Reciprocating saw with clamp

Abstract

The present invention relates to a reciprocating saw equipped with a clamp, and its design goal is to improve the accuracy and efficiency of sawing operations while reducing labor intensity. This reciprocating saw includes a front housing, a reciprocating motion conversion mechanism, a power unit, a mold frame, and a special feeding action mechanism. Among them, the feeding action mechanism is equipped with a power extension component, a swing component, a feeding pawl, a ratchet, a large gear, a small gear, a mounting seat, a gear rod, and a clamp vertical plate fixed to the gear rod. During the cutting process, the feeding action mechanism can automatically provide a synchronous feed amount instead of manual feeding, thereby reducing labor intensity and improving processing quality. In addition, the invention is also provided with a clutch component to achieve rapid switching between automatic and manual feeding modes, providing higher operational flexibility. In general, this invention achieves rapid switching between semi-automatic and manual feeding, providing an efficient, precise and convenient cutting experience.

Description

Technical Field

[0001] The invention belongs to the technical field of reciprocating saws, in particular to a reciprocating saw with a clamp and capable of automatic cutting. Background Art

[0002] In the process of cutting profiles, pipes, wood and other workpieces with a reciprocating saw, two problems often occur due to its working principle and saw blade structure design: excessive vibration causing fatigue and low cutting accuracy. These two problems are interrelated.

[0003] 1. Excessive vibration: During the operation of a reciprocating saw, the saw blade driven by the motor reciprocates, and the resulting cutting force causes vibrations in the tool and the workpiece. This vibration may not only affect the cutting accuracy, but may also cause fatigue to the operator, and prolonged use may have adverse effects on the operator's hand health.

[0004] 2. Low cutting accuracy: Due to vibration and insufficient control of the tool on the workpiece, the edge of the workpiece after cutting may appear jagged, affecting the appearance and use of the product. In addition, if the workpiece moves during the cutting process, the cutting line may deviate from the predetermined route, further reducing the cutting accuracy.

[0005] In order to solve these problems, a possible solution is to add tools to the reciprocating saw to fix the workpiece, which can reduce vibration and improve cutting accuracy by precisely controlling the fixing tool. For example, China Authorization Announcement CN101758294B discloses a reciprocating saw whose clamping force of the clamp is adjustable to accommodate workpieces of different specifications. After clamping the workpiece, the reciprocating saw rotates relative to the clamp to cut the workpiece. Since the clamp and the reciprocating saw are pivotally connected, the reciprocating saw can only cut in a certain cutting direction, thereby solving the problems of large vibration and low precision when the reciprocating saw is cutting to a certain extent. The advantage of this design is that the clamping force of the clamp is controlled by the clutch, avoiding the problem of clamping too loose or too tight.

[0006] However, in actual application, this reciprocating saw requires the operator to operate the clamp handle with one hand and the reciprocating saw with the other hand, and the cutting feed rate is controlled by the operator. The cutting work is continuous, and if the operator applies too much feed rate during continuous cutting, "tooth skipping" may occur, causing the saw blade to break, and manual control of the feed rate requires a lot of effort and is prone to fatigue. Summary of the invention

[0007] In view of the above problems, the present invention provides a reciprocating saw equipped with a clamp, whose unique design provides switching between semi-automatic and manual feeding, thereby enhancing operating flexibility and cutting accuracy.

[0008] The invention object of the present invention is achieved through the following technical solution: a reciprocating saw equipped with a clamp, comprising:

[0009] The front shell is composed of two half shells;

[0010] A reciprocating motion conversion mechanism installed in the front housing, the mechanism comprising a reciprocating shaft;

[0011] The free end of the reciprocating shaft is used to mount the saw blade;

[0012] A power unit connected to the reciprocating motion conversion mechanism;

[0013] A mold frame, partly located in the front housing, and fastened to the components in the reciprocating motion conversion mechanism by bolts;

[0014] The reciprocating saw also includes a feeding action mechanism, which includes:

