Strapping Machine

Abstract

The present invention discloses a strapping machine which relates to the technical field of agricultural production strapping tools, and comprises: a middle frame formed in a straight line, which can pull out a strap from the front end; a bow frame, which is installed to be rotatable relative to the middle frame; a strap clamping mechanism, which is installed at the front end of the bow frame and can clamp the end of the strap; a binding mechanism, which comprises a needle groove hinged on the middle frame at the rear end, a needle mold installed at the front end of the bow frame, and a pin plate fixed at the front end of the middle frame and corresponding to the needle groove and the needle mold; a cutting knife, which is installed at the front of the middle frame and is arranged parallel to the pin plate; the strapping machine is characterized in that the belt clamping mechanism has a support plate, a clamping plate, a reset rod, and a firing rod, the clamping plate and the firing rod are rotatably installed, and the front end of the clamping plate matches the front end of the support plate.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural production bundling tools, in particular to a bundling machine. Background Art

[0002] When planting crops such as tomatoes, grapes, and kiwis, we usually need to fix the vines or branches of the plants on bamboo racks or wires to guide their growth or assist in fruiting, thereby increasing crop yield and quality.

[0003] The traditional solution is to use ropes or cloth strips to tie them one by one. This method is inefficient and easily damages the plants, and cannot meet the needs of large-scale planting and production. Currently, tying machines (also called branch tying machines) are commonly used to tie and fix the plants.

[0004] For example, the Chinese invention patent with the authorization announcement number CN211210728U discloses a branch binding machine, which mainly includes a binding strap clamping device, a bow frame, a handle, a frame, a needle box, and a binding strap box. It is characterized in that the binding strap clamping device comprises a machine box, a positioning plate, a pressing strap needle, and a forming anvil; the positioning plate is hinged in the machine box cavity, and a spring is provided on the positioning plate to make it have a tendency to rotate in the counterclockwise direction; the pressing strap needle is hinged in the machine box cavity, and a torsion spring is also provided on the pressing strap needle to make it have a tendency to rotate in the counterclockwise direction; the positioning plate matches the pressing strap needle; and a collision block is also provided on the frame, and the collision block matches the pressing strap needle.

[0005] Its advantages are: simple structure, high degree of automation, labor-saving and light, the blade is not easy to be damaged and is firmly fixed and easy to replace, and it can avoid damaging the crop branches during the branch tying operation.

[0006] The disadvantage is that during the rotation of the belt pressing needle, the belt pressing needle and the positioning plate are always in contact and there are relative position changes and friction at the same time. The belt pressing needle and the positioning plate are easy to wear. Since the force for the belt pressing needle to overcome the force of the second spring and maintain the preset position is provided by the friction between the positioning plate and the clamping plate, when the wear reaches a certain extent, the clamping plate cannot be maintained in the preset position, thereby affecting the stability of the belt clamping mechanism function, and further causing the branch binding machine to be unable to be used normally.

[0007] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a strapping machine, in which, during use, the related parts of the clamping mechanism wear more slowly, have better stability and longer service life. Summary of the invention

[0008] In order to achieve the above object, the present invention discloses a strapping machine, which has the following characteristics:

[0009] (1) A middle frame formed in a straight line, capable of pulling out a belt from the front end; a bow frame installed to be rotatable relative to the middle frame; a belt clamping mechanism installed at the front end of the bow frame, capable of clamping the end of the belt; a binding mechanism, including a needle groove hinged to the middle frame at the rear end, a needle mold installed at the front end of the bow frame, and a pin plate fixed at the front end of the middle frame and corresponding to the needle groove and the needle mold; a cutter installed at the front of the middle frame and arranged parallel to the pin plate; the belt clamping mechanism has a support plate, a clamping plate, a reset plate, and a firing rod, the clamping plate and the firing rod are rotatably installed, and the front end of the clamping plate matches the front end of the support plate.

