Ice hockey stick based on arch structure and manufacturing method of ice hockey stick

Abstract

The invention relates to the technical field of ice hockey sports equipment, in particular to an ice hockey stick based on an arch structure and a manufacturing method of the ice hockey stick. The arch-shaped part is used for concentrating the deformation range so as to increase the ejection speed of the ball, and the arch-shaped part comprises a front arch-shaped groove and a back arch-shaped groove which are formed in the front hitting side and the back hitting side respectively; the front arch-shaped groove and the back arch-shaped groove are arranged in an axial symmetry manner by taking the extension line of the center line of the linear holding part as a symmetry axis; the rod edge comprises a rod edge core part and a rod edge surface layer covering the rod edge core part; through structural mechanics optimization, the bow-shaped rebound effect is similar to bow-pulling archery, the kinetic energy conversion efficiency is higher, the vibration of a club body during ball hitting is reduced through double-face symmetrical bending, and the control precision and the energy transmission efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ice hockey equipment, in particular to an ice hockey stick based on an arcuate structure and a manufacturing method thereof. BACKGROUND

[0002] The conventional ice hockey stick relies on the elastic deformation of the whole stick body to store energy when hitting the ball, which has problems such as dispersed energy release direction, limited rebound speed, etc.

[0003] Chinese Patent Publication No. CN114042300A discloses a lightweight carbon fiber hockey stick and a manufacturing method for the stick portion of the hockey stick, which includes a stick portion and a hitting portion made of carbon fiber material. The hitting portion is arranged at one end of the stick portion, and the stick portion is hollow. At least one reinforcing rod is arranged at each corner position inside the stick portion to extend along the length direction of the stick portion to improve the overall rigidity of the stick portion. The hollow structure of the stick portion can effectively reduce the overall weight of the hockey stick to achieve the purpose of further lightweight design. However, the overall rigidity of the stick portion is slightly weak due to the hollow structure inside the stick portion. Therefore, an integrated reinforcing rod structure is formed at each corner position inside the stick portion. The reinforcing rod extends from the top to the bottom of the stick portion along the length direction of the stick portion. The reinforcing rod can improve the rigidity of the stick portion to some extent, so that the hockey stick product can meet the corresponding index requirements in the three-point bending test. It can be seen that the lightweight carbon fiber hockey stick and the manufacturing method for the stick portion of the hockey stick have problems such as the elastic deformation of the whole stick body to store energy when hitting the ball, dispersed energy release direction, and limited rebound speed. SUMMARY

[0004] To overcome the problems of the conventional ice hockey stick, such as the elastic deformation of the whole stick body to store energy when hitting the ball, dispersed energy release direction, and limited rebound speed, the present application provides an ice hockey stick based on an arcuate structure and a manufacturing method thereof.

[0005] To achieve the above-mentioned purpose, the present application provides an ice hockey stick based on an arcuate structure, which comprises: a stick body in a hollow structure, including a straight holding portion and an arcuate portion connected to the straight holding portion to increase the length involved in rebound and concentrate the deformation range to increase the shooting speed of the ball. The arcuate portion includes a front arcuate groove and a back arcuate groove arranged on the front and back hitting sides, respectively, wherein the front arcuate groove and the back arcuate groove are arranged in axial symmetry with the extension line of the center line of the straight holding portion as the axis of symmetry; a blade connected to the stick body, including a blade core and a blade surface layer covering the blade core.

[0006] Further, the shaft further comprises a connecting portion arranged between the arc-shaped portion and the blade.