[0015] A power extension component connected to the reciprocating shaft through transmission, the component includes a curved groove arranged inside the reciprocating shaft and extending along the axis of the reciprocating shaft, a slide groove arranged on the side wall of the curved groove, and a transmission pin that passes through the sliding stabilizing seat from bottom to top and enters the curved groove, and the upper end of the transmission pin is provided with an arc protrusion that cooperates with the slide groove;

[0016] A swing assembly drivingly connected to the power extension assembly, the assembly comprising a fork frame having one end detachably fixedly connected to a driving pin, a swing arm hingedly connected to the other end of the fork frame, which can be rotated and fixed to a pivot member of the front housing, and the other end of the swing arm is fixed to a side surface below the pivot center of the pivot member;

[0017] A feed pawl, which is hinged on the pivot member and is located above the connection point of the front housing;

[0018] A ratchet wheel rotatably connected to the interior of the template frame through a mounting shaft and cooperating with a feed pawl;

[0019] A large gear coaxially connected to the ratchet;

[0020] A small gear meshing with a large gear;

[0021] A mounting seat fixed on the template frame for mounting the pinion;

[0022] a gear rod slidably mounted in the mounting seat and meshing with the pinion gear;

[0023] A fixture vertical plate with at least one end fixedly connected to the gear rod;

[0024] A fixed clamping plate which is perpendicular to the saw blade and fixed to the vertical plate of the clamp;

[0025] A movable splint arranged parallel to the fixed splint, the distance of which is adjustable and lockable;

[0026] In the cutting process of the reciprocating saw, the feeding action mechanism provides a synchronous feeding amount to replace manual feeding, thereby reducing labor intensity and improving processing quality.

[0027] Preferably, the large gear, the small gear, the mounting seat and the gear rod are provided in two groups respectively and are arranged symmetrically with the saw blade as the center, so that the fixture vertical plate, the fixed clamp plate, the movable clamp plate and the two mounting seats form a whole. This design makes the entire fixture more stable and further improves the accuracy of the cutting process.

[0028] Preferably, the mold support frame further includes two downwardly extending ears and a vertical plate, the two ears are provided with coaxial through holes, and these through holes are used to rotatably support the mounting shaft; the upper end of the vertical plate is provided with an upper slide seat connected by bolts, and the ends of both ends of the upper slide seat are respectively provided with a through hole for the gear rod to slide tightly. This design allows the gear rod to move more stably in the slide seat, improving the feeding accuracy.

[0029] Preferably, the size and number of teeth of the ratchet, as well as the coordination with the swing assembly and the power extension assembly, can be designed to make the feeding transmission motion as close to linear continuity as possible. This design makes the cutting action smoother, improves work efficiency and processing quality.

[0030] Preferably, the swing arm is broken in the middle and is provided with an opening and a shaft that can extend into the opening, with a certain gap between the two, one end of which is provided with a rotatable switching nut, and the other end is provided with a thread matching the nut, and the switching nut is partially exposed outside the front housing for easy operation by hand. This design allows the operator to easily change whether the swing arm is effectively transmitted by switching the nut. This can increase the flexibility of the machine and the operator's control.

[0031] Preferably, in order to switch between automatic feeding and manual feeding modes, a clutch assembly is provided in the feeding action mechanism, the clutch assembly includes replacing the installation shaft with a spline shaft with a hollow structure, changing the ratchet wheel originally fixedly connected to the installation shaft to a rotatable connection, and adding a fixed active gear ring on the ratchet side; the clutch assembly also includes a spline sleeve having a sliding fit with the outer surface of the spline shaft and having an external thread, a driven gear ring threadedly connected to the spline sleeve, and a push spring arranged between the driven gear ring and the adjacent side large gear and sleeved on the outside of the spline shaft; under normal conditions, the push spring pushes the driven gear ring to a position meshing with the active gear ring, so that the rotation of the ratchet wheel is transmitted to the spline shaft through the active gear ring and the driven gear ring, thereby driving the large gear and other related transmission parts to complete automatic feeding. The clutch assembly is provided in the feeding action mechanism, which can conveniently switch between automatic feeding and manual feeding modes, provides more operation options, and enables this reciprocating saw to better meet the cutting needs in different situations.