[0010] (2) In addition to the features described in (1) above, the strapping machine is further characterized in that, during the process of the bow frame rotating from the open position relative to the middle frame in the closing direction to a predetermined position and then returning to the open position, the belt clamping mechanism performs a clamping action of clamping and pulling out the end of the belt from the front end of the middle frame, and, after the bow frame completes the clamping action any one time, during the process of the bow frame rotating from the open position relative to the middle frame in the closing direction to the closed position again, the binding mechanism performs a binding action of binding the combined part of the belt and the cutter performs a binding action of cutting the belt, and the bundled object can be bundled by alternately performing the clamping action and the binding action.

[0011] (3) In addition to the features described in (2) above, the strapping machine is also characterized in that a supporting component matching the reset plate and a firing component matching the firing rod are provided at the front end of the middle frame, and the firing component is hingedly connected to the front end of the middle frame.

[0012] (4) In addition to the features described in (3) above, the strapping machine is also characterized in that the reset plate is arranged in parallel with the support plate, the reset plate has a linear guide groove, the reset plate matches the clamping plate, and the reset plate also matches the rear part of the firing rod, and a spring applies force to the reset plate so that it has a downward movement tendency.

[0013] (5) In addition to the features described in (4) above, the strapping machine is further characterized in that the clamping plate rotates between a standby position and a clamping position under the action of the reset plate, and when the clamping action is performed, the clamping plate rotates from the standby position to the clamping position, and when the binding action is performed, the supporting component overcomes the force of the spring to drive the reset plate to move upward, and the reset plate applies force to the clamping plate to rotate the clamping plate from the clamping position to the standby position, and at the same time, the firing rod overcomes the force of the spring to keep the clamping plate in the standby position.

[0014] (6) In addition to the features described in any one of (1) to (5) above, the strapping machine is further characterized in that the clamping plate is formed in an "S" shape as a whole.

[0015] (7) In addition to the features described in (6) above, the strapping machine is further characterized in that the reset plate has a boss on one side, a through hole is provided at the rear end of the clamping plate, the rear end of the firing rod has a ratchet, the boss is arranged in the through hole and the boss matches the ratchet, the reset plate applies force to the clamping plate through the boss to cause it to rotate, and when the clamping plate moves to the standby position, the ratchet overcomes the force of the spring to apply force to the boss and thereby keeps the clamping plate in the standby position.

[0016] (8) In addition to the features described in (7) above, the strapping machine is further characterized in that a convex bulge is formed in a curved shape on the side where the front end of the firing rod contacts the firing component, and the rotation radius of the convex bulge is greater than the rotation radius of the ratchet. When the clamping action is performed, the firing component applies a force parallel to the configuration direction of the middle frame to the convex bulge, thereby causing the firing rod to rotate and thereby causing the ratchet to separate from the protruding column.

[0017] (9) In addition to the features described in (8) above, the strapping machine is further characterized in that the firing component is installed in such a manner that the convex bump is blocked when approaching and intersecting the firing component, and avoids the convex bump when separating from the firing component.

[0018] (10) In addition to the features described in (8) above, the strapping machine is further characterized in that the firing component includes a hinge ring and a firing block, the hinge ring is hinged to the front end of the middle frame in a manner parallel to the rotation plane of the bow frame, the firing block is perpendicular to the rotation plane of the hinge ring and corresponds to the convex bump, the firing block is formed by the rotation center of the hinge ring extending backward along the middle frame, and the side adjacent to the middle frame covers the upper edge of the middle front end side wall.

[0019] After adopting the above structure, the present invention has the following advantages compared with the prior art:

[0020] The structure is simple, the layout is ingenious, the operation feels light, and the clamping mechanism wears slowly, making the strapping machine more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a front view of the strapping machine, showing the bow frame in the open position, with the clamping plate in the standby position.

[0023] Figure 2 It is a front view of the strapping machine and a partial cross-sectional view of the bow frame reaching a predetermined position (wherein the clamping plate is still in a standby position).

[0024] Figure 3 It is the main view of the strapping machine and is a partial cross-sectional view of the bow frame reaching the predetermined position (wherein the clamping plate has reached the clamping position).

[0025] Figure 4 It is a front view of the strapping machine and a partial cross-sectional view of the bow frame reaching the closed position.

[0026] Figure 5 is relative to Figure 3 An enlarged partial cross-sectional view of the area near the front end of the strapping machine.

[0027] Figure 6 is relative to Figure 4 An enlarged partial cross-sectional view of the area near the front end of the strapping machine.

