Blank cutting device for keycap injection molding production

Abstract

The invention discloses a blank shearing device for keycap injection molding production. The blank shearing device comprises a support, a mounting barrel is connected to the support, an air cylinder is mounted at the top of the mounting barrel, a telescopic rod of the air cylinder penetrates into the mounting barrel and is connected with a mounting frame, rotating shafts are rotationally connected to the top in the mounting frame at intervals, and cutting blades are connected to the rotating shafts at intervals in the axial direction. The multiple cutting blades move downwards at the same time so that the joints of the multiple trapezoidal keycaps and the blank can be cut off at a time, and when the cutting blades move downwards along the inclined side faces of the trapezoidal keycaps to cut the blank, the cutting blades can be extruded by the inclined side faces of the trapezoidal keycaps to swing so that the cutting blades can be attached to the inclined side faces of the trapezoidal keycaps all the time; therefore, the joint of the trapezoidal keycap and the blank can be accurately sheared, shearing residues can be avoided, and the trapezoidal keycap can be prevented from being damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of key cap production, in particular to a blank shearing device for key cap injection molding production. Background Art

[0002] The keycap is the top covering of each key on the keyboard. Its main function is to protect the keys and indicate the function or letter and number symbols of each key. Since the trapezoidal design of the keycap helps to ensure the stability and comfort of finger placement, the part of the keycap that contacts the finger is perpendicular to the key, so the keycaps of mechanical keyboards are mostly trapezoidal.

[0003] The trapezoidal keycaps of mechanical keyboards are injection molded by injection molding machines. Since the keycaps are small and numerous, they are usually connected by blanks for the convenience of injection molding and taking, so that the subsequent robot can take out multiple keycaps from the mold together. Blanks are usually wasted materials and they are not part of the final product, so a shearing tool is needed to cut the connection between the blank and the keycap to separate the blank from the keycap so that multiple keycaps can be separated.

[0004] Currently, the keycaps are separated by manually cutting the connection between the blank and the trapezoidal keycaps with hand-held scissors. However, the method of manually cutting the connection between the trapezoidal keycaps and the blank one by one is slow, inefficient, and labor-intensive. In addition, due to the irregular shape of the trapezoidal keycaps, it is difficult to accurately align and fix them with scissors, which may cause the scissors to cut at uneven angles and depths, resulting in shear residue or damage to the keycaps. Summary of the invention

[0005] The purpose of the present invention is to provide a blank shearing device for keycap injection molding production, which can cut off the connection between multiple trapezoidal keycaps and blanks at one time, avoid shear residue, and avoid damaging the trapezoidal keycaps in order to solve the above problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical scheme: a blank cutting device for keycap injection molding production, comprising a bracket, a mounting tube connected to the bracket, a discharge port opened on the side wall of the mounting tube, a discharge port opened at the bottom of the mounting tube, an electric rotating frame arranged on the mounting tube, four placement plates connected to the electric rotating frame at intervals, the four placement plates are distributed in an annular shape and are located in the mounting tube, a through hole for blank insertion is opened in the middle of the placement plate, a cylinder is installed on the top of the mounting tube, a telescopic rod of the cylinder penetrates into the mounting tube and is connected to a mounting frame, a rotating shaft is rotatably connected to the top of the mounting frame at intervals, and the upper axis of the rotating shaft is along the axis A cutting blade is connected to the interval, and when the cutting blade moves down along the oblique side of the trapezoidal keycap to cut the blank, it is squeezed by the oblique side of the trapezoidal keycap and swings to keep in contact with the oblique side of the trapezoidal keycap, and the front and rear sides of the placement plate are both slidably connected with clamps, and a spring A is connected between the clamp and the placement plate, and the front and rear sides of the installation cylinder are both connected with push plates. When the electric rotating frame drives the placement plate to rotate and transports the trapezoidal keycap to the bottom of the cutting blade, the placement plate drives the clamp to rotate and contact with the push plate, and the push plate squeezes the clamp to move in the direction close to the trapezoidal keycap to correct and clamp the trapezoidal keycap.