[0032] Preferably, in order to facilitate the separation of the driven gear ring, a waist hole corresponding to the position of the spline sleeve is provided on the spline shaft, and a thread is provided on the spline shaft mouth on one side of the push spring; a threaded unlocking member is provided at the thread, and the unlocking member includes an exposed rotating handle, and an extension rod with one end extending into the interior of the spline shaft and the other end rotatably connected to the rotating handle; the end of the extension rod is provided with a radially protruding clamping portion, and the inner ring of the spline sleeve is provided with a clamping hole that cooperates with the clamping portion; when the clamping portion passes through the waist hole and enters the clamping hole of the spline sleeve, the rotating handle can move the extension rod in the direction of the thread, thereby driving the spline sleeve and the driven gear ring installed on the spline sleeve to complete the meshing or separation with the active gear ring. This solution improves the design of the clutch assembly, so that the operator can more easily operate the separation of the driven gear ring, thereby more easily switching between automatic feeding and manual feeding modes. This improvement can enable the operator to adjust the operating mode of the equipment more quickly and easily, thereby improving work efficiency.

[0033] Preferably, a flexible pad is provided on one side of the movable clamping plate toward the fixed clamping plate. This design can protect the cut object and prevent it from being subjected to excessive pressure or damage during the cutting process.

[0034] Preferably, a stop pawl is provided in the cooperation between the ratchet wheel and the feeding pawl, and the stop pawl is hinged on the pivot member and is located below the connection point of the front housing, which can prevent the feeding action from being reversed, thereby improving the stability and accuracy of the cutting process.

[0035] In summary, the present invention has the following advantages compared with the prior art:

[0036] 1. Improve production efficiency: With semi-automatic feeding mode and manual feeding mode, the operator can quickly switch according to actual needs to improve production efficiency.

[0037] 2. Increased operational flexibility: By designing the switching nut at the swing arm position, greater operational flexibility is provided, and the reciprocating saw is more easily controlled in specific tasks or working environments.

[0038] 3. Protective material: By adding a flexible pad, the clamping force is increased and the workpiece is protected to prevent it from excessive pressure or damage during the cutting process.

[0039] 4. Improve cutting accuracy: Adding a stop pawl to the ratchet and feed pawl can prevent the reversal of the feed action, thereby improving the stability and accuracy of the cutting process.

[0040] 5. Improve operational convenience: By improving the design of the clutch assembly, the operator can more easily operate the separation of the driven gear ring, thereby making it easier to switch between automatic feeding and manual feeding modes, thereby improving operational convenience.

[0041] In summary, this design provides users with an efficient and convenient tool by increasing operating flexibility, improving cutting accuracy and efficiency, protecting materials, and improving operating convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of the present invention;

[0043] Figure 2 It is a schematic diagram of a partial structure in which half of the shell of the present invention is hidden;

[0044] Figure 3 It is a partial structural schematic diagram of the present invention in which the front housing is hidden and some parts of the reciprocating motion conversion mechanism are hidden;

[0045] Figure 4 is Figure 3 A schematic diagram of the structure of the explosion separation of the related parts of the reciprocating motion conversion mechanism;

[0046] Figure 5 It is a schematic diagram of the structure of the formwork frame;

[0047] Figure 6 yes Figure 5 A partial enlarged view of the middle A;

[0048] Figure 7 It is a structural diagram of the combination of the die frame and the feeding action mechanism;

[0049] Figure 8 This is an exploded view of the clutch assembly components.