[0007] The application further provides a manufacturing method of the ice hockey stick based on the arc-shaped structure, comprising: The carbon fiber yarn sheets of the pre-impregnated resin are stacked and hot-pressed into a rectangular sheet-shaped base material. The width and duration of the overflow resin at the corresponding overflow position outside the edge of the rectangular sheet-shaped base material are detected. The hot-pressing state of the hot-pressing area corresponding to each overflow position is determined according to the width and duration of the overflow resin at each overflow position, including a resin flow obstruction state and an extrusion abnormality state. The flow obstruction area in the rectangular sheet-shaped base material is determined according to the overflow position whose width meets the preset width condition. The starting laying rectangular edge of the rectangular sheet-shaped base material on the mandrel is determined according to the length of the flow obstruction area and the volume of the resin overflowed from the two advancing rectangular edges of the rectangular sheet-shaped base material. The rectangular sheet-shaped base material is gradually laid on the mandrel from the starting laying rectangular edge. The total length of the overflow position meeting the preset width condition on the two adjacent rectangular edges of the adjacent two rectangular sheet-shaped base materials is determined to determine the laying rate. The deformation difference between the edge position and the core position of the rectangular sheet-shaped base material on the mandrel during the laying process is obtained. The laying pressure is adjusted according to the deformation difference. The rectangular sheet-shaped base material is completely laid on the mandrel according to the laying pressure to form an unshaped shaft, and the unshaped shaft is sequentially subjected to heating and curing, mandrel extraction, mold pressing, and surface treatment to form a shaft. The blade is bonded to the shaft by carbon cloth to output an ice hockey stick.

[0008] Further, the hot-pressing state of the hot-pressing area corresponding to each overflow position is determined according to the width of the overflow resin at each overflow position, including, The width of the overflow resin at each overflow position is compared with the preset first width and the preset second width, respectively, and the duration of the overflow resin at each overflow position is compared with the preset duration. If the width of the overflow resin is greater than the preset first width and less than the preset second width, and the duration of the resin overflow at the current overflow position is greater than or equal to the preset second duration, it is determined that the hot-pressing state of the hot-pressing area corresponding to the current overflow position is the resin flow obstruction state. If the width of the overflow resin is greater than or equal to the preset second width, and the resin overflow duration of the current overflow position is greater than the preset first duration and less than the preset second duration, it is determined that the hot pressing state of the hot pressing area corresponding to the current overflow position is the extrusion abnormal state.

[0009] Further, the preset first width is less than the preset second width; and the preset first duration is less than the preset second duration.

[0010] Further, the hot pressing area corresponding to the hot pressing state of the resin flow obstruction state is determined as the flow obstruction area.

[0011] Further, if the flow obstruction area corresponding to the first advancing rectangular edge and the flow obstruction area corresponding to the second advancing rectangular edge have an overlapping area, the second condition advancing rectangular edge is determined as the starting paving rectangular edge according to the resin volume of the overflow of the first condition advancing rectangular edge being greater than the resin volume of the overflow of the second condition advancing rectangular edge.

[0012] Further, if the total length of the overflow position satisfying the preset width condition is greater than a preset length, the paving rate is increased, wherein the paving rate and the total length of the overflow position have a positive correlation.

[0013] Further, the deformation difference amount between the edge position and the core position of the rectangular sheet-shaped substrate is an absolute value of the difference between the deformation amount of the edge area and the deformation amount of the non-edge area.

[0014] Further, the paving pressure is adjusted according to the deformation difference amount, including, comparing the deformation difference amount with a preset difference amount; if the deformation difference amount is greater than the preset difference amount, the paving pressure is reduced; wherein the paving pressure and the deformation difference amount have a negative correlation.