[0028] Figure 7 This is the front view of the belt clamping mechanism, which is a diagram of the state of the belt clamping plate in the clamping position (relative to Figure 3 enlarged).

[0029] Figure 8 This is a front view of the belt clamping mechanism, and a view of the belt clamping plate returning to the standby position (relative Figure 4 enlarged).

[0030] Fig. 9 It is the front view of the support plate, clamping plate, reset plate, firing rod and firing parts.

[0031] Fig.10 It is a three-dimensional diagram of a support plate, a clamping plate, a reset plate, a firing rod and a firing component.

[0032] Fig.11 It is a three-dimensional diagram of the needle groove.

[0033] Fig.12 It is a three-dimensional diagram of the center frame. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] However, the strapping machine provided by the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing the embodiments is to make the disclosure of the strapping machine more thorough and comprehensive.

[0036] like Figure 1 As shown, a strapping machine provided in one embodiment of the present invention comprises a middle frame 1 which is formed in a straight line and has a "U"-shaped cross section, a bow frame 2 which is hinged at the rear end to the middle frame 1 and is in an arc shape, a belt clamping mechanism 3 arranged at the front end of the bow frame 2, and an operating handle 4 which is hinged to the bow frame 2 in an "x" shape.

[0037] A horizontal axis 11 perpendicular to the middle frame 1 is provided near the middle of the middle frame 1. The front end of the operating handle 4 has a hook 41 hung on the horizontal axis 11. A tension spring (omitted in the figure) is provided at the rear of the middle frame 1 and the bow frame 2 to continuously apply force so that the front parts of the middle frame 1 and the bow frame 2 have a movement tendency to separate from each other. In this way, when there is no external force, the bow frame 2 is kept relative to the middle frame 1. Figure 1 Shown in open position.

[0038] When force is applied by squeezing the operating handle 4 and the rear of the middle frame 1, the bow frame 2 rotates relative to the middle frame 1, and the front parts thereof move closer to each other until they can no longer rotate, that is, the bow frame 2 reaches the position as shown in FIG. Figure 4 In the closed position shown, the bow frame 2 will first reach a predetermined position before rotating from the open position to the closed position. The predetermined position is located between the open position and the closed position and close to the closed position. The specific position will be described in detail below. Figure 2 As shown, the belt clamping mechanism 3 is installed at the front of the bow frame 2, combined with Figures 5 to 10 The belt clamping mechanism 3 includes a support plate 31 installed in a fixed manner, a clamping plate 32 installed in a rotatable manner and formed in an "S" shape as a whole, a reset plate 33 that can slide up and down, and a rotatable firing rod 34, wherein the front end of the clamping plate 32 matches the front end of the support plate 31.

[0039] exist Figure 3 , 5 , 7, the position of the clamping plate 32 relative to the support plate 31 is a clamping position, wherein the front end of the clamping plate 32 and the front end of the support plate 31 are close to and engage with each other; Figure 1 , 2 In , 4, 6, and 8, the position of the clamping plate 32 relative to the supporting plate 31 is the standby position, and the distance between the front end of the clamping plate 32 and the front end of the supporting plate 31 reaches the maximum; the clamping plate 32 can rotate between the standby position and the clamping position.

[0040] like Figure 1 As shown, in combination with 5, 6, 9, 10, and 12, a support component 12 matching the lower end of the reset plate 33 is provided on one side of the front end of the middle frame 1, and the support component 12 can apply force to the reset plate 33 to make it slide upward; a firing component 13 matching the firing rod 34 is hingedly provided on the other side of the front end of the middle frame 1, and the firing component 13 can apply force to the front end of the firing rod 34 to make it rotate.

[0041] Preferably, the firing component 13 includes a hinge ring 131 hinged parallel to the side wall of the middle frame 1 and a firing block 132 perpendicular to the rotation plane of the hinge ring 131. The firing block 132 corresponds to the front end of the firing rod 34, and the rotation center of the hinge ring 131 is located on the front end side of the firing block 132.