[0007] Preferably, it also includes a swing block connected to the rotating shaft, the swing block is slidably connected to a ring rod, the ring rod is fixedly connected to the mounting frame, the ring rod is slidably connected to a sliding sleeve, the ring rod is sleeved with a spring B, the spring B is connected to the sliding sleeve and the mounting frame, the cutting blade swings to drive the swing block to swing through the rotating shaft, the swinging of the swing block can contact the sliding sleeve, and push the sliding sleeve to slide along the ring rod to deform the spring B, and the elastic force of the spring B can keep the cutting blade close to the inclined side of the trapezoidal key cap during the process of moving down to cut the blank.

[0008] Preferably, it also includes a sliding rod vertically slidably connected to the installation frame, the bottom end of the sliding rod is connected to an inverted U-shaped pressing block for pressing the blank, and a spring C is connected between the inverted U-shaped pressing block and the installation frame.

[0009] Preferably, the clamp includes a T-shaped clamp plate slidably connected to the placement plate, a connecting plate is connected to the T-shaped clamp plate, a spring A is connected between the connecting plate and the placement plate, a trapezoidal block is connected to the connecting plate, and when the placement plate rotates to transport the trapezoidal keycap to the bottom of the cutting blade, the trapezoidal block is driven to rotate and contact the push plate.

[0010] Preferably, the electric rotating frame includes a rotating rod rotatably connected to the mounting tube, a cross is connected to the rotating rod, the cross is located in the mounting tube, four placement plates are distributed in a ring shape and connected to the cross, a stepper motor is installed on the outer wall of the mounting tube, and the output shaft of the stepper motor is connected to the rotating rod.

[0011] Preferably, it also includes a ring rotatably connected to the rotating rod, and an inverted triangle block is connected to the ring. When the placement plate rotates to transport the cut blank to the lower side, the cut blank is squeezed downward by the inclined surface of the inverted triangle block.

[0012] Preferably, it also includes a material receiving frame and a slotted baffle. The bottom of the mounting tube is connected to a material receiving frame with an open top and bottom. A slotted baffle for separating the blank and the keycap is obliquely installed in the material receiving frame. The side wall of the material receiving frame is provided with an outlet for the blank to slide out.

[0013] Preferably, it also includes a baffle plate arranged at the outlet of the receiving frame, the baffle plate is used to block the key caps, and the receiving frame is provided with a height adjustment component for adjusting the height of the baffle plate.

[0014] Preferably, the height adjustment assembly includes a guide sleeve connected to the material receiving frame, an n-shaped plate capable of being raised and lowered is arranged in the guide sleeve, the n-shaped plate is connected to the baffle, and a fastening bolt for locking the n-shaped plate is threadedly connected to the guide sleeve.

[0015] Preferably, it also includes a material guide hopper connected to the bottom of the material receiving frame, and the material guide hopper is used to guide the key caps.

[0016] The beneficial effects of the present invention are: 1. The present invention can cut off the connection between multiple trapezoidal keycaps and blanks at one time by moving multiple cutting blades downward at the same time, and the cutting blades can be squeezed and swung by the oblique side surfaces of the trapezoidal keycaps when moving downward along the oblique side surfaces of the trapezoidal keycaps to cut the blanks, so as to keep fitting with the oblique side surfaces of the trapezoidal keycaps, thereby being able to accurately shear the connection between the trapezoidal keycaps and the blanks, thereby being able to avoid shearing residues and damage to the trapezoidal keycaps.

[0017] 2. The present invention cooperates with the swing block, the sliding sleeve and the spring B, so that the cutting blade can always keep in close contact with the inclined side surface of the trapezoidal keycap during the process of moving down to cut the blank, so as to avoid the cutting blade being squeezed by the blank and swinging upward and slipping when moving down to cut the blank, thereby being able to more accurately shear the connection between the trapezoidal keycap and the blank, thereby improving the shearing effect.