[0015] Compared with the prior art, the ice hockey stick manufacturing method has the beneficial effects that: by setting the hot pressing state of the hot pressing area corresponding to each overflow position according to the width of the overflow resin, the resin flow in the narrow rectangular area formed by the texture and the staggered line in the rectangular sheet-shaped base material is controlled, and the restriction caused by the texture and the staggered line may hinder the flow area of the resin after heating, so when the width of the area where the overflow resin and the texture and the staggered line form the restriction flow is close or smaller, the resin overflow caused by the internal resin flow hindrance is more likely to occur; in addition, the extrusion abnormal state refers to the resin flow out of the edge area of the rectangular sheet-shaped base material due to the excessive hot pressing speed of the edge area when the width of the overflow resin is large after excluding the case of resin overflow, so that the distribution of the internal resin is uneven; by determining the starting laying rectangular edge of the rectangular sheet-shaped base material on the mandrel according to the length of the flow hindrance area and the volume of the overflow resin on the two advancing rectangular edges of the rectangular sheet-shaped base material, the starting laying rectangular edge is accurately determined, and the edge area shortage caused by the overflow resin on the two advancing rectangular edges and the uneven distribution of the internal resin caused by the resin flow area in the rectangular sheet-shaped base material are reduced, so that if the rectangular edge with a larger overflow volume is laid first during laying, the stability of the laying position in the subsequent laying process is reduced due to the strong rigidity of the part at the starting position; by determining the laying rate according to the total length of the overflow position meeting the preset width condition on the two adjacent rectangular edges of the adjacent two rectangular sheet-shaped base materials, the resin flow condition is still possible when heated again due to the existence of the resin flow area in the rectangular sheet-shaped base material, so the exposure time of the resin after softening by heating is shortened by increasing the laying rate, so that the range and probability of resin migration under pressure are reduced; by adjusting the laying pressure according to the type variation difference, the deformation degree difference caused by the difference in rigidity consistency between different positions on the rectangular sheet-shaped base material when subjected to hot pressing is reduced, so that the quality of laying at different positions is uneven, and the manufacturing precision and quality of the ice hockey stick based on the arc structure are improved.

[0016] Further, the method determines the starting laying rectangular edge by comprehensively determining the flow hindrance area and the overflow resin volume, which reduces the influence of the rigidity of the side with a larger overflow volume being greater than that of the position with a smaller overflow volume, reduces the problem of insufficient elasticity of the arc part of the ice hockey stick, and further improves the manufacturing precision and quality of the ice hockey stick based on the arc structure.

[0017] Further, the ice hockey stick of the present application, by setting a curved structure on the stick body near the blade, the curved surface of the stick is longer than the straight surface under the condition of the same natural length, and after bending, the fibers in the stick are combined with the bow surface like the fibers in the bow and arrow, so that the rebound speed is faster; at the same time, by setting the bow-shaped part, the deformation is concentrated in the predetermined area, the energy transmission path is optimized, the energy transmission efficiency is improved, and the energy transmission efficiency of the ice hockey stick is improved; at the same time, the stick body with the bow-shaped part can more efficiently transmit the force applied by the player to the blade, reduce the energy dispersion caused by the vibration or distortion of the stick body, synchronize the rebound with the swing action, and ensure that the energy is concentrated and released at the moment of hitting the ball, rather than dispersed in the swing process; at the same time, the structural fatigue life of the ice hockey stick is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural perspective view of an ice hockey stick based on a bow-shaped structure according to an embodiment of the present application; Figure 2 FIG. 2 is a perspective view of a stick body of an ice hockey stick based on a bow-shaped structure according to an embodiment of the present application; Figure 3 FIG. 3 is a front view of a stick body of an ice hockey stick based on a bow-shaped structure according to an embodiment of the present application; Figure 4 FIG. 4 is a side view of a stick body of an ice hockey stick based on a bow-shaped structure according to an embodiment of the present application; Figure 5 FIG. 5 is a cross-sectional view of a bow-shaped part of a stick body of an ice hockey stick based on a bow-shaped structure according to an embodiment of the present application; Figure 6 FIG. 6 is a cross-sectional view of a holding part of a stick body of an ice hockey stick based on a bow-shaped structure according to an embodiment of the present application; FIG. 1 is a structural perspective view of an ice hockey stick based on a bow-shaped structure according to an embodiment of the present application; DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the present application clearer and more apparent, the present application will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0020] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application.