[0050] Markings in the figure:

[0051] Front housing 10, reciprocating motion conversion mechanism 20, reciprocating shaft 21, saw blade 22, sliding stabilizing seat 23, power unit 30, mold frame 40, support ear 41, vertical plate 42, upper slide seat 43, feeding action mechanism 50, power extension assembly 51, curved groove 511, slide groove 512, transmission pin 513, arc protrusion 514, swing assembly 52, fork frame 521, swing arm 522, pivot 523, switching nut 524, feeding pawl 53, mounting shaft 54, ratchet Wheel 55, large gear 56, small gear 57, mounting seat 58, gear rod 59, fixture vertical plate 591, fixed splint 592, movable splint 593, long rod 594, fixed nut 595, adjusting nut 596, adjusting screw 597, stop pawl 60, clutch assembly 70, active ring gear 71, spline sleeve 72, driven ring gear 73, push spring 74, waist hole 75, unlocking piece 76, rotating handle 761, extension rod 762, clamping part 763, flexible pad 90. DETAILED DESCRIPTION

[0052] The present invention will be further described below with reference to the embodiments shown in all the accompanying drawings:

[0053] Example 1

[0054] like Figure 1-2 As shown, the present invention provides a reciprocating saw equipped with an automatic feeding device, which can autonomously provide an appropriate feeding amount during the cutting operation, overcome the inconvenience of manual feeding, and can reduce labor and improve processing quality. Figure 1 , we use the central axis of the reciprocating saw body as a reference to define the front and back and up and down directions to facilitate subsequent description and understanding.

[0055] The present reciprocating saw design includes the following major components: a front housing 10, which is constructed of two half housings, similar to the conventional reciprocating saw design; a reciprocating motion conversion mechanism 20 built into the front housing 10, which includes a reciprocating shaft 21, which has a saw blade 22 mounted at the free end thereof by configuring a dedicated component; a power unit 30 that is power-connected to the reciprocating motion conversion mechanism 20; and a backing frame 40, a portion of which is located within the front housing 10 and is fastened to the components of the reciprocating motion conversion mechanism 20 by bolts, extending from the connection portion to the free end of the reciprocating shaft 21.

[0056] In addition, the reciprocating saw also includes a feeding action mechanism 50, which includes a power extension assembly 51 connected to the reciprocating shaft 21, and a swing assembly 52 connected to the power extension assembly 51. More specific components include a feeding pawl 53, a ratchet 55, a large gear 56 and a small gear 57, as well as a mounting seat 58 for mounting the small gear 57, a gear rod 59 and a clamp plate 591. All these components are precisely designed and installed to ensure stability and accuracy during work. In particular, the clamp plate 591, which is matched with a fixed clamp plate 592 and an adjustable movable clamp plate 593, ensures the stable position of the workpiece during the cutting process.

[0057] The reciprocating motion conversion mechanism 20 also includes a sliding stabilizing seat 23 that provides sliding stability for the reciprocating shaft 21. At the same time, the power extension assembly 51 includes a curved groove 511 and a slide groove 512 extending along the axis of the reciprocating shaft 21. Through the up and down movement of the transmission pin 513, the swing arm 522 swings, thereby pushing and pulling the feed pawl 53, and then driving the ratchet 55 to rotate.

[0058] During the cutting operation, after the workpiece to be cut is fixed between the two clamping plates, the power unit 30 is started, and the saw blade 22 is driven to cut the workpiece by the reciprocating motion of the reciprocating shaft 21. At the same time, the transmission pin 513 also moves up and down synchronously under the drive of the reciprocating shaft 21, and this motion is transmitted through the swing assembly 52, further driving the ratchet 55 to rotate. Subsequently, the ratchet 55 drives the large gear 56 to rotate, and the large gear 56 drives the small gear 57 to rotate. The rotation of the small gear 57 further pushes the gear rod 59 to move upward, and then the gear rod 59 drives the fixed clamping plate 592 and the movable clamping plate 593 to push the workpiece toward the saw blade 22, completing the entire cutting process.

[0059] During the entire cutting process, the operator only needs to hold the reciprocating saw to operate, which greatly reduces the work intensity and energy input. The constant feed rate also greatly improves the cutting quality.

[0060] In general, this reciprocating saw not only improves work efficiency and reduces the operator's labor intensity, but also improves cutting quality through structural optimization and the design of the feeding mechanism. The entire cutting process is simpler and more intuitive, making the operation more convenient and having broad application potential and prospects.