[0018] 3. The present invention can press and fix the blank on the placement plate through the cooperation of the spring C and the inverted U-shaped pressure block to avoid the movement of the blank when shearing the connection between the trapezoidal keycap and the blank, so that the connection between the trapezoidal keycap and the blank can be sheared more accurately, thereby further improving the shearing effect.

[0019] 4. The present invention can squeeze the cut blank downward through the inverted triangle block to prevent the cut blank from being stuck in the through hole on the placement plate, thereby preventing the cut blank from staying on the placement plate.

[0020] 5. The present invention can separate the blank and the keycap by means of the slotted baffle plate to prevent the blank and the keycap from mixing and falling.

[0021] 6. The present invention can stop the keycaps by means of a height-adjustable baffle plate to prevent the keycaps from sliding along the slotted baffle plate and mixing with the blanks, thereby ensuring that the blanks and the keycaps are completely separated and improving the separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the partial three-dimensional structure of the present invention Figure 1 .

[0024] Figure 3 It is a schematic diagram of the partial three-dimensional structure of the present invention Figure 2 .

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamp and the push plate of the present invention.

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the electric rotating frame of the present invention.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the circular ring and the inverted triangle block of the present invention.

[0028] Figure 7 The figure is a schematic diagram of the installation of the material receiving frame, guide sleeve, guide hopper and other components of the present invention.

[0029] Figure 8 It is a three-dimensional structural schematic diagram of the material connection frame, slotted baffle plate, baffle plate and other components of the present invention.

[0030] In the figure: 1-bracket, 2-mounting cylinder, 3-electric rotating frame, 31-rotating rod, 32-cross, 33-stepping motor, 4-placing plate, 5-cylinder, 6-mounting frame, 7-rotating shaft, 8-cutting blade, 9-clamp, 91-T-shaped clamp, 92-connecting plate, 93-trapezoidal block, 10-spring A, 11-push plate, 12-swing block, 13-ring rod, 14-sliding sleeve, 15-spring B, 16-sliding rod, 17-inverted U-shaped pressure block, 18-spring C, 19-circular ring, 20-inverted triangle block, 21-material receiving frame, 22-slotted baffle, 23-guide sleeve, 24-n-shaped plate, 25-fastening bolt, 26-baffle, 27-guide hopper, 200-trapezoidal keycap, 201-blank. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0032] Embodiment: A blank shearing device for keycap injection molding production, see Figure 1-Figure 2 , including a bracket 1, a mounting cylinder 2 is connected to the bracket 1, a discharge port is opened on the left side of the mounting cylinder 2, a discharge port is opened at the bottom of the mounting cylinder 2, an electric rotating frame 3 is provided on the mounting cylinder 2, four placement plates 4 are connected at intervals on the electric rotating frame 3, the four placement plates 4 are distributed in an annular manner and are located in the mounting cylinder 2, a through hole is opened in the middle of the placement plate 4 for inserting the blank 201, a cylinder 5 is installed on the top of the mounting cylinder 2, the telescopic rod of the cylinder 5 penetrates into the mounting cylinder 2 and is connected to the mounting frame 6, four rotating shafts 7 are connected to the top of the mounting frame 6 from front to back, and the left and right ends of the rotating shaft 7 extend out of the mounting frame 6, and four cutting blades 8 are connected to the rotating shaft 7 along the axial direction, two clamps 9 are slidably connected to the front and rear sides of the placement plate 4, a spring A10 is connected between the clamp 9 and the placement plate 4, and the upper part of the inner wall on the front and rear sides of the mounting cylinder 2 is connected to a push plate 11, and the placement plate 4 drives the clamp 9 to rotate upward to contact the push plate 11.

