Automatic clamping and overturning mechanism for flexible profiling of hammer handle

Abstract

The application discloses an automatic clamping and overturning mechanism for hammer handle flexible profiling machining, which comprises limiting and clamping mechanisms and a worm drive mechanism respectively corresponding to and installed at both ends of a profiling machining body and used for clamping a wood stick to be machined, wherein the limiting and clamping mechanism comprises a hollow annular limiting sleeve and an elastic limiting clamp movably assembled on the peripheral body of the annular limiting sleeve, and the wood stick to be machined is transversely arranged in the annular limiting sleeve; one end of the elastic limiting clamp is connected with the annular limiting sleeve, and the other end is drivingly connected with the worm drive mechanism, so that the wood stick to be machined is clamped or released under the driving of the worm drive mechanism, and the limiting and clamping mechanism and the wood stick to be machined are synchronously overturned. The wood stick to be machined is clamped or released by the elastic limiting clamp driven by the worm drive mechanism, the wood stick to be machined is automatically clamped and overturned, manual locking is not needed, time and labor are saved, and the clamping efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of daily tool processing, in particular to an automatic clamping and overturning mechanism for flexible profiling processing of a hammer handle. BACKGROUND

[0002] A common hammer is composed of a hammer head and a handle, and the handle is generally made of a wooden stick. The wooden stick is cut and polished to a specific shape of the handle to facilitate the user to hold it. Currently, the wooden stick for processing the handle is mainly processed by turning by hand, which requires the experience of the worker to operate and process. The processing and cutting are not accurate, the cutting workload is large, and the efficiency is extremely low, which greatly affects the production efficiency.

[0003] To this end, we have developed a flexible profiling processing device for hammer handle production, which uses a circumferential overturning mechanism, a horizontal translation mechanism and a radial polishing mechanism to realize three-dimensional profiling processing of the wooden stick to be processed. However, the wooden stick to be processed needs to be fixed in advance to prevent it from shifting during processing, and then the upper and lower surfaces of the wooden stick to be processed are processed in two steps. In this process, when the upper surface of the wooden stick to be processed is profiled, the upper and lower surfaces of the wooden stick to be processed need to be overturned to profile the other side of the wooden stick to be processed.

[0004] Currently, the wooden stick to be processed is fixed by a wooden stick clamping mechanism, which is a conventional turbine worm clamp structure composed of a clamping fixing part, a clamping locking part and a mounting seat. When the wooden stick to be processed is fixed by the turbine worm clamp structure, it needs to be manually tightened and disassembled to clamp or release the wooden stick to be processed, which is tedious and time-consuming. It is necessary to develop an automatic clamping mechanism that can automatically clamp and quantitatively overturn the wooden stick to be processed. SUMMARY

[0005] The present application provides an automatic clamping and overturning mechanism for flexible profiling processing of a hammer handle, which has high polishing precision, is easy to use, simple to operate, saves manpower, has high measuring efficiency and high intelligence.

[0006] To achieve the above purpose, the present application adopts the following technical scheme:

[0007] The present application provides an automatic clamping and overturning mechanism for flexible profiling processing of a hammer handle, which includes a limiting clamping mechanism and a worm drive mechanism respectively corresponding to the two ends of the profiling processing body for clamping the wooden stick to be processed.

[0008] The limiting clamping mechanism includes a hollow annular limiting sleeve and an elastic limiting clip movably mounted on the periphery of the annular limiting sleeve. The wooden stick to be processed is transversely inserted inside the annular limiting sleeve. One end of the elastic limiting clip is connected to the annular limiting sleeve, and the other end is driven by the worm gear drive mechanism to clamp or release the wooden stick to be processed under the drive of the worm gear drive mechanism, and to drive the limiting clamping mechanism and the wooden stick to be processed to rotate synchronously.

[0009] Preferably, hollow fixing sleeve units are respectively provided on the contouring plates at both ends of the contouring processing body, and the two ends of the wooden stick to be processed are respectively transversely inserted into the two fixing sleeve units.

[0010] Preferably, the annular limiting sleeve has a first mounting cavity, a second mounting cavity, a third mounting cavity, and a fourth mounting cavity, wherein:

[0011] The first mounting cavity is opened circumferentially along the middle part of the annular limiting sleeve, and the elastic limiting clip is movably embedded therein;

[0012] The second mounting cavity consists of two cavities, which are respectively opened on the two inner side walls at the upper end of the first mounting cavity, and the first limiting unit of the elastic limiting card is movably embedded in the cavity.

[0013] The third mounting cavity is located at the lower end of the first mounting cavity, and a barrier block is provided between the two.

[0014] The fourth mounting cavity consists of two chambers, which are respectively opened on the two inner side walls of the third mounting cavity, and the second limiting unit of the elastic limiting card is movably embedded in each chamber.

[0015] More preferably, the annular limiting sleeve is further provided with a fifth mounting cavity and a sixth mounting cavity, wherein:

[0016] The fifth mounting cavity is formed on the inner walls of both sides at the top of the first mounting cavity, and is used to install the fixed-point locking mechanism, and communicates with the sixth mounting cavity on the side end face;

[0017] The sixth mounting cavity is annularly opened on the inner end face of the annular limiting sleeve, and its cross-section has a convex shape, which is used to limit the inner ring limiting sleeve of the annular connecting sleeve.

[0018] Preferably, the elastic limiting clip includes an integrally formed inner elastic clamping piece, a front limiting block, an outer transmission gear plate, and a rear limiting block, wherein:

[0019] The inner elastic clamping piece is an arc-shaped sheet structure with anti-slip texture distributed on its inner side. The upper end is connected to the front limiting block, and the lower end is fixed to the front side of the blocking block through a connecting sleeve and a positioning pin.