[0021] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0022] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 , which are respectively a structural stereogram of an ice hockey stick with a bow structure according to an embodiment of the present invention, a stereogram of the shaft, a front view of the shaft, a side view of the shaft, a cross-sectional view of the bow portion 2 of the shaft, and a cross-sectional view of the grip portion 1 of the shaft; an ice hockey stick with a bow structure according to an embodiment of the present invention comprises: The shaft is a hollow structure, comprising a straight grip portion 1 and an arch portion 2 connected to the straight grip portion 1, which increases the length involved in rebound and concentrates the deformation range to increase the ball's ejection speed. The arch portion 2 comprises a front arch groove and a back arch groove respectively provided on the front hitting side and the back hitting side. The front arcuate groove and the rear arcuate groove are symmetrically arranged with respect to the extension line of the center line of the straight grip portion as the symmetry axis; The blade 4 is connected to the shaft and comprises a blade core and a blade surface covering the blade core.

[0024] Specifically, the shaft further includes a connecting portion 3 provided between the bow portion and the blade 4 .

[0025] Specifically, the core of the blade 4 is made of PVC foam material, and the surface of the blade 4 is made of a carbon fiber braided layer.

[0026] Please refer to the following initial speed test table of the ball hitting, which has been verified by finite element analysis (ANSYS Workbench) that the structure fatigue life is better than that of the traditional design by 30% in 10,000 ball hitting cycle tests; actual tests show that the use of a club with the arch portion 2 by a professional player can increase the initial speed of ball hitting by 4.9%-12.85%.

[0027] Two groups of hockey sticks with the same rigidity, the same weight and length, and different stick types were selected to set the initial speed comparison test at 20 kg, 25 kg and 30 kg force values, and the results are as follows: Table 1 Initial speed of 20 kg test setting force

[0028] From the data in Table 1, when hitting the ball with a 20 kg hitting force, the first group of arch-shaped sticks increased the speed by 8.5% compared to straight-shaped sticks, the second group of arch-shaped sticks increased the speed by 9.0% compared to straight-shaped sticks, and the average speed increased by 8.75%.

[0029] Table 2 Initial speed of 25 kg test setting force

[0030] From the data in Table 2, when hitting the ball with a 25 kg hitting force, the first group of arch-shaped sticks increased the speed by 11.5% compared to straight-shaped sticks, the second group of arch-shaped sticks increased the speed by 14.2% compared to straight-shaped sticks, and the average speed increased by 12.85%.

[0031] Table 3 Initial speed of 30 kg test setting force From the data in Table 3, when hitting the ball with a 30 kg hitting force, the first group of arch-shaped sticks increased the speed by 5.6% compared to straight-shaped sticks, the second group of arch-shaped sticks increased the speed by 4.2% compared to straight-shaped sticks, and the average speed increased by 4.9%.

[0032] When the player applies pressure to the club (such as pressing the club or swinging), the arch portion 2 will cause the shaft to have greater elastic deformation and store more elastic potential energy. At the moment of hitting the ball, the shaft quickly rebounds to release energy, converting the stored potential energy into kinetic energy of the blade 4, thereby increasing the initial speed of hitting the ball. Similar to archery, the rebound speed of the shaft with the arch portion 2 is much higher than that of the traditional straight shaft, significantly increasing the speed of the blade 4.

[0033] In this embodiment, the shaft with the arch portion 2 can more efficiently transmit the force applied by the player to the blade 4, reducing energy dispersion caused by shaft vibration or distortion, synchronizing the rebound with the swing motion, and ensuring that energy is concentrated and released at the moment of hitting the ball, rather than being dispersed during the swing process.

[0034] The shaft with the arch portion 2 enhances the acceleration of the blade 4, which is specifically manifested as: Leverage effect: the bow 2 changes the force distribution of the shaft, forming a more effective lever system, generating greater blade 4 acceleration when hitting the ball.

[0035] Delayed release design: the bow 2 delays the moment of maximum acceleration of the blade 4, making it closer to the point of impact, avoiding premature peak speed.