[0033] The trapezoidal keycap 200 can be placed into the placement plate 4 through the discharge port on the left side of the installation tube 2, and the blank 201 is inserted into the through hole in the middle of the placement plate 4, and then the electric rotating frame 3 is controlled to drive the placement plate 4 to rotate ninety degrees to transport the trapezoidal keycap 200 to the bottom of the cutting blade 8. The placement plate 4 rotates to transport the trapezoidal keycap 200 to the bottom of the cutting blade 8 and drives the clamp 9 to rotate upward to contact the push plate 11. The push plate 11 squeezes the clamp 9 to move in the direction close to the trapezoidal keycap 200 to correct and clamp the trapezoidal keycap 200, and the spring A10 is compressed accordingly. Then the cylinder 5 is controlled to work to make the installation frame 6 move downward and upward. The installation frame 6 moves downward and drives the cutting blade 8 along the oblique side of the trapezoidal keycap 200 through the rotating shaft 7. The cutting blade 8 moves downward to cut off the connection between the trapezoidal keycap 200 and the blank 201, and because the cutting blade 8 is movably connected via the rotating shaft 7, the cutting blade 8 can be squeezed and swung by the oblique side surface of the trapezoidal keycap 200 when it moves downward along the oblique side surface of the trapezoidal keycap 200 to cut the blank 201, so as to keep fitting with the oblique side surface of the trapezoidal keycap 200, so that the connection between the trapezoidal keycap 200 and the blank 201 can be accurately sheared, thereby avoiding shear residue and damaging the trapezoidal keycap 200; and the cutting blade 8 is squeezed and swung upward by the oblique side surface of the trapezoidal keycap 200, so when the cutting blade 8 moves upward and separates from the trapezoidal keycap 200, under the action of gravity, the cutting blade 8 will swing downward by itself to restore its original state. After the installation frame 6 moves upward and resets, the electric rotating frame 3 is controlled again to drive the placement plate 4 to rotate ninety degrees, so as to transport the sheared trapezoidal keycap 200 and blank 201 downward, and transport the trapezoidal keycap 200 and blank 201 that need to be sheared upward. The placement plate 4 rotates downward to transport the trapezoidal keycap 200 downward and drives the clamp 9 to rotate downward and disengage from the push plate 11. Under the reset action of the spring A10, the clamp 9 moves away from the trapezoidal keycap 200 to release the trapezoidal keycap 200. In the process of transporting the cut and separated keycap and blank 201 downward, the placement plate 4 pours out the keycap and blank 201 downward, and the poured keycap and blank 201 can slide out from the discharge port at the bottom of the installation tube 2.

[0034] See also Figure 3 In the present invention, it also includes a swing block 12, a ring rod 13, a sliding sleeve 14 and a spring B15. The left and right ends of the rotating shaft 7 are connected with the swing block 12. The swing block 12 is slidably connected with the ring rod 13. The ring rod 13 is fixedly connected to the mounting frame 6. The sliding sleeve 14 is slidably connected to the ring rod 13. The sliding sleeve 14 is located on the lower side of the swing block 12. The ring rod 13 is covered with a spring B15, and the spring B15 is connected to the sliding sleeve 14 and the mounting frame 6.

[0035] When the cutting blade 8 is squeezed by the oblique side of the trapezoidal keycap 200 and swings upward, the swing block 12 is driven to swing downward through the rotating shaft 7. The swing block 12 swings downward to contact the sliding sleeve 14 and pushes the sliding sleeve 14 to slide along the ring rod 13 to compress the spring B15. The elastic force of the spring B15 is used to keep the cutting blade 8 in close contact with the oblique side of the trapezoidal keycap 200 during the process of moving downward to cut the blank 201, so as to avoid the cutting blade 8 being squeezed by the blank 201 and swinging upward to slip when moving downward to cut the blank 201, so that the connection between the trapezoidal keycap 200 and the blank 201 can be sheared more accurately, thereby improving the shearing effect.

[0036] See also Figure 3 In the present invention, it also includes two slide bars 16 vertically slidably connected to the mounting frame 6. The two slide bars 16 are symmetrically arranged, one on the left and one on the right. An inverted U-shaped pressure block 17 is connected to the bottom end of the slide bar 16. A spring C18 is sleeved on the slide bar 16. The spring C18 is connected to the inverted U-shaped pressure block 17 and the mounting frame 6.