[0020] The front end of the inner and outer sides of the rear end of the front end limiting block is connected with the front end of the outer side transmission gear plate and the inner side elastic clamping sheet, and is slidably installed in the first installation cavity and the second installation cavity through the first limiting unit on both sides of the front end;

[0021] The outer side transmission gear plate is located at the outer side of the inner side elastic clamping sheet, and a plurality of transmission racks are arranged on the outer surface of the outer side transmission gear plate and are meshed and connected with the transmission worm on the worm drive mechanism.

[0022] The rear end limiting block is connected with the rear end of the outer side transmission gear plate, and is slidably installed in the third installation cavity and the fourth installation cavity through the second limiting unit on both sides of the front end.

[0023] Preferably, the limiting clamping mechanism further comprises a hollow annular connecting sleeve, the annular connecting sleeve comprises an outer ring fixed sleeve and an inner ring limiting sleeve arranged coaxially, wherein:

[0024] The outer ring fixed sleeve is fixedly connected with the corresponding fixed sleeve unit, and is arranged coaxially with the corresponding fixed sleeve unit;

[0025] One end of the inner ring limiting sleeve is connected with the outer ring fixed sleeve, and the other end is rotatably arranged in the sixth installation cavity of the inner side wall of the limiting clamping mechanism, and a locking groove matched with the locking block and a damping installation cavity matched with the damping block are formed in the side wall thereof.

[0026] Preferably, the limiting clamping mechanism further comprises a positioning pin shaft, the distal end and the proximal end of the positioning pin shaft are provided with threads, the threads are installed in the corresponding threads on the annular limiting sleeve, and the optical axis sleeve in the middle part is arranged in the connecting sleeve.

[0027] Preferably, the limiting clamping mechanism further comprises a fixed point locking mechanism, the fixed point locking mechanism comprises a locking block and a first return spring, wherein:

[0028] The locking block has a large head and a small head structure, and the two ends are movably embedded in the corresponding fifth installation cavity, and a clamping inclined surface corresponding to the front end of the front end limiting block is arranged at the connection between the large head and the small head; a spring mounting hole is formed in one end of the large head, and the other end of the small head extends into the sixth installation cavity through the corresponding fifth installation cavity, and is connected with the inner ring limiting sleeve movably embedded in the sixth installation cavity;

[0029] One end of the first return spring is embedded in the spring mounting hole and fixedly connected with the locking block, and the other end is embedded in the fifth installation cavity and fixedly connected with the annular limiting sleeve.

[0030] Preferably, the limiting clamping mechanism further comprises a fixed point damping mechanism, the fixed point damping mechanism comprises a damping block and a second return spring, wherein:

[0031] One end of the damping block is a smooth hemispherical structure, which is arranged corresponding to the damping groove on the second limiting unit, and the other end is movably embedded in the damping mounting cavity on the inner ring limiting sleeve;

[0032] The second reset spring is embedded in the damping mounting cavity, and the two ends are fixedly connected with the annular connecting sleeve and the other end of the damping block, respectively.

[0033] Preferably, the limiting and clamping mechanism further comprises a pressure sensor, which is a thin film pressure sensor, arranged on the inner surface of the annular limiting sleeve, and arranged opposite to the elastic limiting clamp.

[0034] Preferably, the limiting and clamping mechanism further comprises a holding gasket, which is a magnetic rubber gasket, which can be detachably attached to the inner surface of the elastic limiting clamp.

[0035] Preferably, the worm drive mechanism comprises a support bracket, a drive motor and a transmission worm, wherein:

[0036] The support bracket is in the shape of E, and the upper two ends are respectively provided with support rods, and the back is provided with a plurality of arrayed through holes;

[0037] The drive motor is mounted on the bottom plate of the lower part of the support bracket, the output shaft is arranged upward, and the lower end of the transmission worm is connected through the shaft coupling;

[0038] The transmission worm is arranged on the upper part of the support bracket, and the top end is mounted on the top plate of the support bracket through a bearing.

[0039] Compared with the prior art, the technical scheme has the following technical effects:

[0040] (1) The automatic clamping and overturning mechanism mainly comprises a limiting and clamping mechanism and a worm drive mechanism, the limiting and clamping mechanism comprises a hollow annular limiting sleeve and an elastic limiting clamp movably assembled on the circumference of the annular limiting sleeve, the two ends of the wood rod to be machined are transversely inserted into the limiting and clamping mechanism on both sides of the profiling machining body, and the elastic limiting clamp is driven by the worm drive mechanism to clamp or release the wood rod to be machined, so as to realize the purpose of automatically clamping the wood rod to be machined, without manual locking, saving time and effort, and high clamping efficiency;

[0041] (2) the limiting and clamping mechanism with specific structure design, by setting several installation cavities on the circumference of the annular limiting sleeve along the circumferential direction, and movably embedding the elastic limiting clamping piece in the corresponding installation cavity, on one hand, the elastic limiting clamping piece is limitedly installed in the installation cavity, on the other hand, the elastic limiting clamping piece can move along the circumferential direction in the installation cavity under the action of external force, the elastic limiting clamping piece has certain elastic expansion, and the inner side wall thereof is pressed against the inner side of the wood stick to be machined in the process of elastic expansion, so that the wood stick to be machined is clamped;