[0061] In order to further improve the stability of workpiece clamping, the design of the large gear 56, the small gear 57, the mounting seat 58 and the gear rod 59 includes two groups of components, which are symmetrically arranged with the saw blade 22 as the center. Through this symmetrical design, we can integrate the fixture vertical plate 591, the fixed clamping plate 592, the movable clamping plate 593 and the two mounting seats 58 into a unified whole, effectively improving the stability of each part.

[0062] Formwork 40 (see Figure 5 ) further comprises two downwardly extending ears 41 and a vertical plate 42. Both ears 41 are provided with coaxial through holes to rotatably support the mounting shaft 54. In order to enhance the feeding stability, an upper slide 43 connected by bolts is installed on the upper end of the vertical plate 42. At the ends of both ends of the upper slide 43, we design a through hole for the gear rod 59 to slide tightly. Through this design, each gear rod 59 can obtain double support when moving, thereby improving the stability of movement.

[0063] Since the transmission of the ratchet is an intermittent motion, the feed rate it provides is nonlinear. When cutting soft materials such as wood, plastic, etc., this nonlinear feed has little effect on the cutting result. However, when cutting metal parts, we need to provide a continuous feed rate as much as possible. In order to achieve this goal, we can design the size and number of teeth of the ratchet 55, and reasonably cooperate with the swing assembly 52 and the power extension assembly 51, so that the feed transmission motion is as close to linear as possible.

[0064] In order to realize the switching between automatic feeding and manual feeding, we designed the following Figure 4 The swing arm 522 is shown. An opening and a shaft that can extend into the opening are provided in the middle of the swing arm 522, and a certain gap is maintained between the two. A rotatable switching nut 524 is provided at one end, and a thread matching the nut is provided at the other end. The switching nut 524 is partially exposed outside the front housing 10, which is convenient for manual operation.

[0065] We also set a clutch assembly 70 in the feeding action mechanism 50 to switch between automatic feeding and manual feeding modes. The clutch assembly 70 includes replacing the installation shaft 54 ​​with a spline shaft with a hollow structure, changing the ratchet 55 originally fixedly connected to the installation shaft 54 ​​to a rotatable connection, and adding a fixed active ring gear 71 on the side of the ratchet 55. The clutch assembly 70 also includes a spline sleeve 72 with an external thread that has a sliding fit with the outer surface of the spline shaft, a driven ring gear 73 that is threadedly connected to the spline sleeve 72, and a push spring 74 that is arranged between the driven ring gear 73 and the adjacent side large gear 56 and is sleeved on the outside of the spline shaft. Under normal conditions, the push spring 74 pushes the driven ring gear 73 to a position that meshes with the active ring gear 71, so that the rotation of the ratchet 55 is transmitted to the spline shaft through the active ring gear 71 and the driven ring gear 73, thereby driving the large gear and other related transmission parts to complete automatic feeding.

[0066] In order to facilitate the separation of the driven gear ring 73, a waist hole 75 corresponding to the position of the spline sleeve 72 is provided on the spline shaft, and a thread is provided on the spline shaft mouth on one side of the push spring 74. A threaded unlocking member 76 is provided at the thread, and the unlocking member 76 includes an exposed rotating handle 761, and an extension rod 762 with one end extending into the interior of the spline shaft and the other end rotatably connected to the rotating handle 761. The end of the extension rod 762 is provided with a radially protruding clamping portion 763, and the inner ring of the spline sleeve 72 is provided with a clamping hole matched with the clamping portion 763. When the clamping portion 763 passes through the waist hole 75 and enters the clamping hole of the spline sleeve 72, the rotating handle 761 can make the extension rod 762 move in the direction of the thread, thereby driving the spline sleeve 72 and the driven gear ring 73 installed on the spline sleeve 72 to achieve engagement or separation with the active gear ring 71.