[0037] The installation frame 6 moves downward and pushes the inverted U-shaped pressure block 17 to move downward and contact the blank 201 through the spring C18. When the inverted U-shaped pressure block 17 moves downward and contacts the blank 201, the inverted U-shaped pressure block 17 cannot continue to move downward, so that the installation frame 6 continues to move downward to compress the spring C18. In this way, the blank 201 can be pressed and fixed on the placement plate 4 through the cooperation of the spring C18 and the inverted U-shaped pressure block 17, so as to avoid the movement of the blank 201 when the connection between the trapezoidal keycap 200 and the blank 201 is sheared, so that the connection between the trapezoidal keycap 200 and the blank 201 can be sheared more accurately, thereby further improving the shearing effect.

[0038] See also Figure 4 In the present invention, the clamp 9 is composed of two T-shaped clamps 91, a connecting plate 92 and a trapezoidal block 93. The two T-shaped clamps 91 are slidably connected to the placement plate 4, the connecting plate 92 is connected to the two T-shaped clamps 91, the trapezoidal block 93 is connected to the side of the connecting plate 92 facing away from the placement plate 4, the spring A10 is connected between the connecting plate 92 and the placement plate 4, and the placement plate 4 drives the trapezoidal block 93 to rotate upward so that it can contact the push plate 11.

[0039] When the placement plate 4 rotates upward to transport the trapezoidal keycap 200 to the bottom of the cutting blade 8, the T-shaped clamp 91, the connecting plate 92 and the trapezoidal block 93 are driven to rotate upward so that the trapezoidal block 93 contacts the push plate 11, and the push plate 11 squeezes the inclined surface on the trapezoidal block 93 so that the trapezoidal block 93 pushes the connecting plate 92 to move toward the placement plate 4, and the spring A10 is compressed accordingly, thereby pushing the T-shaped clamp 91 to move toward the trapezoidal keycap 200 to correct and clamp the trapezoidal keycap 200; and when the placement plate 4 rotates downward to transport the trapezoidal keycap 200 downward, the trapezoidal block 93 is driven to rotate downward and disengage from the push plate 11, and under the resetting action of the spring A10, the connecting plate 92 drives the T-shaped clamp 91 to move away from the trapezoidal keycap 200 to release the trapezoidal keycap 200.

[0040] See also Figure 5 In the present invention, the electric rotating frame 3 includes a rotating rod 31 rotatably connected to the middle part of the mounting tube 2, and two crosses 32 are symmetrically connected to the rotating rod 31 in the front and rear directions. The cross 32 is located in the mounting tube 2, and four placement plates 4 are distributed in a ring shape and connected to the cross 32. A stepper motor 33 is installed on the outer wall of the rear side of the mounting tube 2, and the output shaft of the stepper motor 33 is connected to the rotating rod 31.

[0041] By controlling the stepper motor 33 to drive the rotating rod 31 to rotate intermittently by ninety degrees, the cross 32 can drive the placement plate 4 to rotate intermittently by ninety degrees, so as to transport the trapezoidal keycap 200 and the blank 201 that need to be sheared to the bottom of the cutting blade 8 for shearing, and transport the sheared trapezoidal keycap 200 and the blank 201 downward, so that the shearing work can be carried out continuously, thereby improving work efficiency.

[0042] See also Figure 6 In the present invention, it also includes a circular ring 19 and an inverted triangular block 20. The middle part of the rotating rod 31 is rotatably connected with the circular ring 19, and the inverted triangular block 20 is connected to the circular ring 19.

[0043] The placement plate 4 rotates downward, driving the cut and separated keycaps and blanks 201 thereon to rotate downward, so as to pour the cut and separated keycaps and blanks 201 downward. In the process of the placement plate 4 rotating to transport the cut blanks 201 to the lower side, the cut blanks 201 are squeezed downward by the inclined surface on the inverted triangle block 20 to avoid the cut blanks 201 being stuck in the through holes on the placement plate 4, thereby preventing the cut blanks 201 from staying on the placement plate 4.

[0044] See also Figure 7-Figure 8In the present invention, it also includes a material receiving frame 21 and a slotted baffle 22. The bottom of the mounting tube 2 is connected to the material receiving frame 21 with an open top and bottom. The slotted baffle 22 is installed in the material receiving frame 21, and the slotted baffle 22 is installed in an inclined manner with the left side higher and the right side lower. The right side wall of the material receiving frame 21 is provided with an outlet for the blank 201 to slide out.