[0042] (3) the elastic limiting clamping piece on the limiting and clamping mechanism mainly comprises an integrally-formed inner side elastic clamping piece, a front end limiting block, an outer side transmission gear plate and a rear end limiting block, the inner side elastic clamping piece has certain elasticity and is located at the inner side for abutting and clamping the wood stick to be machined; and the outer side transmission gear plate has certain thickness and will not be deformed in the moving process, the transmission gear on the outer circumferential wall of the outer side transmission gear plate is meshed and connected with the worm drive mechanism, and is used for driving the inner side elastic clamping piece to expand and contract, so that the elastic limiting clamping piece realizes the dual functions of power transmission and clamping and fastening of the wood stick;

[0043] (4) the specific design of the fixed-point locking mechanism, the limiting and clamping mechanism is installed on the profiling machining body through the hollow annular connecting sleeve, and the fixed-point locking mechanism is installed at the fifth installation cavity and the sixth installation cavity on the annular limiting sleeve; when in the locking state, the worm drive mechanism can only drive the elastic limiting clamping piece to expand and contract, and the annular limiting sleeve is stationary relative to the profiling machining body, and when the wood stick to be machined needs to be turned over, the worm drive mechanism drives the elastic limiting clamping piece to continue to move to the front end and press the fixed-point locking mechanism, the fixed-point locking mechanism is pressed and retracted, and is separated from the annular connecting sleeve, so that the elastic limiting clamping piece and the wood stick clamped therein continue to rotate, and the purpose of turning over the wood stick is realized. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 Application structure diagram of the automatic clamping and turning mechanism for flexible profiling machining of a hammer handle Figure 1 ;

[0045] Figure 2 Application structure diagram of the automatic clamping and turning mechanism for flexible profiling machining of a hammer handle Figure 2 ;

[0046] Figure 3 Schematic diagram of the automatic clamping and turning mechanism for flexible profiling machining of a hammer handle Figure 1 ;

[0047] Figure 4 Schematic diagram of the automatic clamping and turning mechanism for flexible profiling machining of a hammer handle Figure 2 ;

[0048] Figure 5 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle;

[0049] Figure 6 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle;

[0050] Figure 7 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle;

[0051] Figure 8 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle; Figure 1 ;

[0052] Figure 9 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle; Figure 2 ;

[0053] Figure 10 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle; Figure 3 ;

[0054] Figure 11 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle; Figure 1 ;

[0055] Figure 12 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle; Figure 2 ;

[0056] Figure 13 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle;

[0057] Figure 14 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle; Figure 1 ;

[0058] Figure 15 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle; Figure 2 ;

[0059] Figure 16 Front view structural schematic diagram of automatic clamping and overturning mechanism for flexible profiling of hammer handle; Figure 3 ;

[0060] Figure 17 Longitudinal section structure diagram of the annular limiting sleeve in the automatic clamping and overturning mechanism for flexible profiling of hammer handle Figure 4

[0061] Figure 18 Longitudinal section structure diagram of the annular limiting sleeve in the automatic clamping and overturning mechanism for flexible profiling of hammer handle Figure 5

[0062] Figure 19 Longitudinal section structure diagram of the annular limiting sleeve in the automatic clamping and overturning mechanism for flexible profiling of hammer handle Figure 6

[0063] Figure 20 Transverse section structure diagram of the annular limiting sleeve in the automatic clamping and overturning mechanism for flexible profiling of hammer handle Figure 1

[0064] Figure 21 Transverse section structure diagram of the annular limiting sleeve in the automatic clamping and overturning mechanism for flexible profiling of hammer handle Figure 2

[0065] Figure 22 Stereoscopic structure diagram of the elastic limiting clamping piece in the automatic clamping and overturning mechanism for flexible profiling of hammer handle Figure 1

[0066] Figure 23 Stereoscopic structure diagram of the elastic limiting clamping piece in the automatic clamping and overturning mechanism for flexible profiling of hammer handle Figure 2

[0067] Figure 24 Stereoscopic structure diagram of the elastic limiting clamping piece in the automatic clamping and overturning mechanism for flexible profiling of hammer handle Figure 3

[0068] Figure 25 Stereoscopic structure diagram of the locking block in the automatic clamping and overturning mechanism for flexible profiling of hammer handle Figure 1

[0069] Figure 26 Stereoscopic structure diagram of the locking block in the automatic clamping and overturning mechanism for flexible profiling of hammer handle Figure 2 DETAILED DESCRIPTION

[0070] The present application will be described in detail and specifically below with specific examples, so that it can be better understood. However, the following examples do not limit the scope of the present application.

[0071] ​​​​​​​​​​In some embodiments thereof, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , an automatic clamping and overturning mechanism for flexible profiling of a hammer handle is provided, which is installed at both ends of a profiling body 100 and used for clamping and fixing and overturning a transversely arranged wooden stick 102 to be processed. The automatic clamping and overturning mechanism mainly comprises a limiting and clamping mechanism 200 and a worm drive mechanism 300. The limiting and clamping mechanism 200 is a specific clamping sleeve structure, and the worm drive mechanism 300 is a power drive structure used for driving the limiting and clamping mechanism 200 to act.

[0072] Specifically, as shown in Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 , the limiting and clamping mechanism 200 mainly comprises a ring-shaped limiting sleeve 210 and an elastic limiting and clamping piece 220. The ring-shaped limiting sleeve 210 is a hollow ring structure, and a plurality of installation cavities for installing the elastic limiting and clamping piece 220 are formed in the ring-shaped limiting sleeve 210. The elastic limiting and clamping piece 220 is movably installed in the installation cavities on the outer periphery of the ring-shaped limiting sleeve 210 in a movable assembly manner.