[0036] The stress distribution of the bow 2 is: One side depression: withstands compressive stress; the other side depression: withstands tensile stress.

[0037] The stress peak of the shaft with the bow 2 is shifted, i.e. the maximum stress point is shifted from the traditional handle 1 to the middle of the shaft.

[0038] The acceleration peak of the blade 4 is greater than that of the blade of the traditional shaft.

[0039] In implementation, the ice hockey stick described in the present application sets a curved structure on the shaft near the blade 4, the curved surface of the stick is longer than the straight surface under the condition of the same natural length, and after bending, the fibers in the stick are like the fibers in the bow and arrow, combined with the bow surface to make the rebound speed faster; at the same time, by setting the bow 2, the deformation is concentrated in the predetermined area, the energy transfer path is optimized, the energy transfer efficiency is improved, and the energy transfer efficiency of the ice hockey stick is improved; at the same time, the shaft with the bow 2 can more efficiently transfer the force applied by the player to the blade 4, reduce the energy dispersion caused by shaft vibration or distortion, synchronize the rebound with the swing action, and ensure that the energy is concentrated and released at the moment of hitting the ball, rather than dispersed in the swing process; at the same time, the structural fatigue life of the ice hockey stick is improved.

[0040] The embodiment of the application is a kind of ice hockey stick manufacturing method based on bow structure, comprising: Interleaved and hot-pressed carbon fiber yarn sheets of pre-impregnated resin into a rectangular sheet-shaped substrate; Detect the width and duration of the overflow resin at the corresponding overflow position outside the edge of the rectangular sheet-shaped substrate; Determine the hot-pressing state of the hot-pressing area corresponding to each overflow position according to the width and duration of the overflow resin at each overflow position, including the resin flow obstruction state and the extrusion abnormal state; Determine the flow obstruction area in the rectangular sheet-shaped substrate according to the overflow position whose width of the overflow resin meets the preset width condition; Determine the starting laying rectangular edge of the rectangular sheet-shaped substrate on the mandrel according to the length of the flow obstruction area and the volume of the resin overflow from the two advancing rectangular edges of the rectangular sheet-shaped substrate; Gradually lay the rectangular sheet-shaped substrate on the mandrel from the starting laying rectangular edge; The laying rate is determined according to the total length of the overflow positions on two adjacent rectangular edges of two adjacent rectangular sheet-shaped substrates that meet the preset width condition. The deformation difference between the edge position and the core position of the rectangular sheet-shaped substrate on the mandrel during the laying process is obtained. The laying pressure is adjusted according to the deformation difference. The rectangular sheet-shaped substrate is laid on the mandrel in the whole according to the laying pressure to form an unshaped shaft, and the unshaped shaft is sequentially subjected to heating and curing, mandrel extraction, mold pressing and surface treatment to form a shaft. The shaft blade 4 is bonded to the shaft by the carbon cloth to output the ice hockey shaft.

[0041] Preferably, the angle of the staggered superposition of the carbon fiber yarn sheet is preferably ±45°.