[0042] The front end of the right side wall of the middle frame 1 and the position corresponding to the firing block 132 are curled inwardly and extend to the lower surface of the firing block 132 (such as Fig.12 As shown in the figure, the firing block 132 is supported when it is in a horizontal position. Thus, when force is applied downward from above the firing block 132, the firing block 132 cannot rotate downward due to the support of the side wall of the middle frame 1. However, when force is applied upward from below the firing block 132, the firing block 132 rotates upward (in a clockwise direction).

[0043] Combination Figure 6 , 8 9. The front end of the clamping plate 32 is hook-shaped and matches the front part of the support plate 31. A torsion spring (omitted in the figure) continuously applies force to the clamping plate 32, so that the front end of the clamping plate 32 has a tendency to rotate toward the support plate 31. The reset plate 33 is arranged in parallel with the clamping plate 32. A linear guide groove 331 is provided on the reset plate 33. A spring 35 applies force to the reset plate from top to bottom, so that the reset plate 32 has a tendency to move downward.

[0044] The reset plate 33 matches the clamping plate 32: a boss 332 perpendicular to the reset plate 33 is provided on one side of the reset plate 33, and a through hole 321 is provided at the rear of the clamping plate 32, and the boss 332 is located in the through hole 321. When the clamping plate 32 is in the clamping position, the reset plate 33 applies force to the through hole 321 at the rear of the clamping plate 32 through the boss 332 in an upward sliding manner, so that the clamping plate 32 can be rotated counterclockwise from the clamping position to the standby position.

[0045] The reset plate 33 is also matched with the rear part of the firing rod 34: a ratchet 341 is provided at the end of the firing rod 34, and a torsion spring (omitted in the figure) applies force to the firing rod 34 so that it has a tendency to rotate in the clockwise direction. When the clamping plate 32 is in the clamping position, as shown in FIG. Figures 5 to 8As shown, the boss 332 on the reset plate 33 is located at the lower side of the ratchet tooth 341, and the support component 12 applies an upward force to the reset plate 33 to make the reset plate 33 slide upward. In this way, the boss 332 applies an upward force to the through hole 321 on the one hand, so that the clamping plate 32 rotates from the clamping position to the standby position. On the other hand, the boss 332 simultaneously applies a force to the ratchet tooth 341 to make the firing rod 34 rotate a certain angle in the clockwise direction (that is, the ratchet tooth 341 moves to the right). When the boss 332 moves to the upper side of the ratchet tooth 341, the force of the boss 332 on the ratchet tooth 341 disappears, and the firing rod 34 rotates a certain angle in the counterclockwise direction (the ratchet tooth 341 moves to the left) under the force of the torsion spring (omitted in the figure) to reset. At this time, the ratchet tooth 341 is located below the boss 332, and their position relationship is as shown in the figure. Figure 6 , 8 As shown, when the force exerted by the support member 12 on the reset plate 33 is cancelled, the reset plate 33 tends to move downward under the action of the spring 35, and the ratchet 341 is located below the protrusion 332 and exerts force upward thereon, so that Figure 1 The state shown remains stable, ie the clamping plate 32 remains stably in the standby position.

[0046] Combination Figure 1 , 11 , 12, the binding mechanism includes a needle groove 5 for storing binding needles, which is coaxially hinged with the bow frame 2 at the rear and has a linear shape. The needle groove 5 is located below the horizontal axis 11 in the "U"-shaped section of the middle frame 1.

[0047] A compression spring (omitted from view) is provided between the lower surface of the needle groove 5 and the middle frame 1, so that the needle groove 5 has a tendency to rotate counterclockwise relative to the middle frame 1. In this way, the upper surface of the needle groove 5 abuts against the horizontal axis 11, and there is a certain movable space between the lower surface of the needle groove 5 and the bottom of the middle frame 1. When the front end of the needle groove 5 is subjected to a downward force, it can rotate in the clockwise direction relative to the middle frame 1. After the force disappears, under the action of the compression spring (omitted from view), the needle groove 5 rotates counterclockwise relative to the middle frame 1 until its upper surface abuts against the horizontal axis 11.