[0073] A through hole is formed in the middle of the ring-shaped limiting sleeve 210, and the wooden stick 102 to be processed is transversely arranged in the through hole. One end of the elastic limiting and clamping piece 220 is connected to the ring-shaped limiting sleeve 210, and the other end is drivingly connected to the worm drive mechanism 300. The elastic limiting and clamping piece 220 can move circumferentially in the installation cavities on the outer periphery of the ring-shaped limiting sleeve 210. By starting the worm drive mechanism 300, the elastic limiting and clamping piece 220 can be synchronously driven to move relative to the ring-shaped limiting sleeve 210 under the driving of the worm drive mechanism 300. Since one end of the elastic limiting and clamping piece 220 is fixed, the other end drives the middle portion to move inward during the movement, so as to clamp or release the wooden stick 102 to be processed arranged transversely in the through hole.

[0074] As shown in Figure 9 and Figure 10 , according to needs, the limiting and clamping mechanism 200 and the wooden stick 102 to be processed are continuously driven to move synchronously with the elastic limiting and clamping piece 220, the fixed relationship between the ring-shaped limiting sleeve 210 and the ring-shaped connecting sleeve 230 is unlocked by extruding the fixed-point locking mechanism 250, so as to synchronously drive the ring-shaped limiting sleeve 210 and the wooden stick 102 to be processed fixed in the middle portion to be overturned.

[0075] In some embodiments thereof, as shown in Figure 1 and Figure 2 ,As shown, the profiling machining body 100 is a flexible profiling machining device for hammer handle production, which can realize automatic profiling machining and polishing of wooden hammer handles. Hollow fixing sleeve units 101 are arranged on the profiling plates at both ends of the profiling machining body 100, and the two ends of the wood rod 102 to be machined are respectively transversely arranged in the two fixing sleeve units 101 and are automatically clamped and fixed by a limiting clamping mechanism 200.

[0076] In some embodiments, as shown in Figure 6 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 To achieve the limiting installation of the elastic limiting clamping piece 220, a first installation cavity 211, a second installation cavity 212, a third installation cavity 213 and a fourth installation cavity 214 are arranged on the annular limiting sleeve 210, and the limiting installation of the elastic limiting clamping piece 220 can be achieved through the first installation cavity 211, the second installation cavity 212, the third installation cavity 213 and the fourth installation cavity 214, and the rotation of the elastic limiting clamping piece 220 in the circumferential direction is not affected.

[0077] Specifically, the first installation cavity 211 is arranged on the outer circumferential body of the annular limiting sleeve 210 and is in communication with the through hole on the inner side and the external space. The elastic limiting clamping piece 220 is movably embedded in the first installation cavity 211 and can move in the circumferential direction in the first installation cavity 211.

[0078] The second installation cavity 212 is two, which are respectively arranged on the two inner side walls of the upper end of the first installation cavity 211. The first limiting unit 226 on both sides of the elastic limiting clamping piece 220 is movably embedded in the second installation cavity 212 on both sides, which realizes the limiting effect of the elastic limiting clamping piece 220 and guides the elastic limiting clamping piece 220 to move in the circumferential direction along the second installation cavity 212 during movement, thereby ensuring the structural stability of the elastic limiting clamping piece 220 during use.

[0079] The third installation cavity 213 is arranged at the lower end of the first installation cavity 211 and is provided with a blocking block 217 between the first installation cavity 211, which plays a limiting role in movement and avoids excessive circumferential rotation of the elastic limiting clamping piece 220, thereby limiting the rotation angle of the elastic limiting clamping piece 220. The third installation cavity 213 is a groove and is not in communication with the inner hole of the annular limiting sleeve 210.

[0080] The fourth installation cavity 214 is two, corresponding to the two inner walls of the third installation cavity 213, and the second limiting unit 228 of the elastic limiting piece 220 is movably embedded in the fourth installation cavity 214. The second limiting unit 228 is arranged on the two side walls of the rear end limiting block 224, and the second limiting unit 228 can move in a certain range in the fourth installation cavity 214, thereby limiting the rear end of the elastic limiting piece 220, and cooperating with the second installation cavity 212 at the front end to achieve the purpose of limiting the front and rear ends.

[0081] In some embodiments, as shown in Figure 14 、 Figure 15 、 Figure 17 To achieve the limiting installation of the fixed-point locking mechanism 250, the fifth installation cavity 215 and the sixth installation cavity 216 are further arranged on the annular limiting sleeve 210.

[0082] Specifically, the fifth installation cavity 215 is arranged on the two inner walls of the top end of the first installation cavity 211, used for installing the fixed-point locking mechanism 250, and the fifth installation cavity 215 on one side is in communication with the sixth installation cavity 216 on the side surface, so as to facilitate the buckle connection of the fixed-point locking mechanism 250 with the annular connecting sleeve 230 during extension and contraction.

[0083] To achieve the limiting connection of the annular connecting sleeve 230 and the annular limiting sleeve 210, the sixth installation cavity 216 is arranged on the inner side surface of the annular limiting sleeve 210 in a ring shape along the circumference, and the cross section of the sixth installation cavity 216 is in a convex shape. The cross section of the side end of the corresponding annular connecting sleeve 230 is also in a corresponding convex shape, and the gap is assembled in the sixth installation cavity 216, used for limiting the inner ring limiting sleeve 232 of the annular connecting sleeve 230, preventing the annular connecting sleeve 230 from falling off the annular limiting sleeve 210. The annular limiting sleeve 210 and the annular connecting sleeve 230 are coaxially arranged, and the side end thereof can be buckled and embedded in the sixth installation cavity 216, and can rotate relative to the annular limiting sleeve 210.

[0084] In some embodiments, as shown in Figure 6 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 22 、 Figure 23 and Figure 24 The elastic limiting piece 220 is an integral structure, mainly including an integral inner side elastic clamping piece 221, a front end limiting block 222, an outer side transmission gear plate 223, and a rear end limiting block 224, which are made of stainless steel or aluminum alloy.

