CN117488485B

CN117488485B - Needling machine for carbon felt

Info

Publication number: CN117488485B
Application number: CN202311511177.3A
Authority: CN
Inventors: 柴昌盛; 杨子元; 李娜; 郝泓霖
Original assignee: Gansu Haoshi Carbon New Materials Co ltd
Current assignee: Gansu Haoshi Carbon New Materials Co ltd
Filing date: 2023-11-14
Publication date: 2024-06-07
Anticipated expiration: 2043-11-14

Abstract

The invention discloses a needling machine for a carbon felt, which comprises a transmission part for transmitting net-shaped carbon fibers along a horizontal direction, a driving part, a first needling part, a second needling part and a control part; the first needling component and the second needling component are arranged above the transmission component and can move repeatedly towards the netlike carbon fibers, and extension lines where the movement directions of the first needling component and the second needling component are located are mutually intersected. The driving part drives the first needling part and the second needling part to perform needling according to the first needling frequency and the second needling frequency respectively, and the control part obtains the needling frequency of the first needling part and the second needling part and obtains the target conveying speed of the transmission part matched with the needling frequency according to the associated information, so that the transmission part is controlled to transmit the carbon fiber net according to the target conveying speed, the conflict between the needling motion of the needles and the wire feeding motion of the transmission part is avoided, and the smoothness of cloth surfaces in the needling process are ensured.

Description

Needling machine for carbon felt

Technical Field

The invention relates to the technical field of carbon fiber net processing, in particular to a needling machine for a carbon felt.

Background

The carbon felt is made of carbon fibers, and in the manufacturing process of the carbon felt, one procedure is to process thicker netlike carbon fibers through a needling machine so as to form thinner netlike carbon fibers, and the purpose is to make the netlike carbon fibers thick through the needling effect of needling needles on the needling machine, so that the carbon felt can be suitable for implementation in various fields.

For example, the patent document (publication number CN 203700714U) in China discloses an apparatus for preparing a pre-oxidized fiber monolith felt, comprising: the device comprises a main motor, a main shaft, an eccentric wheel, a flywheel, a connecting rod, an annular needling plate, a screen stripping plate lifting box, a bottom needle plate lifting box and a net conveying roller, wherein the annular needling machine, an unreeling machine and a tension travelling crane are formed; the tension travelling crane comprises a tension screw rod and a travelling crane tension roller, and the travelling crane tension roller can move left and right along with the rotation of the tension screw rod. The cotton net is overlapped layer by layer through annular needling and tension adjustment and is synthesized through needling entanglement. When the device is used, the net layer to be processed is driven by the net conveying roller to be conveyed below the needling plate, and then needling work is repeatedly carried out up and down by the annular needling plate.

As another example, chinese patent document (publication No. CN 219568236U) discloses a carbon felt forming fiber needling machine with conveyer belt elastic flange mechanism, which comprises a frame, the conveyer trough has been seted up at the middle part of frame terminal surface, the inside of conveyer trough is equipped with product conveying mechanism, the terminal surface of frame and the both sides that lie in the conveyer trough all are equipped with and carry elastic flange mechanism, under the combination constitution between montant, cylinder and flange slat, spring piece and the elastic flange slat, can be according to the clamp fixing of carrying the support otter board of placing different carbon felt article width on the product conveyer belt to improve and carry tight scope and the practicality of clamp to various carbon felt articles.

The utility model discloses a flat-plate compound needling machine again like chinese patent document (publication No. CN 219690022U), including the frame and set up in the headstock on frame top, the headstock includes the box that is fixed in the frame top through elevating system, rotates the faller and the clamp plate that set up in the box and drive respectively and connect in the main shaft, the clamp plate sets up in the faller under, the top of faller pass through eccentric mechanism connect in the main shaft, eccentric mechanism includes the eccentric part that overlaps to locate the main shaft, overlaps the first connecting rod and the pin joint of eccentric part in the connecting seat of first connecting rod, the connecting seat is connected in the top surface of faller, the clamp plate pass through cam mechanism connect in the main shaft, cam mechanism including the cam part that overlaps to locate the main shaft and rotate the second connecting rod that is connected in the cam part, the clamp plate connect in the second connecting rod. The flat plate composite needling machine can completely position the plate blank by the pressing plate before needling by the needle plate and after the needle plate is separated from the plate blank, so that needling quality can be improved.

However, the net feeding motion and the needling motion of the needling machines are independent, and the possibility that the needles interfere with each other and the needling angle is single when the needles vertically penetrate into the filter cloth product, which affects the firmness of the final filter cloth product.

Disclosure of Invention

The invention aims to solve the technical problems that in the prior art, the wire feeding movement and the needling movement of a needling machine are independent, the possibility of interference exists, and the needling angle is single when a needling needle vertically penetrates into a filter cloth product, so that the firmness of the final filter cloth product can be influenced.

To solve the above technical problems, embodiments of the present invention disclose a needling machine for carbon felt, which includes a transmission part for transmitting net-shaped carbon fibers in a horizontal direction, a driving part, a first needling part, a second needling part, and a control part; the first needling component and the second needling component are arranged above the transmission component and can move repeatedly towards the netlike carbon fibers, and extension lines where the movement directions of the first needling component and the second needling component are located are mutually intersected.