[0048] Combination Figure 1 , 5 , 6, 11, 12, a needle outlet 51 is provided at the front end of the needle slot 5, a ejector plate 52 is provided at a position corresponding to the needle outlet 51 on the middle frame 1, a needle mold 53 is provided at the front end of the bow frame 2 adjacent to the support plate 31, the position of the needle mold 53 corresponds to the positions of the needle outlet 51 and the ejector plate 52, the ejector plate 52 can eject the binding needle installed in the needle slot 5 from the needle outlet 51 and press it onto the needle mold 53 to complete the binding (the principle is the same as the working principle of a common stapler).

[0049] A cutter 14 is also provided at the front end of the middle frame 1 and is arranged parallel to the ejector plate 52. The position of the cutter 14 corresponds to the support plate 31. A tape outlet 15 is provided on the middle frame 1 in front of the cutter 14 and its guide direction is parallel to the cutter 14. The tape outlet 15 can guide the tape from the bottom of the middle frame 1 to the top of the middle frame 1. The position of the tape outlet 15 corresponds to the clamping plate 32 and the support plate 31. When the front end of the clamping plate 32 is kept separated from the support plate 31, that is, when the clamping plate 32 is in the standby position and the front end of the bow frame 2 is rotated to be close to the front end of the middle frame 1, the end of the tape guided out by the tape outlet 15 is sent into the opening formed by the front end of the clamping plate 32 and the support plate 31 as the bow frame 2 and the middle frame 1 approach each other.

[0050] Figure 1 This is the initial state of the strapping machine before strapping, where the bow frame 2 is in the open position relative to the middle frame 1. Figure 8 is with Figure 1 The state corresponds to the structural diagram of the belt clamping mechanism, the clamping plate 32 is in the standby position, and its front end remains separated from the support plate 31, the protrusion 332 on the reset plate 33 is located on the upper side of the ratchet 341 at the end of the firing rod 34, and the spring 35 is in a compressed state to apply force downward to the reset plate 33, and the ratchet 341 overcomes the force of the spring 35 to keep the clamping plate 32 in the standby position.

[0051] Preferably, the front end of the firing rod 34 forms a convex bulge 342 in a curved shape near the firing member 13, and the distance from the convex bulge 342 to the rotation center of the firing rod 34 is greater than the distance from the ratchet 341 to the rotation center of the firing rod 34, that is, the rotation radius of the convex bulge 342 is greater than the rotation radius of the ratchet 341. Figure 1 In the state shown, by squeezing the operating handle 4 and the rear part of the middle frame 1 to apply force, the bow frame 2 rotates from the open position to the closed position relative to the middle frame 1 in the clockwise direction. When the needle mold 53 moves to the needle outlet 51 close to the front end of the needle groove 5 as the bow frame 2 rotates (there is no interaction between the needle mold 53 and the needle outlet 51), the convex bump 342 at the front end of the firing rod 34 moves with the rotation of the bow frame 2 until it collides with the firing block 132 and begins to generate interaction force. At this time, the position of the bow frame 2 is the predetermined position (such as Figure 2 , 3 , as shown in 5).

[0052] In the above process, the clamping plate 32 is in the standby position, that is, the clamping plate 32 and the front end of the support plate 31 remain separated. As the bow frame 2 rotates from the open position to the predetermined position, the needle mold 53 moves closer to the needle outlet 51. When the bow frame 2 moves to the predetermined position, the outlet 15 moves to below the opening between the clamping plate 32 and the support plate 31, and the end of the belt guided out from the outlet 15 is gradually sent into the space between the clamping plate 32 and the front end of the support plate 31. At the same time, the convex bulge 342 at the front end of the firing rod 34 and the firing block 132 on the firing component 13 approach each other and collide with each other to produce interaction. The firing component 32 overcomes the force of the torsion spring (omitted in the figure) and applies force to the convex bulge 342 on the firing rod 34 to the left in a direction parallel to the configuration direction of the middle frame 1 (it can also be regarded as the firing component 32 causing the convex bulge 342 to encounter resistance when approaching and intersecting with it), so that the firing rod 34 moves clockwise. The ratchet tooth 341 also rotates clockwise by a certain angle, and the ratchet tooth 341 separates from the protrusion 332 and moves to the right side of the protrusion 332. Under the action of the spring 35, the reset plate 33 moves downward and applies force to the through hole 321 through the protrusion 332 to make the clamping plate 32 rotate in the clockwise direction. The front end of the clamping plate 32 approaches the front end of the support plate 31 and presses the end of the belt led out from the belt outlet 15 onto the support plate 31. In this way, the clamping plate 32 rotates from the standby position to the clamping position and clamps the end of the belt led out from the belt outlet 15 by the support plate 31; then the operating handle 4 is released, the bow frame 2 rotates counterclockwise from the predetermined position to the open position, the front end of the bow frame 2 is separated from the front end of the middle frame 1, and the belt clamping mechanism 3 pulls a section of the belt out of the belt outlet 15, forming a section of belt for bundling between the belt clamping mechanism and the belt outlet 15.