[0085] The inner side elastic clamping piece 221 is an arc-shaped piece structure, the upper end of the inner side elastic clamping piece 221 is fixedly connected with the front end limiting block 222, and the lower end is provided with a connecting sleeve 225 which is a hollow structure and is fixed to the front side position of the blocking block 217 through a positioning pin shaft 240.

[0086] The inner side of the inner side elastic clamping piece 221 is provided with anti-skid lines, which can increase the friction between the inner side elastic clamping piece 221 and the wood rod 102 to be processed, and prevent the wood rod 102 to be processed from shaking during clamping. The inner side elastic clamping piece 221 has a small thickness and a certain memory elasticity, can be deformed under the traction of one end, and can restore the deformation after the traction disappears.

[0087] The front end limiting block 222 is movably embedded in the first mounting cavity 211 and the second mounting cavity 212, and can slide in the first mounting cavity 211 and the second mounting cavity 212 along the circumference through the first limiting unit 226 on the front end of the two sides, and the first limiting unit 226 can adopt a limiting column or a square limiting sliding block. The inner side elastic clamping piece 221 and the outer side transmission gear plate 223 are connected to the front end of the inner side and the outer side of the rear end of the front end limiting block 222 respectively, so that the inner side elastic clamping piece 221 and the outer side transmission gear plate 223 form a concentric arrangement structure.

[0088] The outer side transmission gear plate 223 serves as a driving transmission mechanism connected with the worm drive mechanism 300, is located at the outer side of the inner side elastic clamping piece 221, and is arranged in a spaced manner. In order to realize the connection with the worm drive mechanism 300, a plurality of transmission racks 227 are arranged on the outer surface of the outer side transmission gear plate 223 and are meshed and connected with the transmission worm 303 on the worm drive mechanism 300.

[0089] In addition, it is worth noting that in order to realize the 180° overturning of the upper and lower surfaces of the wood rod 102 to be processed, the two ends of the transmission rack 227 extend to the outer surfaces of the front end limiting block 222 and the rear end limiting block 224. The transmission rack 227 is semicircular in shape and has an arc of at least 180°. Under the drive of the transmission worm 303, the elastic limiting clamp 220 is driven by the transmission rack 227 to continue to overturn the annular limiting sleeve 210 upward after locking the wood rod, so as to realize the purpose of overturning the lower surface of the wood rod 102 to be processed to the upper surface, thereby facilitating the processing and polishing of the other surface of the wood rod.

[0090] The rear end limiting block 224 is a limiting component of the tail end of the elastic limiting clamp 220, which is fixedly connected to the rear end of the outer transmission gear plate 223 and is embedded in the third mounting cavity 213. The two side walls of the rear end limiting block 224 are respectively provided with a second limiting unit 228, which is in a cylindrical or block structure and is transversely embedded in the fourth mounting cavity 214 on both sides, thereby limiting the rear end limiting block 224 and preventing it from slipping out of the third mounting cavity 213.

[0091] In some embodiments, as shown in Figure 3 、 Figure 4 、 Figure 17 、 Figure 18 、 Figure 19 and Figure 20 , the limiting clamping mechanism 200 further comprises a hollow annular connecting sleeve 230. The annular connecting sleeve 230 mainly comprises an outer ring fixed sleeve 231 and an inner ring limiting sleeve 232, which are designed as an integral structure and coaxially arranged.

[0092] Specifically, the outer ring fixed sleeve 231 is fixedly connected to the corresponding fixed sleeve unit 101 and coaxially arranged with the corresponding fixed sleeve unit 101. The outer ring fixed sleeve 231 can be detachably mounted on the fixed sleeve unit 101 by bolts or directly welded by welding, as needed.

[0093] One end of the inner ring limiting sleeve 232 is connected to the outer ring fixed sleeve 231, and the other end is rotatably arranged in the sixth mounting cavity 216 of the inner side wall of the limiting clamping mechanism 200, so that the limiting clamping mechanism 200 can rotate relative to the annular connecting sleeve 230, which is a prerequisite for the 180° overturning of the limiting clamping mechanism 200 and the wood rod 102 to be machined.

[0094] In addition, in order to realize the installation of the fixed-point locking mechanism 250 and the fixed-point damping mechanism 260, a locking groove 233 matched with the locking block 251 and a damping mounting cavity 234 matched with the damping block 261 are formed in the side wall of the outer ring fixed sleeve 231. The locking block 251 at one end of the fixed-point locking mechanism 250 can be telescopically embedded in the locking groove 233 to prevent relative movement with the annular connecting sleeve 230, and in this state, the action of clamping the wood rod 102 to be machined is performed.

[0095] In some embodiments, as shown in Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 、 Figure 9 、 Figure 12 、 Figure 14 、 Figure 15 、 Figure 16And Figure 17 To ensure that the inner elastic clamping piece 221 can be deformed to press the inner side of the wood bar 102 to be processed under the traction of external force at the upper end, the lower end of the elastic limiting clamp 220 needs to be fixed to the annular limiting sleeve 210. At the same time, to improve the service life of the inner elastic clamping piece 221 and avoid mechanical fatigue of the lower end thereof under excessive force, the lower end of the inner elastic clamping piece 221 is movably installed in the corresponding thread of the annular limiting sleeve 210 by using the positioning pin shaft 240.