[0042] In the implementation, the ice hockey stick manufacturing method of the present application determines the hot pressing state of the hot pressing area corresponding to each overflow position according to the width of the overflow resin, so as to make the resin flow in the narrow rectangular area formed by the texture and the cross line in the rectangular sheet-shaped substrate. The restriction caused by the texture and the cross line may hinder the flow area of the resin after heating. Therefore, when the width of the overflow resin and the flow-restricted area formed by the texture and the cross line is close or small, the resin overflow caused by the hindrance of the internal resin flow is more likely to occur. In addition, the extrusion abnormal state refers to the situation that when the width of the resin overflow is large after excluding the resin overflow, the edge area of the edge of the rectangular sheet-shaped substrate tends to flow outward, resulting in resin outflow, and the distribution of the internal resin is uneven. By determining the starting laying rectangular edge of the rectangular sheet-shaped substrate on the mandrel according to the length of the flow-hindered area and the volume of the resin overflow on the two advancing rectangular edges of the rectangular sheet-shaped substrate, the starting iron laying rectangular edge is accurately determined, and the edge area shortage caused by the overflow resin on the two advancing rectangular edges and the uneven distribution of the internal resin caused by the resin flow area in the internal part of the rectangular sheet-shaped substrate are reduced. Therefore, if the side with a larger overflow volume is laid first during laying, the part with high rigidity may cause the laying position stability to decrease during the subsequent laying process. By determining the laying rate according to the total length of the overflow position meeting the preset width condition on the two adjacent rectangular edges of the adjacent two rectangular sheet-shaped substrates, the resin flow condition may still exist when heated again due to the existence of the resin flow area in the rectangular sheet-shaped substrate. Therefore, by increasing the laying rate to shorten the exposure time of the softened resin after heating, the range and probability of resin migration under pressure are reduced. By adjusting the laying pressure according to the type variation difference, the quality of laying at each position is uneven due to the difference in rigidity consistency between each position on the rectangular sheet-shaped substrate, which causes the deformation degree to differ when subjected to hot pressing, thereby realizing the improvement of the manufacturing precision and quality of the ice hockey stick based on the arc structure.

[0043] Specifically, the hot pressing state of the hot pressing area corresponding to each overflow position is determined according to the width of the overflow resin at each overflow position, including, The width of the overflow resin at each overflow position is compared with the preset first width and the preset second width respectively, and the overflow duration of each overflow position is compared with the preset duration. If the width of the overflow resin is greater than the preset first width and less than the preset second width, and the resin overflow duration of the current overflow position is greater than or equal to the preset second duration, it is determined that the hot-pressing state of the hot-pressing area corresponding to the current overflow position is the resin flow obstruction state. If the width of the overflow resin is greater than or equal to the preset second width, and the resin overflow duration of the current overflow position is greater than the preset first duration and less than the preset second duration, it is determined that the hot-pressing state of the hot-pressing area corresponding to the current overflow position is the extrusion abnormal state.

[0044] Specifically, if the width of the overflow resin is less than or equal to the preset first width, or the resin overflow duration of the current overflow position is less than or equal to the preset first duration, it is determined that the hot-pressing of the hot-pressing area corresponding to the current overflow position meets the requirements.

[0045] Optionally, under the condition that the width of a single rectangular sheet-shaped substrate is 4 mm, the optional range of the preset first width is [0.6 mm, 1 mm], and the optional range of the preset second width is [1.1 mm, 1.5 mm].

[0046] Preferably, the preferred embodiment of the preset first width is 0.8 mm, and the preferred embodiment of the preset second width is 1.2 mm.

[0047] Optionally, under the condition that the resin is a standard epoxy resin, the time period of resin overflow is generally within 15 minutes, the optional range of the preset first duration is [1 min, 2 min], and the optional range of the preset second duration is [3 min, 4 min].

[0048] Preferably, the preferred embodiment of the preset first duration is 1.5 min, and the preferred embodiment of the preset second duration is 3.5 min.

[0049] Specifically, the width of the overflow resin is detected by a laser profiler.

[0050] Specifically, the preset first width is less than the preset second width, and the preset first duration is less than the preset second duration.

[0051] Specifically, the hot-pressing area corresponding to the resin flow obstruction state is determined as the flow obstruction area.

[0052] Specifically, the hot-pressing area corresponding to each overflow position is a rectangular area on the rectangular sheet-shaped substrate corresponding to the overflow width of each overflow position, and the length of the rectangular area is the total length of the overflow resin of each overflow position.

[0053] Specifically, if the flow obstruction area corresponding to the first advancing rectangular edge overlaps with the flow obstruction area corresponding to the second advancing rectangular edge, the second condition advancing rectangular edge is determined as the starting laying rectangular edge according to the first condition that the resin volume overflowing from the first advancing rectangular edge is greater than the resin volume overflowing from the second advancing rectangular edge.