[0067] There are two purposes for the separation of the clutch assembly 70: 1. When cutting soft materials such as wood, the feed rate requirement is not high, and the workpiece is fixed externally. At this time, the mounting shaft 54 ​​is not restricted by the ratchet 55, and the two clamps clamp the workpiece normally. The operator can manually press down the machine body to cut the workpiece; 2. After the cutting is completed, the saw blade 22 needs to be reset. After the clutch assembly 70 is separated, the clamp vertical plate 591 and the fixed clamp plate 592 and the movable clamp plate 593 slide down synchronously under their own weight to complete the reset.

[0068] In order to further enhance the clamping effect, a flexible pad 90 is added to the side of the movable clamping plate 593 facing the fixed clamping plate 592. The pad 90 can provide additional support force, better protect the workpiece and improve its clamping stability.

[0069] The ratchet 55 and the feed pawl 53 cooperate to provide a one-way rotation drive. The pawl has a stop function. To achieve a better stop effect, a stop pawl 60 is provided. The stop pawl 60 is hinged on the pivot (523) and is located below the connection point of the front housing (10). This setting can help us control the movement of the device more effectively when needed.

[0070] The movable clamping plate 593 can be moved in any form in the prior art, for example, the movable clamping plate 593 is slidably positioned in the fixture vertical plate 591 through a track, and then the bolt and nut structure is used to drive the push block to directly contact the bottom of the movable clamping plate 593 to displace the movable clamping plate to achieve the purpose of clamping the workpiece. The combination of the bolt and nut has a locking function, and it can also be a component structure driven by a connecting rod, with the dead point of the connecting rod as a locking structure, such as angle locking, cross locking, trident locking, etc. In this embodiment, we adopt the screw adjustment and locking method, which specifically includes setting the two toothed rods 59 as hollow, setting a long rod 594 in the movable clamping plate 593 that extends into the hollow of the two toothed rods 59 as a guide, setting a fixed nut 595 on the back of the fixture vertical plate 591 and setting an adjusting nut 596 on the same surface of the movable clamping plate 593, and setting an adjusting screw 597 that cooperates with the fixed nut 595 and the adjusting nut 596 to adjust the distance between the movable clamping plate 593 and the fixed clamping plate 592. This design makes the displacement of the movable clamping plate 593 more precise, thereby improving the clamping stability and cutting effect of the workpiece.

[0071] Cutting process demonstration steps:

[0072] 1. Prepare the workpiece and equipment: First, the staff sets the workpiece on the equipment and ensures that all equipment parts such as the large gear 56, the small gear 57, the mounting seat 58 and the gear rod 59 are properly installed and adjusted. The operator needs to appropriately adjust the fixture plate 591 and the fixed clamp plate 592 according to the size and shape of the workpiece.

[0073] 2. Clamping the workpiece: The staff uses the fixture vertical plate 591, the fixed clamping plate 592, the movable clamping plate 593 and the two mounting seats 58 to form a stable whole to clamp the workpiece. The adjusting screw 597 rotates to make the movable clamping plate 593 move along the gear rod 59, changing the distance from the fixed clamping plate 592 to accommodate workpieces of different sizes. The flexible pad 90 fits the surface of the workpiece, providing additional clamping stability.

[0074] 3. Setting of feeding mechanism: According to the cutting requirements, the operator can select manual or automatic feeding by operating the clutch assembly 70 and the switching nut 524. Manual feeding is suitable for occasions where the feeding amount requirement is not high, such as cutting wood, etc.; automatic feeding is achieved through the cooperation of the ratchet 55 and the feeding pawl 53. This design can make the feeding transmission motion as close to linear continuity as possible by changing the size and number of teeth of the ratchet, and is suitable for cutting materials such as metal that require continuous feeding.

[0075] 4. Start cutting: After setting the cutting parameters and ensuring that all parts are ready, start cutting. The feeding mechanism of the equipment drives the ratchet 55 through the swing component 52 and the power extension component 51, which in turn drives the movement of the gear rod 59, so that the fixture vertical plate 591, the fixed clamp plate 592, and the movable clamp plate 593 follow the movement to realize the feeding of the workpiece. At the same time, during the cutting process, the pawl has a stop function, which can be enhanced by the stop pawl 60 to prevent the workpiece from moving in the opposite direction.