[0096] Specifically, to ensure the stability of the positioning pin shaft 240, threads are respectively formed on the screw rods at the distal end and the proximal end of the positioning pin shaft 240, and the threads are installed in the corresponding threaded holes in the two inner side walls of the lower end of the first installation cavity 211. The middle part of the positioning pin shaft 240 is designed as a light shaft and is arranged in the connecting sleeve 225 to effectively reduce the friction between the positioning pin shaft 240 and the connecting sleeve 225.

[0097] In some embodiments, as shown in Figure 9 , Figure 11 , Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 20 and Figure 21 to achieve the locking connection between the elastic limiting clamp 220 and the annular connecting sleeve 230.

[0098] The limiting and clamping mechanism 200 further comprises a fixed-point locking mechanism 250. The fixed-point locking mechanism 250 is buckled to the annular connecting sleeve 230 at the front end when not being pressed by the front limiting block 222. The elastic limiting clamp 220 is fixed to the annular connecting sleeve 230 by the fixed-point locking mechanism 250 to prevent the elastic limiting clamp 220 from rotating. When the fixed-point locking mechanism 250 is pressed by the front limiting block 222, one end of the fixed-point locking mechanism 250 is retracted and separated from the annular connecting sleeve 230. In this state, rotating the front limiting block 222 can simultaneously drive the elastic limiting clamp 220 to rotate, and then drive the wood bar 102 clamped and fixed therein to realize the purpose of up-down flipping conversion.

[0099] Specifically, as shown in Figure 25 and Figure 26 , the fixed-point locking mechanism 250 mainly comprises a locking block 251 and a first return spring 253. The locking block 251 has a structure with one large end and one small end, and the two ends are movably embedded in the corresponding fifth installation cavity 215. A tightening inclined surface 254 corresponding to the front end of the front limiting block 222 is arranged at the connection between the large end and the small end, and the tightening inclined surface 254 is arranged opposite to the front end of the front limiting block 222.

[0100] The big end of the locking block 251 is provided with a spring mounting hole 252, and the small end extends into the sixth mounting cavity 216 through the corresponding fifth mounting cavity 215 and is buckled with the inner ring limiting sleeve 232 movably arranged in the sixth mounting cavity 216.

[0101] During the rotation of the front limiting block 222, the front limiting block 222 abuts against the clamping inclined surface 254 and pushes the clamping inclined surface 254 to move to one side until the small end of the clamping inclined surface 254 is pulled out of the sixth mounting cavity 216 on the other side and is disconnected with the inner ring limiting sleeve 232.

[0102] The first reset spring 253 drives the reset of the locking block 251. One end of the first reset spring 253 is movably arranged in the spring mounting hole 252 and is fixedly connected with the locking block 251, and the other end is movably arranged in the fifth mounting cavity 215 and is fixedly connected with the ring limiting sleeve 210.

[0103] When the front limiting block 222 does not abut against the locking block 251, the locking block 251 is always pressed at the small end of the locking block 251 by the first reset spring 253 at the big end, that is, the buckling connection with the ring connecting sleeve 230 is achieved, so that the relative rotation of the two is avoided. It is ensured that the wood stick 102 to be processed can be clamped and fixed in the elastic limiting clamp 220 and cannot be clamped tightly due to the rotation of the elastic limiting clamp 220.

[0104] In some embodiments, as shown in Figure 18 、 Figure 19 、 Figure 21 and Figure 24 , the limiting and clamping mechanism 200 further comprises a fixed-point damping mechanism 260. When the rear end limiting block 224 at the rear end of the elastic limiting clamp 220 retreats to a certain position, the fixed-point damping mechanism 260 is buckled on the rear end limiting block 224 and starts a certain damping action. When the pulling force applied to the rear end limiting block 224 is increased, the rear end limiting block 224 can be disconnected with the fixed-point damping mechanism 260.

[0105] Specifically, the fixed-point damping mechanism 260 mainly comprises a damping block 261 and a second reset spring 262. One end of the damping block 261 is a smooth hemispherical structure and is arranged corresponding to the damping groove 229 on the second limiting unit 228 and can be easily disconnected from the damping groove 229 under the action of the pulling force. The other end of the damping block 261 is movably arranged in the damping mounting cavity 234 on the inner ring limiting sleeve 232.

[0106] The second reset spring 262 is embedded in the damping mounting cavity 234, and its two ends are fixedly connected with the annular connecting sleeve 230 and the other end of the damping block 261 respectively. Under the action of the second reset spring 262, the damping block 261 always abuts against the side end face of the second limiting unit 228.

[0107] In some embodiments, in order to ensure that the elastic limiting clamp 220 can clamp the wood rod 102 to be processed, the limiting and clamping mechanism 200 further comprises a pressure sensor, not shown in the figure, which is arranged on the inner surface of the annular limiting sleeve 210 and is arranged opposite to the elastic limiting clamp 220.

[0108] Specifically, the pressure sensor adopts a thin film pressure sensor. When the annular limiting sleeve 210 is tightened, the thin film pressure sensor is tightly pressed against the wood rod 102 to be processed, and the clamping force on the wood rod 102 to be processed is detected in real time, so as to control the extension and contraction degree of the elastic limiting clamp 220, and effectively and moderately clamp the wood rod 102 to be processed.

[0109] In some embodiments, in order to ensure that the limiting and clamping mechanism 200 can drive the wood rod 102 to be processed to flip synchronously during the flipping process, and avoid the problem that the wood rod 102 to be processed clamped in the limiting and clamping mechanism 200 slips or moves relatively during the flipping process of the limiting and clamping mechanism 200, the limiting and clamping mechanism 200 further comprises a holding pad, not shown in the figure, which is detachably attached to the inner surface of the elastic limiting clamp 220.