[0054] In implementation, the method of the present application determines the starting laying rectangular edge by the overlapping area of the flow obstruction area and the resin volume overflowing, reduces the influence that the rigidity of the side with larger resin volume is greater than the rigidity of the side with less resin volume if the side with larger resin volume is laid first, and reduces the problem of insufficient elasticity of the arc-shaped part 2 of the ice hockey stick, and further improves the manufacturing accuracy and manufacturing quality of the ice hockey stick based on the arc-shaped structure.

[0055] Specifically, if the total length of the overflow positions satisfying the preset width condition is greater than the preset length, the laying rate is increased, wherein the laying rate is in a positive correlation with the total length of the overflow positions.

[0056] Optionally, under the condition that the length of two adjacent rectangular edges of two adjacent rectangular sheet-shaped substrates is 4 mm, the optional range of the preset length is [1.3 mm, 2 mm].

[0057] Preferably, the preferred embodiment of the preset length is 1.6 mm.

[0058] In implementation, when the value of the total length of the overflow positions satisfying the preset width condition exceeding the preset length is within 0.5 mm, the current laying rate is increased by 1.1 times; when the value of the total length of the overflow positions satisfying the preset width condition exceeding the preset length is more than 0.5 mm, the current laying rate is increased by 0.01 m / min for every 0.02 mm; a specific embodiment is that the current laying rate is 1 m / min, the total length of the overflow positions satisfying the preset width condition is 2 mm, and 2 mm-1.6 mm=0.4 mm<0.5 mm, so the increased laying rate is 1 m / min x 1.1=1.1 m / min.

[0059] Specifically, the deformation difference amount of the edge position and the core position of the rectangular sheet-shaped substrate is the absolute value of the difference between the deformation amount of the edge region and the deformation amount of the non-edge region.

[0060] Specifically, the deformation amount is obtained by a laser profile scanner.

[0061] Specifically, the laying pressure is adjusted according to the deformation difference amount, including, comparing the deformation difference amount with a preset difference amount. if the deformation difference amount is greater than the preset difference amount, then reducing the laying pressure; wherein the laying pressure and the deformation difference amount are in a negative correlation.

[0062] Optionally, the optional range of the preset difference amount is [0.1mm, 0.4mm], and the preferred embodiment of the preset difference amount is 0.2mm.

[0063] In implementation, when the value of the deformation difference amount exceeding the preset difference amount is within 0.1mm, the laying pressure is reduced to 0.9 times of the current laying pressure, and when the value of the deformation difference amount exceeding the preset difference amount is more than 0.1mm, the current laying pressure is reduced by 0.01MPa for each 0.01mm exceeding. In an embodiment, the current laying pressure is 0.1MPa, and the deformation difference amount is 0.32mm, then the reduced laying pressure is 0.1MPa×0.9-(0.32mm-0.2mm-0.1mm) / 0.01mm×0.01MPa=0.09MPa-0.02MPa=0.07MPa.

[0064] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. An ice hockey stick based on a bow structure, characterized in that: include: The shaft is a hollow structure comprising a straight grip portion and an arched portion connected to the straight grip portion for increasing the length involved in rebound and concentrating the deformation range to increase the ball's ejection speed. The arched portion comprises a front arched groove and a back arched groove respectively provided on the front hitting side and the back hitting side. The front arcuate groove and the rear arcuate groove are symmetrically arranged with respect to the extension line of the center line of the straight grip portion as the symmetry axis; The blade is connected to the shaft and comprises a blade core and a blade surface layer covering the blade core.

2. The ice hockey stick based on the bow structure according to claim 1, characterized in that: The shaft further includes a connecting portion disposed between the bow portion and the blade.