The driving component is respectively connected with the first needling component and the second needling component in a transmission way; the first needling frequency of the first needling member and the second needling frequency of the second needling member satisfy a first predetermined ratio, and the needling depth of the first needling member and the needling depth of the second needling member satisfy a second predetermined ratio.

The control part is electrically connected with the driving part and the transmission part, and is provided with needling state condition-transmission speed related information in advance, wherein the needling state condition-transmission speed related information comprises different corresponding relations between first needling frequency and second needling frequency and target transmission speed of the transmission part.

The control part compares the actual first needling frequency and the actual second needling frequency with corresponding frequencies in needling state condition-transmission speed related information to obtain a target transmission speed, and controls the transmission part to transmit the netlike carbon fibers according to the target transmission speed, and the first needling part and the second needling part respectively complete needling according to needling frequencies meeting a first preset proportion and needling depths meeting a second preset proportion.

By adopting the technical scheme, when the needling machine is used, the driving speed of the driving part is set according to the needling requirement of the carbon fiber net, the driving part drives the first needling part and the second needling part to perform needling according to the first needling frequency and the second needling frequency respectively, and the control part obtains the needling frequency of the first needling part and the second needling part and obtains the target conveying speed of the transmission part matched with the first needling part and the second needling part according to the associated information, so that the transmission part is controlled to transmit the carbon fiber net according to the target conveying speed, collision between needling motion of a needling needle and wire feeding motion of the transmission part is avoided, and accordingly, the smoothness and the smoothness of cloth surfaces in the needling process are ensured.

In addition, the extending lines of the first needling component and the second needling component of the needling machine are crossed with each other, the first needling frequency of the first needling component and the second needling frequency of the second needling component meet a first preset proportion, the needling depth of the first needling component and the needling depth of the second needling component meet a second preset proportion, the needling of the first needling component and the second needling component enables a plurality of wire harnesses which are different in quantity, depth and direction and staggered with each other to be formed in the netlike carbon fiber net, friction force among carbon fibers in the carbon fiber net is increased, density and strength of the carbon fiber net are improved, fastness and durability of a carbon felt product are improved, and service life of the carbon felt is prolonged.

The embodiment of the invention also discloses a needling machine for the carbon felt, wherein the first needling component comprises a first driving wheel in transmission connection with the driving component, a first guide piece positioned below the first driving wheel, and a first connecting rod, a first driving piece and a first needle plate which are positioned in the first guide piece and are sequentially connected; one end of the first connecting rod is hinged to the side wall of the first driving wheel, the other end of the first connecting rod is hinged to the first driving part, the first needle plate is located at the lower end of the first driving part, and the first driving part is adapted to the first guiding part and can be linked with the first needle plate to reciprocate along the vertical direction.

The second needling component comprises a second driving wheel in driving connection with the driving component, a second guide piece positioned below the second driving wheel, and a second connecting rod, a second driving piece and a second needle plate which are positioned in the second guide piece and are sequentially connected; one end of the second connecting rod is hinged to the side wall of the second driving wheel, the other end of the second connecting rod is hinged to the second driving part, the second needle plate is located on one side, deviating from the second connecting rod, of the second driving part, and the second driving part is adapted to the second guiding part and can be linked to reciprocate along the direction inclined relative to the vertical direction.

Wherein the needling areas of the first needle board and the second needle board are arranged at intervals along the conveying direction of the conveying component.

By adopting the technical scheme, the driving part drives the first driving wheel and links the first driving part to reciprocate along the height direction, the first needle plate performs needling on the carbon fiber net, when a plurality of needles of the first needle plate penetrate into the carbon fiber net, the thorn hooks on the needles can drive the carbon fibers on the surface and the secondary surface of the carbon fiber net, and the plane direction of the carbon fiber net moves towards the vertical direction of the carbon fiber net, so that the fibers are shifted up and down, and the fibers which are shifted up and down generate certain extrusion on the fiber net, so that the fibers in the fiber net are close to be compressed. When the needles reach a certain depth, the needles start to rise back, and the fibers that are displaced due to the forward distribution of the hooks are separated from the hooks and remain in the web in a vertical state.

And the driving part drives the second driving wheel of the second needling part and links the second driving part to reciprocate along the direction inclined relative to the vertical direction, the second needle plate carries out auxiliary needling on the carbon fiber net, so that the carbon fibers on the upper surface and the secondary surface of the carbon fiber net displace along the direction inclined relative to the vertical direction, a plurality of inclined wire harnesses are formed inside the carbon fiber net, the wire harnesses and the wire harnesses formed by the first needle plate and remained on the carbon fiber net in a vertical state are staggered, the friction force among the carbon fibers in the carbon fiber net is increased, the density and the strength of the carbon fiber net are improved, the fastness and the durability of carbon felt products are further improved, and the service life of the carbon felt is prolonged.

The embodiment of the invention also discloses a needling machine for the carbon felt, and the needling machine further comprises a third driving wheel and a fourth driving wheel which are coaxially arranged.