[0110] The holding pad adopts a magnetic rubber pad, which is arranged between the inner surface of the elastic limiting clamp 220 and the wood rod 102 to be processed. Preferably, the magnetic rubber pad can also be arranged at the position where the inner surface of the annular limiting sleeve 210 contacts the wood rod 102 to be processed, as needed. In this way, the friction between the limiting and clamping mechanism 200 and the wood rod 102 to be processed is increased, and the wood rod 102 to be processed clamped in the limiting and clamping mechanism 200 is prevented from slipping during the flipping process of the limiting and clamping mechanism 200.

[0111] In some embodiments, as shown in Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 , the worm drive mechanism 300 is used as a driving mechanism of the limiting and clamping mechanism 200, and mainly comprises a supporting bracket 301, a driving motor 302 and a transmission worm 303.

[0112] Specifically, the support bracket 301 is in an E-shaped structure, which is welded by stainless steel or aluminum alloy material, and the bottom is fixed on the profiling body 100 by screws. The support bracket 301

[0113] The upper two ends of the support bracket 301 are respectively provided with support rods 305, which are installed on the top mounting plate and the middle mounting plate by nuts. And a plurality of arrayed through holes 306 are formed on the back plate of the back of the support bracket 301.

[0114] The driving motor 302 is a servo motor, which is installed on the bottom plate of the lower part of the support bracket 301. And the driving motor 302 is arranged upward, and the output shaft is connected to the lower end of the transmission worm 303 through a shaft coupling, for driving the transmission worm 303 to rotate.

[0115] The transmission worm 303 is used as a driving elastic limiting clamp 220 driving mechanism, for driving the elastic limiting clamp 220 to rotate in the circumferential direction, so as to achieve the purpose of clamping the wood bar 102 to be processed. The transmission worm 303 is arranged on the upper part of the support bracket 301, and the top end is installed on the top plate of the support bracket 301 through a bearing 304, and the lower end is connected to the driving motor 302 through a shaft coupling.

[0116] The working principle of the automatic clamping and overturning mechanism for flexible profiling of hammer handle is as follows:

[0117] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 shown, before polishing the wood bar 102 to be processed, the two ends of the wood bar 102 to be processed are arranged transversely in the fixing sleeve units 101 at both ends of the profiling body 100. The driving motor 302 on the worm drive mechanism 300 is started by the controller, the transmission worm 303 is driven to rotate by the driving motor 302, and the elastic limiting clamp 220 is synchronously driven to rotate in the process of rotating.

[0118] As shown in Figure 8 , Figure 9 , Figure 10 , Figure 14 , Figure 15 , Figure 16 and Figure 17As shown, the fixed-point locking mechanism 250 is buckled between the annular limiting sleeve 210 and the annular connecting sleeve 230 without being extruded by external force, and the two will not produce relative rotation; the elastic limiting clamping piece 220 is driven to rotate circumferentially by the transmission worm 303, so as to realize the purpose of clamping the wood stick 102 to be processed, and facilitate the profiling processing body 100 to process and polish one side of the fixed wood stick 102 to be processed.

[0119] When one side of the wood stick 102 to be processed is processed and polished, and the other side of the wood stick 102 to be processed needs to be processed and polished, the driving motor 302 is continuously started to drive, so as to continuously drive the elastic limiting clamping piece 220 to rotate circumferentially in the installation cavity and abut and push the fixed-point locking mechanism 250, the fixed-point locking mechanism 250 is unlocked after being extruded, so as to synchronize the annular limiting sleeve 210 and the fixed wood stick 102 in the middle to continue to rotate circumferentially and turn over, thereby realizing the purpose of turning over the wood stick 102 to be processed, and facilitating the other side to be processed.

[0120] The specific embodiments of the present application are described in detail above, but it is only as an example, and the present application is not limited to the specific embodiments described above. Any equivalent modification and replacement of the present application for those skilled in the art are also within the scope of the present application. Therefore, any equivalent transformation and modification without departing from the spirit and scope of the present application should be covered within the scope of the present application.