[0045] The placing plate 4 drives the cut and separated keycaps and blanks 201 thereon to rotate downward, so as to pour the cut and separated keycaps and blanks 201 into the receiving frame 21, and the keycaps can directly fall through the grooves on the slotted baffle plate 22, while the blanks 201 are blocked by the slotted baffle plate 22 to prevent the blanks 201 from falling with the keycaps, so that the blanks 201 and the keycaps can be separated; since the slotted baffle plate 22 is installed with the left side higher and the right side lower inclined, the blanks 201 can slide to the right along the slotted baffle plate 22 by themselves.

[0046] See also Figure 7-Figure 8 In the present invention, a height adjustment component and a baffle 26 are also included. The right outer wall of the material receiving frame 21 is provided with a height adjustment component. The height adjustment component includes a guide sleeve 23, an n-shaped plate 24 and a fastening bolt 25. The two guide sleeves 23 are symmetrically connected to the right outer wall of the material receiving frame 21 in a front-to-back manner. The n-shaped plate 24 is slidably connected in the two guide sleeves 23. The right side of the guide sleeve 23 is threadedly connected with the fastening bolt 25. The bottom of the n-shaped plate 24 is connected with a baffle 26, and the baffle 26 is located at the outlet of the material receiving frame 21.

[0047] The baffle 26 can be adjusted to a suitable height according to the height of the keycap. When the height of the baffle 26 needs to be adjusted, loosen the fastening bolts 25 to release the lock on the n-shaped plate 24, and then move the baffle 26 upward to move the baffle 26 up to a position where it can block the keycap but not the blank 201. Then tighten the fastening bolts 25 to re-lock the n-shaped plate 24, thereby locking the baffle 26. In this way, the keycap can be blocked by the baffle 26 to prevent the keycap from sliding to the right along the slotted baffle 22 and mixing with the blank 201, thereby ensuring that the blank 201 and the keycap are completely separated, thereby improving the separation effect.

[0048] See also Figure 7-Figure 8 , and also includes a guide hopper 27 connected to the bottom of the receiving frame 21, through which the key caps can be guided to facilitate collection of the key caps.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A blank shearing device for keycap injection molding production, characterized in that: The invention comprises a bracket (1), the bracket (1) is connected to a mounting tube (2), a material discharge port is formed on a side wall of the mounting tube (2), a material discharge port is formed on the bottom of the mounting tube (2), an electric rotating frame (3) is provided on the mounting tube (2), four placement plates (4) are connected to the electric rotating frame (3) at intervals, the four placement plates (4) are distributed in an annular shape and are located in the mounting tube (2), a through hole is formed in the middle of the placement plates (4) for inserting a blank (201), a cylinder (5) is installed on the top of the mounting tube (2), a telescopic rod of the cylinder (5) penetrates into the mounting tube (2) and is connected to a mounting frame (6), a rotating shaft (7) is rotatably connected to the top of the mounting frame (6), a cutting blade (8) is connected to the rotating shaft (7) at intervals along the axial direction, and the cutting blade (8) is arranged along the trapezoidal key cap (200 ) is squeezed by the oblique side of the trapezoidal keycap (200) to swing when the oblique side of the placement plate (4) moves downward to cut the blank (201), so as to keep in contact with the oblique side of the trapezoidal keycap (200). The front and rear sides of the placement plate (4) are both slidably connected with a clamp (9), a spring A (10) is connected between the clamp (9) and the placement plate (4), and the front and rear sides of the installation tube (2) are both connected with a push plate (11). When the electric rotating frame (3) drives the placement plate (4) to rotate and transport the trapezoidal keycap (200) to the bottom of the cutting blade (8), the placement plate (4) drives the clamp (9) to rotate and contact with the push plate (11), and the clamp (9) is squeezed by the push plate (11) to move in a direction close to the trapezoidal keycap (200) to correct and clamp the trapezoidal keycap (200).

