting in a long downtime of the device and low production efficiency. This problem is particularly prominent especially when the saw blade needs to be replaced frequently. At the same time, the adaptability of traditional devices to plates of different thicknesses is poor, and a whole set of components often needs to be replaced, increasing the operation complexity and cost. Summary of the Invention

[0003] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solution: A cutting device for raw materials used in hard luggage, including a base plate, on which a feeding part is fixedly installed overhead through a frame, and the feeding part can clamp and fix the plate to be cut; a C-shaped frame is also fixedly installed on the base plate, and a driving part is movably installed on the C-shaped frame. The driving part includes two symmetrically arranged extended arm beams, which are respectively arranged on the upper and lower sides of the feeding part. A clamping frame is fixedly installed at the end of each extended arm beam. Two clamping heads for fixing the ends of the cylindrical saw blade are arranged inside the clamping frame. Each clamping head is slidably arranged on the clamping frame through two clamping and pressing sliding rods. A guiding through hole is also formed on the extended arm beam, and the cylindrical saw blade can pass through the guiding through hole.

[0004] Preferably, the clamping and pressing sliding rod is fixedly matched with the clamping head, and the clamping and pressing sliding rod is slidably matched with the clamping frame. A fixed slider is fixedly installed at the end of the clamping and pressing sliding rod away from the clamping head, and a sliding pin is fixedly arranged on the fixed slider.

[0005] Preferably, a clamping turntable bracket is fixedly installed on the clamping frame, and a clamping turntable is rotatably installed on the clamping frame through the clamping turntable bracket. Two inclined chutes are formed on the clamping turntable, and the two chutes are symmetrically arranged with respect to the center origin of the clamping turntable. The sliding pin is slidably arranged inside the chute.

[0006] Preferably, a second electromagnet bracket is fixedly installed on the clamping turntable bracket, a second electromagnet is fixedly installed on the second electromagnet bracket, and a second permanent magnet magnetically matched with the second electromagnet is fixedly installed on the clamping turntable, which is used to drive the clamping turntable to rotate on the clamping turntable bracket.

[0007] Preferably, the driving part further includes an adjusting frame, on which an adjusting lead screw is rotatably installed, and an adjusting motor is fixedly installed on the adjusting frame. The adjusting lead screw is fixedly installed on the output shaft of the adjusting motor. One of the extension arm beams located below the feeding part is fixedly fitted with the adjusting frame and is also rotatably fitted with the adjusting lead screw; one of the extension arm beams located above the feeding part is slidably fitted with the adjusting frame and is in threaded driving cooperation with the adjusting lead screw for adjusting the distance between the two extension arm beams.

[0008] Preferably, a synchronous sliding support plate is fixedly installed in the middle of the adjusting frame. The synchronous sliding support plate is slidably arranged on the movement guiding rod of the adjusting frame. A first permanent magnet slidably fitted with the movement guiding rod of the adjusting frame is fixedly installed on the upper surface of the synchronous sliding support plate. A shock-absorbing rubber pad is in contact fit with the upper surface of the first permanent magnet. The shock-absorbing rubber pad is fixedly installed on the first electromagnet. Both the first electromagnet and the cylindrical saw blade are fixedly installed on the C-shaped frame.

[0009] Preferably, a reset elastic spring is further arranged on the lower surface of the synchronous sliding support plate. Both ends of the reset elastic spring are fixedly fitted with the bottom end of the C-shaped frame and the synchronous sliding support plate. The first electromagnet and the first permanent magnet are magnetically coupled to drive the relative movement between the cylindrical saw blade and the board.

[0010] Preferably, the feeding part includes an edge strengthening bottom plate fixedly installed on the frame and a supporting sliding platform plate. The supporting sliding platform plate is arranged at the inner side of the edge strengthening bottom plate. An internal feeding frame is slidably arranged on the upper surface of the supporting sliding platform plate. Clamping strips are slidably arranged on four sides of the internal feeding frame through two parallel clamping guiding rods. The clamping guiding rods are slidably fitted with the internal feeding frame, and the clamping strips are fixedly fitted with the clamping guiding rods. The same number of fixing screws as the clamping guiding rods are also threadedly arranged on the internal feeding frame. The fixing screws are used to fix the positions of the clamping guiding rods on the internal feeding frame. The four clamping strips jointly define the position of the board.