[0076] 5. Finish cutting and reset: After cutting is finished, the unlocking member 76 in the clutch assembly 70 can be used to separate the active gear ring 71 and the driven gear ring 73, so that the saw blade 22 can move freely. Then, the fixture upright plate 591, the fixed clamp plate 592, and the movable clamp plate 593 return to the initial position under their own weight, that is, the saw blade 22 is reset.

[0077] 6. Removing the workpiece: After the cutting and resetting are completed, the control of the movable clamping plate 593 is loosened by adjusting the screw 597, and then the workpiece that has been cut is removed. Next, the staff can check and evaluate the cutting results, and if necessary, make adjustments to the cutting equipment to optimize the effect of the next cutting.

[0078] 7. Prepare for the next cut: After ensuring that the equipment and tools are clean and in good condition, the staff can install the new workpiece on the equipment to prepare for the next cutting job. If necessary, further equipment settings and adjustments can be made according to the material and shape of the new workpiece, including adjusting the position of the fixture, selecting the appropriate feeding method, and setting the appropriate cutting parameters.

[0079] 8. Throughout the cutting process, the staff needs to pay close attention to the operating status of the equipment, and make timely adjustments and interventions to ensure the cutting effect and safe operation of the equipment. At the same time, they also need to understand and comply with relevant safety regulations to prevent possible accidents and injuries. In general, this detailed cutting process requires the operator to have sufficient skills and experience to be able to operate the equipment effectively and deal with various possible problems.

[0080] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A reciprocating saw equipped with a clamp, comprising: The front housing (10) is composed of two half housings; A reciprocating motion conversion mechanism (20) installed in the front housing (10), the mechanism comprising a reciprocating shaft (21); The free end of the reciprocating shaft (21) is used to mount the saw blade (22); A power unit (30) drivingly connected to the reciprocating motion conversion mechanism (20); A backing frame (40) is partially located in the front housing (10) and is fastened to components in the reciprocating motion conversion mechanism (20) by bolts; The invention is characterized in that it also comprises a feeding action mechanism (50), which comprises: A power extension component (51) connected to the reciprocating shaft (21) through transmission, the component comprising a curved groove (511) provided inside the reciprocating shaft (21) and extending along the axis of the reciprocating shaft (21), a slide groove (512) provided on the side wall of the curved groove (511), and a transmission pin (513) passing through the sliding stabilizing seat (23) from bottom to top and then entering the curved groove (511), wherein the upper end of the transmission pin (513) is provided with an arc protrusion (514) that cooperates with the slide groove (512); a swing assembly (52) drivingly connected to the power extension assembly (51), the assembly comprising a fork frame (521) having one end detachably fixedly connected to the transmission pin (513), a swing arm (522) hingedly connected to the other end of the fork frame (521), rotatably fixed to a pivot member (523) of the front housing (10), and the other end of the swing arm (522) being fixed to a side surface below the pivot center of the pivot member (523); A feed pawl (53) which is hinged on the pivot member (523) and is located above the connection point of the front housing (10); A ratchet wheel (55) rotatably connected to the interior of the template frame (40) via a mounting shaft (54) and cooperating with the feed pawl (53); A large gear (56) coaxially connected to the ratchet (55); A small gear (57) meshing with the large gear (56); A mounting seat (58) fixed on the template frame for mounting a pinion (57); a gear rod (59) slidably mounted in the mounting seat (58) and meshing with the pinion gear (57); A fixture stand plate (591) with at least one end fixedly connected to the gear rod (59); A fixed clamping plate (592) perpendicular to the saw blade (22) and fixed on the clamp vertical plate (591); A movable clamping plate (593) arranged parallel to the fixed clamping plate (592) and having an adjustable distance and being lockable; In the cutting process of the reciprocating saw, the feeding action mechanism (50) provides a synchronous feeding amount to replace manual feeding, thereby reducing labor intensity and improving processing quality.