2. A blank shearing device for keycap injection molding production according to claim 1, characterized in that: The invention also comprises a swing block (12) connected to the rotating shaft (7), a ring rod (13) being slidably connected to the swing block (12), the ring rod (13) being fixedly connected to the mounting frame (6), a sliding sleeve (14) being slidably connected to the ring rod (13), a spring B (15) being sleeved on the ring rod (13), the spring B (15) being connected to the sliding sleeve (14) and the mounting frame (6), the cutting blade (8) swinging through the rotating shaft (7) drives the swing block (12) to swing, the swing block (12) swinging can contact the sliding sleeve (14), and push the sliding sleeve (14) to slide along the ring rod (13) to deform the spring B (15), and the elastic force of the spring B (15) enables the cutting blade (8) to always keep in close contact with the oblique side surface of the trapezoidal key cap (200) during the process of moving down to cut the blank (201).

3. A blank cutting device for keycap injection molding production according to claim 2, characterized in that: It also includes a slide bar (16) vertically slidably connected to the mounting frame (6), the bottom end of the slide bar (16) is connected to an inverted U-shaped pressing block (17) for pressing the blank (201), and a spring C (18) is connected between the inverted U-shaped pressing block (17) and the mounting frame (6).

4. A blank shearing device for keycap injection molding production according to claim 3, characterized in that: The clamp (9) comprises a T-shaped clamp (91) slidably connected to the placement plate (4), a connecting plate (92) being connected to the T-shaped clamp (91), a spring A (10) being connected between the connecting plate (92) and the placement plate (4), a trapezoidal block (93) being connected to the connecting plate (92), and when the placement plate (4) rotates to transport the trapezoidal keycap (200) to the bottom of the cutting blade (8), the trapezoidal block (93) is driven to rotate and contact the push plate (11).

5. A blank cutting device for keycap injection molding production according to claim 4, characterized in that: The electric rotating frame (3) comprises a rotating rod (31) rotatably connected to the mounting tube (2), a cross (32) being connected to the rotating rod (31), the cross (32) being located in the mounting tube (2), four placement plates (4) being connected to the cross (32) in an annular arrangement, a stepping motor (33) being installed on the outer wall of the mounting tube (2), and an output shaft of the stepping motor (33) being connected to the rotating rod (31).

6. A blank cutting device for keycap injection molding production according to claim 5, characterized in that: It also includes a ring (19) rotatably connected to the rotating rod (31), and an inverted triangle block (20) is connected to the ring (19). When the placement plate (4) rotates to transport the cut blank (201) to the lower side, the cut blank (201) is squeezed downward by the inclined surface on the inverted triangle block (20).

7. A blank cutting device for keycap injection molding production according to claim 6, characterized in that: The invention also comprises a material receiving frame (21) and a slotted baffle (22). The bottom of the mounting tube (2) is connected to the material receiving frame (21) with the top and bottom both being open. The slotted baffle (22) for separating the blank (201) and the key cap is obliquely installed in the material receiving frame (21). The side wall of the material receiving frame (21) is provided with an outlet for the blank (201) to slide out.

8. A blank cutting device for keycap injection molding production according to claim 7, characterized in that: It also includes a baffle (26) arranged at the outlet of the material receiving frame (21), the baffle (26) being used to block the key caps, and a height adjustment component for adjusting the height of the baffle (26) is provided on the material receiving frame (21).

9. A blank shearing device for keycap injection molding production according to claim 8, characterized in that: The height adjustment assembly comprises a guide sleeve (23) connected to the material receiving frame (21), an n-shaped plate (24) capable of being raised and lowered is arranged in the guide sleeve (23), the n-shaped plate (24) is connected to the baffle plate (26), and a fastening bolt (25) for locking the n-shaped plate (24) is threadedly connected to the guide sleeve (23).

10. A blank shearing device for keycap injection molding production according to claim 9, characterized in that: It also includes a material guide hopper (27) connected to the bottom of the material receiving frame (21), and the material guide hopper (27) is used to guide the key caps.

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