[0053] Since the distance from the bulge 342 to the rotation center of the firing rod 34 is greater than the distance from the ratchet 341 to the rotation center of the firing rod 34, under the action of the lever principle, the firing block 132 only needs to apply a small force to the bulge 342 in a direction parallel to the configuration direction of the middle frame 1 to the left, so as to drive the firing rod 34 to rotate in the clockwise direction, thereby separating the ratchet 341 from the boss 332.

[0054] When the strapping machine is in the initial state, the bow frame 2 is rotated from the open position to the predetermined position by squeezing the operating handle 4, and the firing rod 34 interacts with the firing component to rotate the clamping plate 32 from the standby position to the clamping position to clamp the belt led out from the belt outlet 15, and then the operating handle 4 is released to make the bow frame 2 return to the open position from the predetermined position, so that a section of belt for bundling is formed between the bow frame 2 and the front end of the middle frame 1, and this complete process is the clamping action. It should be noted that in the process of performing the clamping action, when the bow frame 2 rotates from the open position to the predetermined position, the interaction force between the needle mold 53 and the needle outlet 51 (i.e., the front end of the needle groove) has not yet been generated, the needle groove 5 has not rotated relative to the middle frame 1, the convex column 332 collides with the firing block 132 to rotate the firing rod 34 in the counterclockwise direction, and the reset plate 33 moves downward under the action of the spring 35, and the lower end of the reset plate 33 is close to the support component 12 but has not yet interacted.

[0055] In addition, during the clamping operation, after the bow frame 2 reaches the predetermined position, the clamping plate 32 rotates from the standby position to the clamping position.

[0056] After completing the clamping action, the bundled object is pressed against the strapping belt between the front end of the bow frame 2 and the middle frame 1 in a direction perpendicular to the rotation plane of the bow frame 2, and guided into the arc of the bow frame 2. Then, the operating handle 4 is squeezed again to make the bow frame 2 rotate from the open position, so that the strapping belt bypasses the bundled object and gradually surrounds the bundled object until the bow frame 2 reaches the closed position. The combined part of the belt is pressed onto the needle outlet 51 at the front end of the needle groove 5 by the needle mold 53, and the ejector plate 52 ejects the binding needle in the needle groove 5 and presses it toward the needle mold 53, thereby binding the combined part of the belt and forming a closed belt loop on the bundled object. Then, the operating handle 4 is released to return the bow frame 2 to the open position.

[0057] After completing the above-mentioned clamping action, the bundled object is pressed against the belt and guided into the arc of the bow frame 2. Then, by squeezing the operating handle 4, the bow frame 2 is rotated from the open position to the closed position to bind and cut the combined parts of the belt. Then, the operating handle 4 is released to return the bow frame 2 to the open position. This action process is the binding action.

[0058] After the clamping action is completed, the process of operating the bracket 2 to rotate from the open position to the closed position can actually be divided into two stages:

[0059] The first stage: the bow frame 2 rotates from the open position to the predetermined position, the needle mold 53 moves with the bow frame 2 to approach the needle outlet 51, the firing rod 34 interacts with the firing block 132 (the firing block 132 does not rotate due to the obstruction of the middle frame 1), and the firing block 132 overcomes the force of the torsion spring (omitted in the figure) on the firing rod 34 to apply force to it, so that the firing rod 34 rotates a certain angle in the clockwise direction. After the clamping action is completed, the clamping plate 32 has been rotated from the standby position to the clamping position, so the position of the clamping plate 32 will not change at this time.