2. The reciprocating saw equipped with a clamp according to claim 1, characterized in that: The large gear (56), the small gear (57), the mounting seat (58) and the gear rod (59) are respectively provided in two groups and are symmetrically arranged with the saw blade (22) as the center, so that the fixture vertical plate (591), the fixed clamping plate (592), the movable clamping plate (593) and the two mounting seats (58) form a whole.

3. A reciprocating saw equipped with a clamp according to claim 1 or 2, characterized in that: The mold frame (40) further includes two downwardly extending ears (41) and a vertical plate (42), and the two ears (41) are provided with coaxial through holes, which are used to rotatably support the mounting shaft (54); the upper end of the vertical plate (42) is provided with an upper slide seat (43) fastened by bolts, and the ends of both ends of the upper slide seat (43) are respectively provided with a through hole for the gear rod (59) to slide tightly.

4. The reciprocating saw equipped with a clamp according to claim 3, characterized in that: The swing arm (522) is broken in the middle and is provided with an opening and a shaft that can extend into the opening, with a certain gap between the two. A rotatable switching nut (524) is provided at one end of the swing arm (522), and a thread matching the nut is provided at the other end. The switching nut (524) is partially exposed outside the front housing (10) to facilitate manual operation.

5. The reciprocating saw equipped with a clamp according to claim 4, characterized in that: in, In order to switch between the automatic feeding mode and the manual feeding mode, a clutch assembly (70) is provided in the feeding action mechanism (50), wherein the clutch assembly (70) includes replacing the mounting shaft (54) with a spline shaft having a hollow structure, changing the ratchet (55) originally fixedly connected to the mounting shaft (54) to be rotatably connected, and adding a fixedly connected active gear ring (71) to the side of the ratchet (55).

6. The reciprocating saw equipped with a clamp according to claim 5, characterized in that: The clutch assembly (70) further comprises a spline sleeve (72) having an external thread and being in a sliding fit with the outer surface of the spline shaft, a driven gear ring (73) threadedly connected to the spline sleeve (72), and a push spring (74) disposed between the driven gear ring (73) and the adjacent side large gear (56) and sleeved on the outside of the spline shaft; in a normal state, the push spring (74) pushes the driven gear ring (73) to a position meshing with the active gear ring (71), so that the rotation of the ratchet wheel (55) is transmitted to the spline shaft through the active gear ring (71) and the driven gear ring (73), thereby driving the large gear to complete automatic feeding.

7. The reciprocating saw equipped with a clamp according to claim 6, characterized in that: in, In order to facilitate the separation of the driven gear ring (73), a waist hole (75) corresponding to the position of the spline sleeve (72) is provided on the spline shaft, and a thread is provided on the spline shaft mouth on one side of the push spring (74); a threaded unlocking member (76) is provided at the thread, and the unlocking member (76) includes an exposed rotating handle (761) and an extension rod (762) with one end extending into the interior of the spline shaft and the other end rotatably connected to the rotating handle (761); the extension rod The end of the spline sleeve (762) is provided with a radially protruding clamping portion (763), and the inner ring of the spline sleeve (72) is provided with a clamping hole that cooperates with the clamping portion (763); when the clamping portion (763) passes through the waist hole (75) and enters the clamping hole of the spline sleeve (72), the handle (761) is rotated to move the extension rod (762) in the direction of the thread, thereby driving the spline sleeve (72) and the driven gear ring (73) installed on the spline sleeve (72) to complete the meshing or separation with the active gear ring (71).

8. The reciprocating saw equipped with a clamp according to claim 1, characterized in that: A flexible pad (90) is provided on the side of the movable clamping plate (593) facing the fixed clamping plate (592).

9. The reciprocating saw equipped with a clamp according to claim 1, characterized in that: A stop pawl (60) is additionally provided in cooperation between the ratchet wheel (55) and the feed pawl (53); the stop pawl (60) is hinged on the pivot member (523) and is located slightly below the connection point with respect to the front housing (10).

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