The rotating shafts of the third driving wheel and the fourth driving wheel are fixedly connected with the output shaft of the driving part. And the third driving wheel is in driving connection with the first driving wheel, and the fourth driving wheel is in driving connection with the second driving wheel.

By adopting the technical scheme, through the third driving wheel and the fourth driving wheel which are coaxially arranged, part of power of the driving part is transmitted to the first driving wheel through the third driving wheel, and then the first needling part is driven to realize needling; the other part of power is transmitted to the second transmission wheel through the fourth transmission wheel, so that the second needling component is driven to realize needling, and the driving force can be distributed according to the requirements of the first needling component and the second needling component only by reasonably designing the transmission ratio between the third transmission wheel and the first transmission wheel and the transmission ratio between the second transmission wheel and the fourth transmission wheel. This structure allows the driving member to drive the first and second needling members simultaneously while avoiding the mutual interference of the movements of the first and second needling members.

The embodiment of the invention also discloses a needling machine for the carbon felt, wherein a first strip-shaped hole extending along the radial direction of the first driving wheel is formed in the side wall of the first driving wheel, and one end of the first connecting rod is hinged and matched in the first strip-shaped hole.

The side wall of the second driving wheel is provided with a second strip-shaped hole extending along the radial direction of the second driving wheel, and one end of the second connecting rod is hinged and matched in the second strip-shaped hole.

And, the periphery side edge in first bar hole and second bar hole all is provided with the scale mark.

By adopting the technical scheme, the first connecting rod can change the mounting position on the first driving wheel through the first strip-shaped hole, and the second connecting rod can change the mounting position on the second driving wheel through the second strip-shaped hole, so that the reciprocating displacement distance of the end parts of the first connecting rod and the second connecting rod is changed, and finally the displacement distance of the first transmission part and the second transmission part in the corresponding guide part is changed, namely the needling depth of the first needle plate and the second needle plate is adjusted. And because the first strip-shaped hole and the second strip-shaped hole extend along the radial direction of the first driving wheel and the second driving wheel respectively, the positions of the first connecting rod and the second connecting rod in the first strip-shaped hole and the second strip-shaped hole are changed, the angular speeds of the end parts of the first connecting rod and the second connecting rod cannot be changed, namely the needling frequency of the first needling component and the second needling component cannot be changed.

In addition, the peripheral side edges of the first strip-shaped hole and the second strip-shaped hole are provided with scale marks, an operator can intuitively read the positions of the end parts of the connecting rods in the corresponding strip-shaped holes, accurately adjust the positions of the connecting rods in the strip-shaped holes according to scales, and more facilitate the operator to adjust the needling depths of the first needling component and the second needling component.

The embodiment of the invention also discloses a needling machine for the carbon felt, wherein the transmission part is a transmission belt extending along the horizontal direction; and the needling machine also comprises a vertical side wall arranged beside the conveying belt and extending along the conveying direction, and a telescopic adjusting rod.

The first driving wheel, the second driving wheel, the third driving wheel and the fourth driving wheel are all arranged on the vertical side wall.

The first driving wheel and the second driving wheel are arranged on one side of the vertical side wall, which is close to the transmission part, and the wheel centers of the first driving wheel and the second driving wheel are positioned on the same horizontal plane, a first adjusting hole is arranged vertically below the wheel center of the first driving wheel, and a second adjusting hole is horizontally and adaptively arranged below the wheel center of the second driving wheel and the first adjusting hole; the first adjusting holes and the second adjusting holes are bar-shaped holes and extend in the vertical direction.

When the first bar-shaped hole is overlapped with the first adjusting hole and the second bar-shaped hole is overlapped with the second adjusting hole as seen along the direction perpendicular to the vertical side wall, two ends of the adjusting rod are detachably connected with one end of the first connecting rod and one end of the second connecting rod respectively so as to correspondingly adjust the positions of the first connecting rod and the second connecting rod in the first bar-shaped hole and the second bar-shaped hole respectively.

By adopting the technical scheme, when the needling depth of the first needling component and the second needling component is adjusted, firstly, the first strip-shaped hole on the first driving wheel is aligned with the first adjusting hole on the vertical side wall, the second strip-shaped hole on the second driving wheel is aligned with the second adjusting hole on the vertical side wall, and then the end parts of the first connecting rod and the second connecting rod are respectively connected through the adjusting rod, so that the needling depth of the second needling component can be synchronously adjusted when the needling depth of the first needling component is adjusted, and the needling is always carried out on the first needling component and the second needling component according to the needling depth of a second preset proportion.

The embodiment of the invention also discloses a needling machine for the carbon felt, wherein the vertical side wall is positioned between the first adjusting hole and the second adjusting hole and is provided with a guide hole extending along the vertical direction, and the adjusting rod is provided with a guide protrusion matched with the guide hole at the corresponding position of the guide hole.

When the two ends of the adjusting rod are detachably connected with one end of the first connecting rod and one end of the second connecting rod respectively, the guide protrusions of the adjusting rod can be slidably matched in the guide holes, so that the adjusting rod always translates along the vertical direction.

By adopting the technical scheme, when the first strip-shaped hole is overlapped with the first adjusting hole and the second strip-shaped hole is overlapped with the second adjusting hole, the guide hole is arranged between the first adjusting hole and the second adjusting hole, so that the adjusting rod is ensured to always translate along the vertical direction when moving, and the needling depths of the first needling part and the second needling part are ensured to be always adjusted according to the second preset proportion.