Claims

1. An automatic clamping and flipping mechanism for flexible profiling of a hammer handle, characterized in that, The application relates to a wood bar profiling device, which comprises a limiting and clamping mechanism (200) and a worm drive mechanism (300) respectively arranged at two ends of a profiling body (100) for clamping a wood bar (102) to be processed, wherein: The limiting and clamping mechanism (200) comprises a hollow annular limiting sleeve (210) and an elastic limiting clamp (220) movably arranged on the peripheral body of the annular limiting sleeve (210), the wood bar (102) to be processed is transversely arranged in the annular limiting sleeve (210), one end of the elastic limiting clamp (220) is connected with the annular limiting sleeve (210), the other end of the elastic limiting clamp (220) is drivingly connected with the worm drive mechanism (300), the wood bar (102) to be processed is clamped or released under the driving of the worm drive mechanism (300), and the limiting and clamping mechanism (200) and the wood bar (102) to be processed are synchronously turned over; First, second, third and fourth installation cavities (211, 212, 213 and 214) are formed in the annular limiting sleeve (210), wherein: The first installation cavity (211) is formed in the middle of the peripheral body of the annular limiting sleeve (210) and movably embeds the elastic limiting clamp (220); The second installation cavities (212) are two and are respectively formed in the two inner side walls of the upper end of the first installation cavity (211), and the first limiting units (226) of the elastic limiting clamp (220) are movably embedded in the second installation cavities (212); The third installation cavity (213) is formed at the lower end of the first installation cavity (211) and is provided with a blocking block (217) between the first installation cavity (211) and the third installation cavity (213); The fourth installation cavities (214) are two and are respectively formed in the two inner side walls of the third installation cavity (213), and the second limiting units (228) of the elastic limiting clamp (220) are movably embedded in the fourth installation cavities (214); Fifth and sixth installation cavities (215 and 216) are further formed in the annular limiting sleeve (210), wherein: The fifth installation cavities (215) are formed in the two inner side walls of the top end of the first installation cavity (211) and are used for installing a fixed-point locking mechanism (250) and are in communication with the sixth installation cavities (216) of the side end faces; The sixth installation cavities (216) are annularly formed in the inner side end faces of the annular limiting sleeve (210) and have a convex cross-section structure and are used for limiting and installing the inner ring limiting sleeve (232) of the annular connecting sleeve (230); The limiting and clamping mechanism (200) further comprises a hollow annular connecting sleeve (230), the annular connecting sleeve (230) comprises an outer ring fixed sleeve (231) and an inner ring limiting sleeve (232) arranged in the same axis, wherein: The outer ring fixed sleeve (231) is fixedly connected with the corresponding fixed sleeve unit (101) and is arranged in the same axis with the corresponding fixed sleeve unit (101). One end of the inner ring limiting sleeve (232) is connected to the outer ring fixing sleeve (231), and the other end is rotatably arranged in the sixth installation cavity (216) of the inner side wall of the limiting clamping mechanism (200), and a locking groove (233) matched with the locking block (251) and a damping installation cavity (234) matched with the damping block (261) are formed in the side wall thereof; The limiting clamping mechanism (200) further comprises a fixed-point locking mechanism (250), and the fixed-point locking mechanism (250) comprises a locking block (251) and a first return spring (253), wherein: The locking block (251) has a large head and a small head structure, and the two ends are movably embedded in the corresponding fifth installation cavity (215), and a clamping inclined surface (254) corresponding to the front end of the front limiting block (222) is arranged at the connection position of the large head and the small head; a spring installation hole (252) is formed in one end of the large head, and the other end of the small head extends into the sixth installation cavity (216) through the corresponding fifth installation cavity (215) and is buckled with the inner ring limiting sleeve (232) movably embedded in the sixth installation cavity (216); One end of the first return spring (253) is embedded in the spring installation hole (252) and fixedly connected with the locking block (251); the other end is embedded in the fifth installation cavity (215) and fixedly connected with the ring limiting sleeve (210).

2. The automatic clamping and turnover mechanism for flexible profiling of hammer handle according to claim 1, characterized in that, The profiling plates at both ends of the profiling processing body (100) are respectively provided with hollow fixing sleeve units (101), and the two ends of the wood stick (102) to be processed are respectively transversely arranged in the two fixing sleeve units (101).

3. The automatic clamping and turnover mechanism for flexible profiling of hammer handle according to claim 1, characterized in that, The elastic limiting clamping piece (220) comprises an integrally formed inner side elastic clamping piece (221), a front end limiting block (222), an outer side transmission gear plate (223) and a rear end limiting block (224), wherein: The inner side elastic clamping piece (221) is an arc-shaped sheet structure, and the inner side thereof is provided with anti-skid lines; the upper end is connected to the front end limiting block (222), and the lower end is fixed to the front side position of the blocking block (217) through the connecting sleeve (225) and the positioning pin shaft (240); The inner side and outer side of the rear end of the front end limiting block (222) are respectively connected to the front end of the inner side elastic clamping piece (221) and the outer side transmission gear plate (223), and the first limiting unit (226) on both sides of the front end is slidably arranged in the first installation cavity (211) and the second installation cavity (212); The outer side transmission gear plate (223) is located at the outer side of the inner side elastic clamping piece (221), and a plurality of transmission racks (227) meshed and connected with the transmission worm (303) on the worm drive mechanism (300) are arranged on the outer surface thereof; The rear end limiting block (224) is connected to the rear end of the outer side transmission gear plate (223), and the second limiting unit (228) on both sides of the front end is slidably arranged in the third installation cavity (213) and the fourth installation cavity (214).

4. The automatic clamping and turnover mechanism for flexible profiling of hammer handle according to claim 1, characterized in that, The limiting and clamping mechanism (200) further comprises a positioning pin shaft (240), which is provided with threads at the distal end and the proximal end, is screwed into the corresponding threads on the annular limiting sleeve (210), and has a middle optical axis sleeve arranged in the connecting sleeve (225).

5. The automatic clamping and turnover mechanism for flexible profiling of hammer handle according to claim 1, characterized in that, The limiting and clamping mechanism (200) further comprises a fixed damping mechanism (260), which comprises a damping block (261) and a second return spring (262), wherein: One end of the damping block (261) is a smooth hemispherical structure, which is arranged in correspondence with the damping groove (229) on the second limiting unit (228), and the other end is movably embedded in the damping mounting cavity (234) on the inner ring limiting sleeve (232); The second return spring (262) is embedded in the damping mounting cavity (234), and the two ends are fixedly connected with the annular connecting sleeve (230) and the other end of the damping block (261), respectively.

6. The automatic clamping and turnover mechanism for flexible profiling of hammer handle according to claim 1, characterized in that, The worm drive mechanism (300) comprises a support bracket (301), a drive motor (302) and a transmission worm (303), wherein: The support bracket (301) is in an E-shaped structure, and the upper two ends thereof are respectively provided with support rods (305), and the back is provided with a plurality of arrayed through holes (306); The drive motor (302) is installed on the bottom plate of the lower part of the support bracket (301), the output shaft thereof is arranged upward, and the lower end of the transmission worm (303) is connected through a shaft coupling; The transmission worm (303) is arranged on the upper part of the support bracket (301), and the top end thereof is installed on the top plate of the support bracket (301) through a bearing (304).

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