[0011] Preferably, an external feeding frame is arranged outside the internal feeding frame. An internal guiding slide rod is fixedly installed on the external feeding frame. An internal feeding lead screw parallel to the internal guiding slide rod is rotatably installed on the external feeding frame. A feeding servo motor for driving the rotation of the internal feeding lead screw is fixedly installed on the external feeding frame.

[0012] Preferably, four feeding electric cylinders are fixedly installed on the edge strengthening bottom plate. The four feeding electric cylinders are symmetrically arranged at the four corners of the edge strengthening bottom plate, and the end parts of the telescopic rods of the four feeding electric cylinders are fixedly fitted with the external feeding frame.

[0013] The present invention has the following beneficial effects compared with the prior art: (1) The present invention adopts a cylindrical saw blade and two-way feed control, overcoming the limitation that traditional straight saw blades can only perform straight cutting, and can flexibly cut various special-shaped shapes. Through reciprocating motion, the cylindrical saw blade, in combination with the coordinated control of the feed electric cylinder and the feed servo motor, enables the sheet material to move precisely in two orthogonal directions, realizing the cutting of complex paths, meeting the requirements of diverse shapes in the design of hard-sided luggage, and enhancing production flexibility and product innovation; (2) The present invention realizes the rapid clamping and replacement of the cylindrical saw blade through the magnetic force cooperation between the clamping turntable and the second electromagnet and the second permanent magnet. When energized, the magnetic force drives the clamping turntable to rotate, driving the clamping head to clamp the saw blade; when powered off, the saw blade is automatically released. Compared with the cumbersome process of traditional saw blade replacement relying on manual disassembly and assembly, this automated design significantly shortens the replacement time, reduces the equipment downtime, and remarkably improves the production efficiency, especially suitable for production scenarios with frequent saw blade replacement; (3) The present invention is equipped with an adjustment frame, an adjustment motor, and an adjustment screw rod, which can flexibly adjust the distance between the extension arm beams to adapt to cylindrical saw blades of different lengths, thereby meeting the cutting requirements of sheets of different thicknesses. The operation is simple and precise, avoiding the trouble of replacing the entire set of cutting tools in traditional equipment and enhancing the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at position A in it.

[0016] Figure 3 It is a schematic diagram of the structure at the frame of the present invention.

[0017] Figure 4 It is a schematic diagram of the structure at the extension arm beam of the present invention.

[0018] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at position B in it.

[0019] Figure 6 It is a schematic diagram of the structure at the guiding perforation hole of the present invention.

[0020] Figure 7 It is a schematic diagram of the clamping frame structure of the present invention.

[0021] Figure 8 It is a schematic diagram of the structure at the second permanent magnet of the present invention.

[0022] Figure 9 It is a schematic diagram of the clamping head structure of the present invention.

[0023] In the figure: 101 - base plate; 102 - frame; 103 - edge - strengthened base plate; 104 - feeding electric cylinder; 105 - feeding servo motor; 106 - external feeding frame; 107 - internal feeding lead screw; 108 - internal guiding slide bar; 109 - internal feeding frame; 110 - clamping guiding rod; 111 - fixing screw; 112 - clamping strip; 113 - supporting sliding platform plate; 114 - C - shaped frame; 115 - first electromagnet; 116 - shock - absorbing rubber pad; 117 - first permanent magnet; 118 - synchronous sliding support plate; 119 - adjusting frame; 120 - reset elastic spring; 121 - adjusting lead screw; 122 - adjusting motor; 123 - extension arm beam; 124 - clamping frame; 125 - guiding perforation hole; 126 - clamping extrusion slide bar; 127 - fixed slider; 128 - clamping turntable; 129 - clamping head; 130 - chute; 131 - sliding pin; 132 - second electromagnet; 133 - second permanent magnet; 134 - second electromagnet bracket; 135 - clamping turntable bracket; 136 - cylindrical saw blade; 137 - adjusting frame movement guiding rod. Specific implementation mode

[0024] The following combines with the attached Figures 1-9 , and further illustrates the technical solution of the present invention through specific implementation modes.