The embodiment of the invention also discloses a needling machine for the carbon felt, wherein the included angle alpha between the moving direction and the vertical direction of the second needle plate is in the range of 30-60 degrees, and the included angle alpha meets the following formula (1):

Wherein:

alpha is an included angle between the movement direction of the second needle plate and the vertical direction;

L is the vertical translation distance of the adjusting rod;

b is the distance that one end of the second connecting rod moves in the second bar-shaped hole;

gamma is a second predetermined ratio of the needling depth of the first needling member compared to the needling depth of the second needling member.

By adopting the technical scheme, the included angle alpha between the moving direction and the vertical direction of the second needle plate meets the formula (1), so that the second preset proportion of the needling depth of the first needling component to the needling depth of the second needling component can be realized by adjusting the included angle alpha.

The embodiment of the invention also discloses a needling machine for the carbon felt, which further comprises a shell, wherein the first needling component, the second needling component, the driving component and the control component are all arranged in the shell.

Wherein, vertical lateral wall is the lateral wall that the casing is located transmission direction one side, and the wheel center that is located the second drive wheel on the vertical lateral wall corresponds the position and is provided with the arc wall, and the pivot of second drive wheel rotationally sets up in the arc wall, and the lateral wall of second guide rotationally connects on vertical lateral wall, the position that the arc wall corresponds the arc center.

The needling machine further comprises a locking part, wherein the locking part is arranged between the rotating shaft of the second driving wheel and the arc-shaped groove and is used for locking the rotating shaft to slide relative to the arc-shaped groove.

By adopting the technical scheme, the first needling component, the second needling component, the driving component and the control component are all assembled in the shell, so that the components are protected, and impurities generated when the fiber net is needled are prevented from falling on each component as much as possible; noise generated during transmission of all parts during needling can be blocked to a certain extent.

And the second driving wheel is assembled by arranging the arc-shaped groove on the shell, the second guide piece is rotatably arranged in the shell, and the inclination angle of the second guide piece relative to the vertical direction is changed, namely the needling direction of the second needling component is changed by adjusting the position of the second driving wheel in the arc-shaped groove and rotating the second guide piece.

The embodiment of the invention also discloses a needling machine for carbon felt, the needling state condition-transmission speed related information also comprises the needling density of each of the first needle plate and the second needle plate and the needling density of each of the first needle plate and the second needle plate, and the needling density is obtained by the following formula (2):

Wherein V is the target transport speed of the transport component in meters per minute; n ₁ is the planting needle density of the first needle plate, and the unit is one needle per meter; n ₂ is the planting needle density of the second needle plate, and the unit is one needle per meter; n ₁ is the needling frequency of the first needle board in units of needling per minute; n ₂ is the needling frequency of the second needle board in units of needling per minute; d ₁ is the needling density of the first needle board in units of thorns per square centimeter; d ₂ is the needling density of the second needle board in units of thorns per square centimeter.

By adopting the technical scheme, the method and the device can accurately calculate the target transmission speed of the corresponding transmission component under different needling frequencies of the first needling component and the second needling component which are required to be different for different carbon felts through the formula (2), so that the needling of the needling machine to different types of carbon felts is met, and the applicability of the needling machine is improved.

The embodiment of the invention also discloses a needling machine for the carbon felt, wherein the first predetermined ratio of the first needling frequency of the first needling component to the second needling frequency of the second needling component is between 6 and 2: 1.

The second predetermined ratio of the needling depths of the first needling member to the second needling member is in the range of 2 to 1.3:1.

By adopting the technical scheme, the first needling frequency and the needling depth of the first needling component are both greater than the second needling frequency and the needling depth of the second needling component, the plane direction of the carbon fiber net moves towards the vertical direction of the carbon fiber net, the main needling of the carbon fiber net is completed, a large number of wire harnesses in the vertical direction are formed in the carbon fiber net, and the auxiliary needling of the second needling component can form a small number of wire harnesses inclined relative to the vertical direction in the carbon fiber net, so that the entanglement degree among fibers is increased, and the density and strength of the carbon fiber net are improved.

The beneficial effects of the invention are as follows:

In addition, the first needling frequency of the first needling component and the second needling frequency of the second needling component meet a first preset proportion, the needling depth of the first needling component and the needling depth of the second needling component meet a second preset proportion, the needling of the first needling component and the needling depth of the second needling component enable a plurality of wire bundles which are different in quantity, depth and direction and staggered with each other to be formed in the netlike carbon fiber net, friction force among carbon fibers in the carbon fiber net is increased, density and strength of the carbon fiber net are improved, fastness and durability of carbon felt products are improved, and service life of the carbon felt is prolonged.