3. A method for manufacturing an ice hockey stick with a bow structure, for manufacturing the ice hockey stick with a bow structure according to any one of claims 1-2, characterized in that: include: The carbon fiber yarn sheets pre-impregnated with resin are stacked and hot pressed to form a rectangular sheet substrate; detecting the width and duration of the overflowed resin at the corresponding overflow position outside the edge of the rectangular sheet substrate; Determining the hot pressing state of the hot pressing area corresponding to each overflow position according to the width of the overflowed resin at each overflow position and the duration of the overflow, including a resin flow obstruction state and an extrusion abnormality state; determining a flow obstruction region in the rectangular sheet substrate according to an overflow position where the width of the overflowed resin meets a preset width condition; Determining the starting paving rectangular side of the rectangular sheet substrate on the mandrel according to the length of the flow obstruction area and the volume of resin overflowed from the two advancing rectangular sides of the rectangular sheet substrate; gradually paving the rectangular sheet substrate on the mandrel starting from the starting rectangular side; The paving speed is determined according to the total length of the overflow position on two adjacent rectangular sides of two adjacent rectangular sheet substrates that meet the preset width condition; Obtaining a deformation difference between an edge position and a core position of the rectangular sheet substrate on the mandrel during the paving process; adjusting the paving pressure according to the deformation difference; Laying all of the rectangular sheet-like substrate on the mandrel according to the laying pressure to form an unshaped shaft, and sequentially performing heating and curing, mandrel extraction, mold pressing, and surface treatment on the unshaped shaft to form a shaft; The blade is bonded to the shaft through carbon cloth to output the ice hockey stick.

4. The method for manufacturing an ice hockey stick based on a bow structure according to claim 3, characterized in that: Determine the hot pressing state of the hot pressing area corresponding to each overflow position according to the width of the overflowed resin at each overflow position. include, Comparing the width of the overflowed resin at each overflow position with the preset first width and the preset second width, and comparing the overflow duration at each overflow position with the preset duration; If the width of the overflowing resin is greater than the preset first width and less than the preset second width, and the duration of the resin overflow at the current overflow position is greater than or equal to the preset second duration, then it is determined that the hot pressing state of the hot pressing area corresponding to the current overflow position is the resin flow obstruction state; If the width of the overflowing resin is greater than or equal to the preset second width, and the duration of the resin overflow at the current overflow position is greater than the preset first duration and less than the preset second duration, then the hot pressing state of the hot pressing area corresponding to the current overflow position is determined to be the extrusion abnormality state.

5. The method for manufacturing an ice hockey stick based on a bow structure according to claim 4, characterized in that: The preset first width is smaller than the preset second width; the preset first duration is smaller than the preset second duration.

6. The method for manufacturing an ice hockey stick based on a bow structure according to claim 5, characterized in that: A hot pressing region corresponding to a hot pressing state in which the resin flow is hindered is determined as the flow hindering region.

7. The method for manufacturing an ice hockey stick based on a bow structure according to claim 6, characterized in that: If there is an overlapping area between the flow obstruction area corresponding to the first advancing rectangular edge and the flow obstruction area corresponding to the second advancing rectangular edge, the second conditional advancing rectangular edge is determined as the starting paving rectangular edge based on the fact that the overflowed resin volume of the first conditional advancing rectangular edge is greater than the overflowed resin volume of the second conditional advancing rectangular edge.

8. The method for manufacturing an ice hockey stick based on a bow structure according to claim 7, characterized in that: If the total length of the overflow position that meets the preset width condition is greater than the preset length, the paving rate is increased, wherein the paving rate is positively correlated with the total length of the overflow position.

9. The method for manufacturing an ice hockey stick based on a bow structure according to claim 8, characterized in that: The deformation difference between the edge position and the core position of the rectangular sheet substrate is the absolute value of the difference between the deformation amount of the edge area and the deformation amount of the non-edge area.

10. The method for manufacturing an ice hockey stick based on a bow structure according to claim 9, characterized in that: Adjusting the paving pressure according to the deformation difference includes: Comparing the deformation difference with a preset difference; If the deformation difference is greater than the preset difference, reducing the paving pressure; The paving pressure is negatively correlated with the deformation difference.

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