[0025] The present invention provides a raw material cutting device for hard luggage cases, including a base plate 101. An advancing part is fixedly installed above the base plate 101 through a frame 102, and the advancing part can clamp and fix the plate to be cut. A C-shaped frame 114 is also fixedly installed on the base plate 101. A driving part is movably installed on the C-shaped frame 114. The driving part includes two symmetrically arranged extended arm beams 123. The two extended arm beams 123 are respectively arranged on the upper and lower sides of the advancing part. A clamping frame 124 is fixedly installed at the end of each extended arm beam 123. Two clamping heads 129 for fixing the ends of the cylindrical saw blades 136 are arranged inside the clamping frame 124. Each clamping head 129 is slidably arranged on the clamping frame 124 through two clamping and pressing sliding rods 126. A guiding through hole 125 is also formed on the extended arm beam 123, and the cylindrical saw blade 136 can penetrate through the guiding through hole 125. The clamping and pressing sliding rod 126 is fixedly matched with the clamping head 129, and the clamping and pressing sliding rod 126 is slidably matched with the clamping frame 124. A fixed slider 127 is fixedly installed at the end of the clamping and pressing sliding rod 126 away from the clamping head 129, and a sliding pin 131 is fixedly arranged on the fixed slider 127. A clamping turntable support 135 is fixedly installed on the clamping frame 124. A clamping turntable 128 is rotatably installed on the clamping frame 124 through the clamping turntable support 135. Two inclined chutes 130 are formed on the clamping turntable 128, and the two chutes 130 are symmetrically arranged about the center origin of the clamping turntable 128. The sliding pin 131 is slidably arranged inside the chute 130. A second electromagnet support 134 is fixedly installed on the clamping turntable support 135. A second electromagnet 132 is fixedly installed on the second electromagnet support 134. A second permanent magnet 133 magnetically matched with the second electromagnet 132 is fixedly installed on the clamping turntable 128 to drive the clamping turntable 128 to rotate on the clamping turntable support 135.

[0026] The driving part further includes an adjusting frame 119, on which an adjusting lead screw 121 is rotatably installed, and an adjusting motor 122 is fixedly installed on the adjusting frame 119. The adjusting lead screw 121 is fixedly installed on the output shaft of the adjusting motor 122. One of the extension arm beams 123 located below the feeding part is fixedly fitted with the adjusting frame 119 and is also rotatably fitted with the adjusting lead screw 121; one of the extension arm beams 123 located above the feeding part is slidably fitted with the adjusting frame 119 and is in threaded driving cooperation with the adjusting lead screw 121 for adjusting the distance between the two extension arm beams 123. A synchronous sliding support plate 118 is fixedly installed in the middle of the adjusting frame 119. The synchronous sliding support plate 118 is slidably arranged on the movement guiding rod 137 of the adjusting frame. A first permanent magnet 117 slidably fitted with the movement guiding rod 137 of the adjusting frame is fixedly installed on the upper surface of the synchronous sliding support plate 118. A shock-absorbing rubber pad 116 is in contact with the upper surface of the first permanent magnet 117. The shock-absorbing rubber pad 116 is fixedly installed on the first electromagnet 115. The first electromagnet 115 and the cylindrical saw blade 136 are both fixedly installed on the C-shaped frame 114. A reset elastic spring 120 is further arranged on the lower surface of the synchronous sliding support plate 118. Both ends of the reset elastic spring 120 are fixedly fitted with the bottom end of the C-shaped frame 114 and the synchronous sliding support plate 118. The first electromagnet 115 and the first permanent magnet 117 are magnetically coupled to drive the relative movement between the cylindrical saw blade 136 and the board.