Drawings

Fig. 1 is a schematic structural view of a needling machine for carbon felt according to an embodiment of the present invention;

Fig. 2 is a schematic structural view of another needling machine for carbon felt according to an embodiment of the present invention;

Fig. 3 is a schematic transmission diagram of a first transmission wheel and a third transmission wheel of a needling machine for carbon felt according to an embodiment of the present invention;

Fig. 4 is a schematic transmission diagram of a second transmission wheel and a fourth transmission wheel of the needling machine for carbon felt according to the embodiment of the present invention;

fig. 5 is a schematic view of a structure of a vertical sidewall of a needling machine for carbon felt according to an embodiment of the present invention;

Fig. 6 is a schematic view of an outer structure of a housing of a needling machine for carbon felt according to an embodiment of the present invention.

Reference numerals illustrate:

10. a needling machine;

110. a transmission member; 111. a transmission belt;

120. A driving part;

130. A first needling member;

131. a first driving wheel; 132. a first link; 133. a first guide; 134. a first transmission member;

135. a first needle plate; 136. a first bar-shaped hole;

140. a second needling member;

141. a second driving wheel; 142. a second link; 143. a second guide; 144. a second transmission member;

145. A second needle plate; 146. A second bar-shaped hole;

150. A third driving wheel; 160. A fourth driving wheel;

170. a housing; 171. a vertical sidewall; 172. a first adjustment hole; 173. a second adjustment hole;

174. A guide hole; 175. an arc-shaped groove; 176. stripping the screen plate;

180. An adjusting lever;

190. a control part;

alpha, the included angle between the movement direction of the second needle plate and the vertical direction.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

In order to solve the technical problems that the wire feeding movement and the needling movement of the needling machine in the prior art are independent, so that interference is possible, the needling angle is single, and the firmness of the final filter cloth product is affected, as shown in fig. 1-4, the embodiment of the present invention discloses a needling machine 10 for carbon felt, wherein the needling machine 10 comprises a transmission part 110 for transmitting the net-shaped carbon fiber in the horizontal direction, a driving part 120, a first needling part 130, a second needling part 140 and a control part 190; the first needling member 130 and the second needling member 140 are both disposed above the transmission member 110 and are both capable of repeatedly moving toward the carbon fiber mesh, and the extension lines of the movement directions of the first needling member 130 and the second needling member 140 are crossed with each other.

Specifically, in the present embodiment, as shown in fig. 1, 2 and 3, the first needling member 130 includes a first driving wheel 131 drivingly connected to the driving member 120, a first guide 133 positioned below the first driving wheel 131, and a first link 132, a first driving member 134 and a first needle plate 135 sequentially connected in the first guide 133; one end of the first connecting rod 132 is hinged on the side wall of the first driving wheel 131, the other end is hinged on the first driving piece 134, the first needle plate 135 is positioned at the lower end of the first driving piece 134, and the first driving piece 134 is adapted to the first guiding piece 133 and can be linked with the first needle plate 135 to reciprocate along the vertical direction.

As shown in fig. 1,2 and 4, the second needling member 140 includes a second driving wheel 141 drivingly connected to the driving member 120, a second guide 143 positioned below the second driving wheel 141, and a second link 142, a second driving member 144 and a second needle plate 145 positioned in the second guide 143 and sequentially connected to each other; one end of the second connecting rod 142 is hinged on the side wall of the second driving wheel 141, the other end is hinged on the second driving member 144, the second needle plate 145 is positioned on one side of the second driving member 144 away from the second connecting rod 142, and the second driving member 144 is adapted to the second guiding member 143 and can be linked to reciprocate the second needle plate 145 along a direction inclined relative to the vertical direction.

Wherein the needled areas of the first needle plate 135 and the second needle plate 145 are arranged at intervals along the conveying direction of the conveying member 110.

Specifically, the driving component 120 drives the first driving wheel 131 and links the first driving part 134 to reciprocate along the height direction, the first needle plate 135 performs needling on the carbon fiber net, when a plurality of needles of the first needle plate 135 penetrate into the carbon fiber net, the hooks on the needles drive the carbon fibers on the surface and the secondary surface of the carbon fiber net, and the plane direction of the carbon fiber net moves to the vertical direction of the carbon fiber net, so that the fibers are shifted up and down, and the fibers shifted up and down generate certain extrusion on the fiber net, so that the fibers in the fiber net are close to each other and compressed. When the needles reach a certain depth, the needles start to rise back, and the fibers that are displaced due to the forward distribution of the hooks are separated from the hooks and remain in the web in a vertical state.

And, the driving part 120 drives the second driving wheel 141 of the second needling part 140 and links the second driving part 144 to reciprocate along the direction inclined relative to the vertical direction, the second needle plate 145 performs auxiliary needling on the carbon fiber web, so that the carbon fibers on the upper surface and the secondary surface of the carbon fiber web displace along the direction inclined to the vertical direction, a plurality of inclined wire bundles are formed inside the carbon fiber web, and the wire bundles are staggered with the wire bundles formed by the first needle plate 135 and left on the carbon fiber web in a vertical state, so that the friction force between the carbon fibers in the carbon fiber web is increased, the density and the strength of the carbon fiber web are improved, the fastness and the durability of carbon felt products are further improved, and the service life of the carbon felt is prolonged.