[0060] Then comes the second stage: after the bow frame 2 reaches the predetermined position, it continues to rotate in the clockwise direction, and the needle mold 53 begins to apply force to the needle outlet 51 (i.e., the front part of the needle groove 5), and the needle groove 5 begins to rotate with the rotation of the bow frame 2. On the one hand, the ejector plate 52 fixed on the middle frame 1 enters the needle outlet 51, and squeezes the binding needle pre-installed in the needle groove 5 toward the needle mold 53. Since the binding part of the belt is pressed on the needle outlet 51 by the needle mold 53, when the bow frame 2 moves to the closed position, the binding needle pushed upward by the ejector plate 52 binds the binding part of the belt together under the action of the needle mold 53 (the binding process is similar to the binding action of a common stapler). At the same time, due to the action of the cutter 14, the belt led out from the belt outlet 15 is cut off as the needle mold 53 presses down; on the other hand, On the other hand, as the front end of the bow frame 2 and the front end of the middle frame 1 get closer, the boss 332 moves to the bottom of the firing block 132, and at the same time, the lower end of the reset plate 33 is against the support component 12, and the support component 12 overcomes the force of the spring 35 to apply force to the reset plate 33 to drive the reset plate 33 to move upward. When the bow frame 2 moves to the closed position, the boss 332 also moves upward to the upper side of the ratchet 341 and applies force to the through hole 321, so that the clamping plate 32 rotates counterclockwise from the clamping position to the standby position. At the same time, the convex bump 342 moves to the lower side of the firing block 132, and the interaction force between the convex bump 342 and the firing block 132 disappears. The firing rod 34 rotates counterclockwise by a certain angle, and the ratchet 341 moves to the bottom of the boss 332.

[0061] Then, the operating handle 4 is released, and the bow frame 2 starts to rotate from the closed position to the open position, the supporting component 12 is separated from the lower end of the reset plate 33, and the interaction force between the supporting component 12 and the reset plate 33 disappears. Under the action of the spring 35, the reset plate 33 tends to move downward, and the ratchet 341 that has previously moved to the bottom of the boss 332 begins to play a role, and the position of the firing rod 34 remains unchanged. The ratchet 341 overcomes the action of the spring 35 to keep the reset plate 33 in the current position, and then the boss 332 located in the through hole 321 keeps the clamping plate 32 in the standby position.

[0062] It should be noted that, in the process of the bow frame 2 moving from the open position to the closed position, the convex bump 342 approaches the firing component 13 and moves to the lower side of the firing block 132, that is, the convex bump 342 and the firing component 13 are intertwined with each other, the firing block 132 remains stationary and applies force to the convex bump, and the convex bump 342 encounters obvious resistance and causes the firing rod 34 to rotate clockwise by a certain angle.

[0063] After the bow frame 2 reaches the closed position, during the process of rotating the bow frame 2 from the closed position to the open position by releasing the operating handle 4, the convex bump 342 starts to move upward relative to the firing block 132 from the lower side of the firing block 132 and separates from it. When the convex bump 342 moves upward to contact the firing block 132, a slight force is applied to the firing block 132 to rotate the firing block 132 in a clockwise direction for a certain angle to avoid the convex bump 342. At this time, the reaction force of the firing block 132 on the convex bump 342 is not sufficient to drive the firing rod 34 to rotate. After the convex bump 342 separates from the firing block 132, the firing rod 34 does not rotate, and the clamping plate 32 remains in the standby position.

[0064] After the binding action is completed, the bow frame 2 returns to the open position, the clamping plate 32 rotates to the standby position, and the strapping machine enters the preparation state before the next strapping, and the next strapping can be performed by alternately performing the clamping action and the binding action.

[0065] When the strapping machine performs a clamping action, the interaction between the firing block 132 and the convex bump 342 triggers the clamping plate 32 to rotate from the standby position to the clamping position, and the force required for the trigger is small, making the operation of the strapping machine more labor-saving. When performing a binding action, the clamping plate 32 rotates from the clamping position to the standby position by relying on the interaction between the supporting component 12 and the reset plate 33. That is, in a complete strapping process, the rotation of the clamping plate 32 between different positions is achieved by the interaction of different matching parts, and the reset plate 33 and the support component 12, which are subjected to greater force, only collide with each other once. Compared with the prior art in which the corresponding structure needs to complete at least two collisions to complete a strapping, the degree of wear is lower, thereby reducing the failure rate of the belt clamping mechanism and improving the stability of the strapping machine.