[0027] The feeding part includes an edge strengthening bottom plate 103 and a supporting sliding platform plate 113 fixedly installed on the frame 102. The supporting sliding platform plate 113 is arranged at the inner position of the edge strengthening bottom plate 103. An internal feeding frame 109 is slidably arranged on the upper surface of the supporting sliding platform plate 113. Clamping strips 112 are slidably fitted on four sides of the internal feeding frame 109 through two parallel clamping guiding rods 110. The clamping guiding rods 110 are slidably fitted with the internal feeding frame 109, and the clamping strips 112 are fixedly fitted with the clamping guiding rods 110. The internal feeding frame 109 is also provided with fixing screws 111 in the same number as the clamping guiding rods 110. The fixing screws 111 are used to fix the positions of the clamping guiding rods 110 on the internal feeding frame 109. The four clamping strips 112 jointly define the position of the board. An external feeding frame 106 is arranged outside the internal feeding frame 109. An internal guiding slide bar 108 is fixedly installed on the external feeding frame 106. An internal feeding lead screw 107 parallel to the internal guiding slide bar 108 is rotatably installed on the external feeding frame 106. A feeding servo motor 105 for driving the rotation of the internal feeding lead screw 107 is fixedly installed on the external feeding frame 106. Four feeding electric cylinders 104 are fixedly installed on the edge strengthening bottom plate 103. The four feeding electric cylinders 104 are symmetrically arranged at the four corners of the edge strengthening bottom plate 103, and the end parts of the telescopic rods of the four feeding electric cylinders 104 are fixedly fitted with the external feeding frame 106.

[0028] The working principle of a raw material cutting device for hard luggage cases disclosed in the present invention is as follows: The raw materials for hard luggage cases are generally solid wood boards or ecological solid wood boards, and later the boards are wrapped with leather to achieve an aesthetic effect. When in use, the boards need to be cut into the required shapes. Therefore, the raw material boards to be cut are placed on the support sliding platform plate 113, and then all the clamping strips 112 are made to fit the edges of the boards according to the size of the boards. Then, by rotating the fixing screw 111, the clamping guide rod 110 is fixed on the inner feed frame 109, thereby limiting the positions of the clamping strips 112 and the boards and ensuring the synchronous movement of the inner feed frame 109 and the boards. Before use, a through hole is drilled at the center position of the board with a hand drill (at the center position of the support sliding platform plate 113, there is a through hole at the center of the support sliding platform plate 113, and the drill bit can pass through this through hole). Subsequently, the cylindrical saw blade 136 is passed through the two guiding perforation holes 125, and both ends of the cylindrical saw blade 136 are respectively located between the corresponding clamping heads 129. Then, the second electromagnet 132 is activated, and the second electromagnet 132 generates a magnetic force to attract the second permanent magnet 133. The second permanent magnet 133 moves towards the second electromagnet 132. During this process, the second permanent magnet 133 drives the clamping turntable 128 to rotate, the clamping turntable 128 drives the sliding groove 130 to rotate, and the sliding groove 130 drives the sliding pin 131 to slide within the sliding groove 130, thereby driving the fixed slider 127 to move along the axial direction of the clamping and pressing slide rod 126. The clamping and pressing slide rod 126 and the fixed slider 127 are fixedly matched. Therefore, the clamping and pressing slide rod 126, the fixed slider 127, and the clamping heads 129 will move synchronously. At this time, the two clamping heads 129 will move relatively, causing the two clamping heads 129 to move towards the cylindrical saw blade 136, thereby fixing both ends of the cylindrical saw blade 136. This method facilitates the replacement of the cylindrical saw blade 136. If the cylindrical saw blade 136 is damaged during use, only need to cut off the power supply of the second electromagnet 132, and the damaged cylindrical saw blade 136 will automatically fall off. Then, repeat the above steps for the new cylindrical saw blade 136 to complete the installation. At the same time, according to the length of different cylindrical saw blades 136, the adjustment motor 122 can be controlled for adjustment. The output shaft of the adjustment motor 122 drives the adjustment screw rod 121 to rotate, and the adjustment screw rod 121 drives one of the extension arm beams 123 to slide on the adjustment frame 119. At this time, the distance between the two extension arm beams 123 will change, so as to adapt to different lengths of cylindrical saw blades 136 (such as when the thickness of the board changes).