More specifically, the needling depth refers to the length of the needles that protrude outside the web after they penetrate the web, i.e., the distance that the needles protrude out of the web after they penetrate the web during needling, and is a process parameter that affects the carbon felt product. In the needling process of the fiber web, enough needling depth must be obtained, so that the number of the hooks penetrating into the fiber web can meet the requirements of fiber entanglement and constraint, but the needling depth is moderate, needling force and equipment load are increased too deeply, broken needles can occur, fibers can be damaged, and the strength of a product is weakened. It should be noted that the influence of the needling depth on the performance of the carbon felt is mainly achieved by the following two modes: 1. the change in needling depth causes a change in the number of hooks that act on the web, thereby changing the degree of entanglement and binding between the fibers; 2. the difference in needling depth changes the areal density, basis weight, pore size, porosity, etc. of the web. It can be seen that the needling machine 10 according to the embodiment of the present invention, by providing the first needling member 130 and the second needling member 140, can reduce the needling frequency of the individual needling members and prolong the service life of the needling members on the premise of satisfying the number of the required needling of the fiber web.

Further, as shown in fig. 2, 3 and 4, the embodiment of the present invention further discloses a needling machine 10 for carbon felt, wherein the needling machine 10 further comprises a third transmission wheel 150 and a fourth transmission wheel 160 coaxially arranged.

The rotation shafts of the third transmission wheel 150 and the fourth transmission wheel 160 are fixedly connected with the output shaft of the driving component 120. The third driving wheel 150 is in driving connection with the first driving wheel 131, and the fourth driving wheel 160 is in driving connection with the second driving wheel 141.

Specifically, through the third transmission wheel 150 and the fourth transmission wheel 160 which are coaxially arranged, part of the power of the driving part 120 is transmitted to the first transmission wheel 131 through the third transmission wheel 150, so as to drive the first needling part 130 to realize needling; the other part of power is transmitted to the second transmission wheel 141 through the fourth transmission wheel 160, so that the second needling member 140 is driven to realize needling, and the driving force can be distributed according to the requirements of the first needling member 130 and the second needling member 140 only by reasonably designing the transmission ratio between the third transmission wheel 150 and the first transmission wheel 131 and the transmission ratio between the second transmission wheel 141 and the fourth transmission wheel 160. This structure allows the driving part 120 to realize the driving of the first and second needling members 130 and 140 at the same time, while avoiding the movement of the first and second needling members 130 and 140 from interfering with each other.

More specifically, as shown in fig. 2, in this embodiment, the third driving wheel 150 is connected to the first driving wheel 131, the fourth driving wheel 160 is connected to the second driving wheel 141 through belt driving, and the belt driving connection mode can be used for driving with a larger center-to-center distance between two shafts, so that the space arrangement of the driving wheels is facilitated on the premise of meeting the predetermined transmission ratio required between the driving wheels (that is, when the ratio of the first needling frequency of the first needling member 130 to the second needling frequency of the second needling member 140 is the first predetermined ratio), thereby achieving the purpose of driving the guide member to move along the required direction. In addition, the transmission belt has elasticity, can lighten impact and vibration load, and reduces noise and vibration generated during transmission. In this embodiment, a tensioner is further disposed on the outer side of each driving belt to adjust the tensioning degree of the driving belt, and those skilled in the art may design the driving belt and the tensioner according to actual situations and specific requirements, and this embodiment is not limited specifically.

In another embodiment, the third driving wheel 150 is connected to the first driving wheel 131, the fourth driving wheel 160 is connected to the second driving wheel 141 through a chain transmission, the chain transmission mode can be used for transmission with larger center-to-center distance between two shafts, and the transmission of the chain transmission is more stable, so that transmission according to a predetermined transmission ratio can be ensured, and the first needling frequency of the first needling member 130 and the second needling frequency of the second needling member 140 are always needled according to the first predetermined ratio. It should be noted that, when the position of the two driving wheels in driving connection with each other needs to be adjusted, only the chain links of the chain need to be increased or decreased.

In still another embodiment, on the premise that the transmission ratio of the third transmission wheel 150 to the first transmission wheel 131, the transmission ratio of the fourth transmission wheel 160 to the second transmission wheel 141 respectively meet the preset transmission ratio, power can be transmitted in a tooth transmission mode, that is, the transmission wheels are all gears, the third transmission wheel 150 is meshed with the first transmission wheel 131, and the fourth transmission wheel 160 is meshed with the second transmission wheel 141. It should be noted that the transmission manner between the driving wheels is not limited to the above transmission manners, and those skilled in the art may design according to the actual situation and specific requirements, which is not limited in this embodiment.

Still further, as shown in fig. 2, the embodiment of the present invention further discloses a needling machine 10 for carbon felt, wherein a first bar-shaped hole 136 extending in a radial direction thereof is provided on a sidewall of the first driving wheel 131, and one end of the first link 132 is hinge-fitted into the first bar-shaped hole 136.

And, a second bar-shaped hole 146 extending in a radial direction thereof is formed on a sidewall of the second driving wheel 141, and one end of the second link 142 is hinge-fitted into the second bar-shaped hole 146. It should be noted that, when the needling machine 10 is in operation, one end of the first link 132 is fixed relative to the mounting position in the first bar-shaped hole 136, and one end of the second link 142 is fixed relative to the mounting position in the second bar-shaped hole 146.

Specifically, the peripheral edges of the first and second bar holes 136 and 146 are provided with graduation marks.