[0066] The above description is only a preferred embodiment of the present invention, and does not limit the scope of this patent. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A strapping machine comprising: The middle frame is formed in a straight line, and the belt can be pulled out from the front end; An arch frame is installed to be rotatable relative to the middle frame; An operating handle hingedly connected to the bow frame in an "X" shape; A belt clamping mechanism, mounted at the front end of the bow frame, capable of clamping the end of the belt; The binding mechanism comprises a needle groove whose rear end is hinged on the middle frame, a needle mold installed at the front end of the bow frame, and an ejector piece fixed at the front end of the middle frame and corresponding to the needle groove and the needle mold; A cutter, mounted on the front of the middle frame and arranged parallel to the ejector plate; The strapping machine is characterized in that The belt clamping mechanism comprises a support plate, a clamping plate, a reset plate, and a firing rod, wherein the clamping plate and the firing rod are rotatably mounted, and the front end of the clamping plate matches the front end of the support plate; A supporting component matching the reset plate and a firing component matching the firing rod are provided at the front end of the middle frame, and the firing component is hinged to the front end of the middle frame; The reset plate is arranged in parallel with the support plate, and has a linear guide groove on the reset plate. The reset plate matches the clamping plate and also matches the rear part of the firing rod. A spring applies force to the reset plate so that it has a downward movement tendency.

2. The strapping machine according to claim 1, characterized in that: In the process of the bow frame rotating from the open position to the closed direction relative to the middle frame to a predetermined position and then returning to the open position, the belt clamping mechanism performs a clamping action of clamping and pulling out the end of the belt from the front end of the middle frame, and after the bow frame completes the clamping action any one time, in the process of the bow frame rotating from the open position to the closed direction relative to the middle frame again, the binding action of binding the combined part of the belt by the binding mechanism and cutting the belt by the cutter is performed, and the bundled object can be bundled by alternately performing the clamping action and the binding action.

3. The strapping machine according to claim 2, characterized in that: The clamping plate rotates between the standby position and the clamping position under the action of the reset plate. When the clamping action is performed, the clamping plate rotates from the standby position to the clamping position. When the binding action is performed, the supporting component overcomes the force of the spring to drive the reset plate to move upward. The reset plate applies force to the clamping plate to rotate the clamping plate from the clamping position to the standby position. At the same time, the firing rod overcomes the force of the spring to keep the clamping plate in the standby position.

4. The strapping machine according to any one of claims 1 to 3, characterized in that: The clamping plate is formed in an "S" shape as a whole.

5. The strapping machine according to claim 2, characterized in that: The reset plate has a boss on one side, a through hole at the rear end of the clamping plate, a ratchet at the rear end of the firing rod, the boss is arranged in the through hole and the boss matches the ratchet, the reset plate applies force to the clamping plate through the boss to make it rotate, when the clamping plate moves to the standby position, the ratchet overcomes the force of the spring to apply force to the boss and thereby keeps the clamping plate in the standby position.

6. The strapping machine according to claim 5, characterized in that: A bulge is formed in a curved shape on one side of the front end of the firing rod that contacts the firing component, and the rotation radius of the bulge is greater than the rotation radius of the ratchet. When the clamping action is performed, the firing component applies a force parallel to the configuration direction of the middle frame to the bulge, causing the firing rod to rotate and thereby separating the ratchet from the boss.

7. The strapping machine according to claim 6, characterized in that: The firing member is installed in such a manner that the convex bump is blocked when approaching and intersecting the firing member, and avoids the convex bump when the firing member is separated from the firing member.

8. The strapping machine according to claim 7, characterized in that: The firing component includes a hinge ring and a firing block. The hinge ring is hinged to the front end of the middle frame in parallel with the rotating plane of the bow frame. The firing block is perpendicular to the rotating plane of the hinge ring and corresponds to the convex bump. The firing block is formed by extending backward along the middle frame from the rotation center of the hinge ring.

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