[0029] Intermittently activate the first electromagnet 115. The first electromagnet 115 generates a magnetic force to repel the first permanent magnet 117. The first permanent magnet 117 moves in a direction away from the first electromagnet 115. At this time, the reset elastic spring 120 is compressed. The first permanent magnet 117 and the synchronous sliding support plate 118 slide on the adjustment frame movement guide rod 137. At this time, the synchronous sliding support plate 118 will drive the adjustment frame 119 to move synchronously. The two extension arm beams 123 on the adjustment frame 119 will also move synchronously. Therefore, the cylindrical saw blade 136 will move synchronously. When the first electromagnet 115 is powered off, the first permanent magnet 117 and the synchronous sliding support plate 118 will reset under the elastic force of the reset elastic spring 120 and move in a direction close to the first electromagnet 115. At this time, the provided shock-absorbing rubber pad 116 can reduce the collision force between the first permanent magnet 117 and the first electromagnet 115. During this process, the cylindrical saw blade 136 makes a reciprocating linear motion, and then a relative motion will occur with the plate, thereby cutting the plate (the surface of the cylindrical saw blade 136 is provided with saw teeth, and a number of barbs are evenly arranged on one cylindrical surface). At this time, only by moving the plate can a relative motion occur with the cylindrical saw blade 136, thereby realizing the feeding and cutting of the plate by the cylindrical saw blade 136. The movement of the plate requires synchronous control of four feeding electric cylinders 104. The telescopic rods of the two feeding electric cylinders 104 on one side expand and contract synchronously, and the telescopic rods of the two feeding electric cylinders 104 on the other side contract synchronously, so as to control the movement of the plate along the direction of the telescopic rods of the feeding electric cylinders 104. Control the feeding servo motor 105. The output shaft of the feeding servo motor 105 drives the internal feeding lead screw 107 to rotate. The internal feeding lead screw 107 drives the internal feeding frame 109 to slide along the internal guide slide rod 108, thereby driving the plate to move synchronously. At the same time, the direction of the telescopic rod of the feeding electric cylinder 104 is perpendicular to the axial directions of the internal feeding lead screw 107 and the internal guide slide rod 108. Therefore, the feeding of the plate in two directions on the support sliding platform plate 113 can be realized, and cutting of different shapes can be achieved.

Claims

1. A raw material cutting device for a hard luggage case, characterized in that: It includes a base plate (101), on which a feeding part is fixedly installed overhead through a frame (102), and the feeding part can clamp and fix the plate to be cut. A C-shaped frame (114) is also fixedly installed on the base plate (101), and a driving part is movably installed on the C-shaped frame (114). The driving part includes two symmetrically arranged extended arm beams (123), and the two extended arm beams (123) are respectively arranged on the upper and lower sides of the feeding part. A clamping frame (124) is fixedly installed at the end of each extended arm beam (123). Two clamping heads (129) for fixing the ends of the cylindrical saw blade (136) are arranged inside the clamping frame (124). Each clamping head (129) is slidably arranged on the clamping frame (124) through two clamping and pressing slide rods (126). A guiding through-hole (125) is also formed on the extended arm beam (123), and the cylindrical saw blade (136) can penetrate through the guiding through-hole (125).

2. The raw material cutting device for a hard luggage according to claim 1, characterized in that: The clamping and pressing slide rod (126) is fixedly matched with the clamping head (129), and the clamping and pressing slide rod (126) is slidably matched with the clamping frame (124). A fixed slider (127) is fixedly installed at the end of the clamping and pressing slide rod (126) away from the clamping head (129), and a sliding pin (131) is fixedly arranged on the fixed slider (127).

3. The raw material cutting device for a hard case according to claim 2, characterized in that: A clamping turntable bracket (135) is fixedly installed on the clamping frame (124), and a clamping turntable (128) is rotatably installed on the clamping frame (124) through the clamping turntable bracket (135). Two inclined chutes (130) are formed on the clamping turntable (128), and the two chutes (130) are symmetrically arranged about the center origin of the clamping turntable (128). The sliding pin (131) is slidably arranged inside the chute (130).