More specifically, the first link 132 can change the installation position on the first driving wheel 131 through the first bar-shaped hole 136, and the second link 142 can change the installation position on the second driving wheel 141 through the second bar-shaped hole 146, thereby changing the reciprocating displacement distance of the ends of the first link 132 and the second link 142, and finally changing the displacement distance of the first driving member 134 and the second driving member 144 in the corresponding guide members, that is, adjusting the needling depth of the first needle plate 135 and the second needle plate 145. Also, since the first and second bar holes 136 and 146 extend in the radial direction of the first and second driving wheels 131 and 141, respectively, changing the positions of the first and second links 132 and 142 within the first and second bar holes 136 and 146 does not change the angular velocities of the ends of the first and second links 132 and 142, that is, does not change the needling frequency of the first and second needling members 130 and 140.

In addition, the peripheral edges of the first and second bar holes 136 and 146 are provided with graduation marks, so that an operator can intuitively read the positions of the end portions of the connecting rods in the corresponding bar holes, and accurately adjust the positions of the connecting rods in the bar holes according to graduations, thereby being more convenient for the operator to adjust the needling depths of the first and second needling members 130 and 140.

Further, in the present embodiment, the angle α between the moving direction and the vertical direction of the second needle plate 145 is in the range of 30 ° to 60 °, and the angle α satisfies the following formula (1):

Wherein:

Alpha is the angle between the movement direction of the second needle plate 145 and the vertical direction;

L is the vertical translation distance of the adjustment lever 180;

b is the distance that one end of the second link 142 moves within the second bar-shaped hole 146;

Gamma is a second predetermined ratio of the needling depth of the first needling member 130 compared to the needling depth of the second needling member 140.

Specifically, the angle α between the moving direction and the vertical direction of the second needle plate 145 satisfies the above formula (1), so that the second predetermined ratio of the needling depth of the first needling member 130 to the needling depth of the second needling member 140 can be achieved by adjusting the angle α. For example, when the included angle α between the moving direction of the second needle plate 145 and the vertical direction is 60 °, the vertical translation distance L of the adjustment lever 180, that is, the distance by which the end of the first link 132 moves in the first bar-shaped hole 136 is 4 mm, and the ratio of the needling depth of the first needling member 130 to the needling depth of the second needling member 140, that is, the second predetermined ratio is 1.6, it is calculated by taking into the above formula (1), that the distance by which the end of the second link 142 moves in the second bar-shaped hole 146 is 5 mm.

More specifically, in the present embodiment, the needling depth of the first needling member 130 is greater than the needling depth of the second needling member 140 from deep to shallow to achieve a desired strength without undue damage to the fibers. It should be noted that the longer the fiber, the higher the crimp, the deeper the fiber can be made, whereas the shallower the fiber can be; the fiber net with larger mass per unit area can be needled with deeper depth, otherwise, the fiber net is shallower; the needle penetration depth may be deeper than for a loftier web, and shallower than for a loftier web. The specific needling depth may be 6mm, 7 mm, 8mm or other depths, and those skilled in the art may design the present invention according to the actual situation and specific requirements, and the present embodiment is not limited thereto.

Of course, in another embodiment, the movement directions of the first and second needling members 130 and 140 are inclined in the vertical direction, and the movement directions of the first and second needling members 130 and 140 toward the carbon fiber web are close to each other, so that the first and second needling members 130 and 140 form a plurality of entangled and staggered strands in an "X" shape inside the carbon fiber web to increase the density and strength of the carbon fiber web. In still another embodiment, the movement directions of the first needling member 130 and the second needling member 140 are inclined in the vertical direction, and the movement directions of the first needling member 130 and the second needling member 140 toward the carbon fiber web are far away from each other, and a plurality of bundles entangled and staggered in an "X" shape can be formed in the carbon fiber web, so that those skilled in the art can design according to practical situations and specific requirements, and the embodiment is not limited thereto.

More specifically, in the present embodiment, the driving member 120 is in driving connection with the first needling member 130 and the second needling member 140, respectively; the first needling frequency of the first needling member 130 and the second needling frequency of the second needling member 140 satisfy a first predetermined ratio, and the needling depth of the first needling member 130 and the needling depth of the second needling member 140 satisfy a second predetermined ratio.

More specifically, in the present embodiment, the first predetermined ratio of the first needling frequency of the first needling member 130 to the second needling frequency of the second needling member 140 is between 6 and 2: 1. The first predetermined ratio of the first needling frequency of the first needling member 130 to the second needling frequency of the second needling member 140 may be 6:1, 5.5:1, 4:1, 3.2:1, 2.4:1, 2:1, or any other ratio within the above ratio range, and those skilled in the art may design the ratio according to practical situations and specific requirements, and the embodiment is not limited thereto.

And, the second predetermined ratio of the needling depths of the first needling member 130 and the second needling member 140 is in the range of 2 to 1.3:1. The second predetermined ratio of the needling depths of the first needling member 130 and the second needling member 140 may be 2:1, 1.8:1, 1.7:1, 1.6:1, 1.4:1, 1.3:1 or any other ratio within the above ratio range, and those skilled in the art may design the ratio according to the actual situation and specific requirements, which is not specifically limited in this embodiment.