4. The raw material cutting equipment for a hard luggage according to claim 3, characterized in that: A second electromagnet bracket (134) is fixedly installed on the clamping turntable bracket (135), a second electromagnet (132) is fixedly installed on the second electromagnet bracket (134), and a second permanent magnet (133) magnetically matched with the second electromagnet (132) is fixedly installed on the clamping turntable (128) to drive the clamping turntable (128) to rotate on the clamping turntable bracket (135).

5. The raw material cutting device for a hard luggage according to claim 4, characterized in that: The driving part also includes an adjusting frame (119), an adjusting screw rod (121) is rotatably installed on the adjusting frame (119), an adjusting motor (122) is fixedly installed on the adjusting frame (119), and the adjusting screw rod (121) is fixedly installed on the output shaft of the adjusting motor (122). One of the extended arm beams (123) located under the feeding part is fixedly matched with the adjusting frame (119) and is also rotatably matched with the adjusting screw rod (121); one of the extended arm beams (123) located above the feeding part is slidably matched with the adjusting frame (119) and is in threaded transmission with the adjusting screw rod (121) to adjust the distance between the two extended arm beams (123).

6. The raw material cutting device for a hard luggage according to claim 5, characterized in that: A synchronous sliding support plate (118) is fixedly installed in the middle of the adjusting frame (119). The synchronous sliding support plate (118) is slidably arranged on the movement guiding rod (137) of the adjusting frame. A first permanent magnet (117) that is slidably matched with the movement guiding rod (137) of the adjusting frame is fixedly installed on the upper surface of the synchronous sliding support plate (118). A damping rubber pad (116) is in contact with the upper surface of the first permanent magnet (117). The damping rubber pad (116) is fixedly installed on the first electromagnet (115). The first electromagnet (115) and the circular saw blade (136) are both fixedly installed on the C-shaped frame (114).

7. A raw material cutting device for a hard luggage case according to claim 6, characterized in that: A reset elastic spring (120) is further arranged on the lower surface of the synchronous sliding support plate (118). The two ends of the reset elastic spring (120) are fixedly matched with the bottom end of the C-shaped frame (114) and the synchronous sliding support plate (118). The magnetic force between the first electromagnet (115) and the first permanent magnet (117) is used to drive the relative movement between the circular saw blade (136) and the plate.

8. The raw material cutting equipment for a hard-sided luggage according to claim 7, characterized in that: The feeding part includes an edge strengthening bottom plate (103) and a supporting sliding platform plate (113) fixedly installed on the machine frame (102). The supporting sliding platform plate (113) is arranged at the inner side of the edge strengthening bottom plate (103). An internal feeding frame (109) is slidably arranged on the upper surface of the supporting sliding platform plate (113). Clamping strips (112) are slidably arranged on the four sides of the internal feeding frame (109) through two parallel clamping guiding rods (110). The clamping guiding rods (110) are slidably matched with the internal feeding frame (109), and the clamping strips (112) are fixedly matched with the clamping guiding rods (110). The same number of fixing screws (111) as the clamping guiding rods (110) are also threadedly arranged on the internal feeding frame (109). The fixing screws (111) are used to fix the positions of the clamping guiding rods (110) on the internal feeding frame (109). The positions of the plate are jointly defined by the four clamping strips (112).

9. The raw material cutting device for a hard luggage case according to claim 8, characterized in that: An external feeding frame (106) is arranged outside the internal feeding frame (109). An internal guiding slide bar (108) is fixedly installed on the external feeding frame (106). An internal feeding lead screw (107) that is parallel to the internal guiding slide bar (108) is rotatably installed on the external feeding frame (106). A feeding servo motor (105) for driving the rotation of the internal feeding lead screw (107) is fixedly installed on the external feeding frame (106).

10. The raw material cutting device for a hard luggage according to claim 9, wherein: Four feeding electric cylinders (104) are fixedly installed on the edge strengthening bottom plate (103). The four feeding electric cylinders (104) are symmetrically arranged at the four corners of the edge strengthening bottom plate (103). The end parts of the expansion rods of the four feeding electric cylinders (104) are fixedly matched with the external feeding frame (106).

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