Specifically, the first needling frequency and needling depth of the first needling member 130 are greater than the second needling frequency and needling depth of the second needling member 140, so that the planar direction of the carbon fiber web moves in the vertical direction of the carbon fiber web to complete the main needling of the carbon fiber web, a large number of vertical wire bundles are formed in the carbon fiber web, and the auxiliary needling of the second needling member 140 forms a small number of wire bundles inclined relative to the vertical direction in the carbon fiber web, thereby increasing the entanglement degree between fibers and improving the density and strength of the carbon fiber web.

Further, as shown in fig. 1, in the present embodiment, the control section 190 is electrically connected to the driving section 120 and the transmission section 110, and the control section 190 presets needling status condition-transmission speed related information including correspondence relationships of different first and second needling frequencies with a target transmission speed of the transmission section 110.

Wherein the control part 190 compares the actual first needling frequency and the second needling frequency with corresponding frequencies in the needling status condition-transmission speed related information to obtain a target transmission speed, and the control part 190 controls the transmission part 110 to transmit the mesh carbon fiber according to the target transmission speed, and the first needling part 130 and the second needling part 140 complete needling according to needling frequencies satisfying a first predetermined ratio and needling depths satisfying a second predetermined ratio, respectively.

Specifically, the needling status condition-conveyance speed related information further includes the needling density of each of the first and second needle plates 135 and 145, and is obtained by the following formula (2):

Where V is the target transport speed of the transport component 110 in meters per minute; n ₁ is the planting needle density of the first needle plate 135, and the unit is one needle per meter; n ₂ is the planting needle density of the second needle plate 145 in units of one per meter; n ₁ is the needling frequency of the first needle board 135 in units of thorns per minute; n ₂ is the needling frequency of the second needle board 145 in units of needling per minute; d ₁ is the needling density of the first needle board 135 in units of thorns per square centimeter; d ₂ is the needling density of the second needle board 145 in units of thorns per square centimeter.

Specifically, the above formula (2) can accurately calculate, for different carbon felts, the required different target transmission speeds of the corresponding transmission components 110 of the first needling component 130 and the second needling component 140 under different needling frequencies, so as to meet the needling of the needling machine 10 on different types of carbon felts, and improve the applicability of the needling machine 10. For example, when the planting needle density N ₁ of the first needle plate 135 is 3000 pieces per meter; the planting needle density N ₂ of the second needle plate 145 is 2000 pieces per meter; the needling frequency n ₁ of the first needle plate 135 is 2000 needling per minute; the needling frequency n ₂ of the second needle board 145 is 1000 needling per minute; the needling density D ₁ of the first needle plate 135 is 300 stitches per square centimeter; the needling density D ₂ of the second needle board 145 is 240 needling per square centimeter. The target conveying speed V of the conveying belt 111 is 1.69 m/min, which is calculated by taking into the above formula (2). It should be noted that if the required fiber raw material, the carbon felt product specification (including density, thickness, pore diameter, porosity, water absorption, air permeability, filterability, etc.), and the needle model are changed, calculation needs to be performed for specific parameters, those skilled in the art can design according to actual situations and specific requirements, and this embodiment is not limited specifically.

More specifically, in the present embodiment, the needling machine 10 further includes a meter display electrically connected to the control unit 190 and an input device (such as a keyboard and a mouse), and in use, an operator may input the first needling frequency of the first needling unit 130 and the second needling frequency of the second needling unit 140 through the input device, or modify other parameters (such as the pointer densities of the first needle board 135 and the second needle board 145, the needling densities, etc.), so that the target conveying speed of the conveying belt 111 is calculated by the control unit 190 and displayed on the meter display.

More specifically, when the needling machine 10 is in use, the driving speed of the driving component 120 is set according to the needling requirement of the carbon fiber web, the driving component 120 drives the first needling component 130 and the second needling component 140 to perform needling according to the first needling frequency and the second needling frequency, and the control component 190 obtains the needling frequencies of the first needling component 130 and the second needling component 140 and obtains the target transportation speed of the transmission component 110 matched with the needling frequencies according to the associated information, so that the transmission component 110 is controlled to transmit the carbon fiber web according to the target transportation speed, collision between the needling motion of the needles and the wire feeding motion of the transmission component 110 is avoided, and the smoothness of the cloth surface in the needling process are ensured.

In addition, the extending lines of the first needling member 130 and the second needling member 140 of the needling machine 10 are intersected with each other, the first needling frequency of the first needling member 130 and the second needling frequency of the second needling member 140 meet a first predetermined proportion, the needling depth of the first needling member 130 and the needling depth of the second needling member 140 meet a second predetermined proportion, and the needling of the first needling member 130 and the second needling member 140 enable a plurality of wire bundles which are different in number, depth and direction and staggered with each other to be formed in the netlike carbon fiber net, so that friction force among carbon fibers in the carbon fiber net is increased, density and strength of the carbon fiber net are improved, fastness and durability of a carbon felt product are improved, and service life of the carbon felt is prolonged.

Still further, as shown in fig. 1 and 5, an embodiment of the present invention also discloses a needling machine 10 for carbon felt, the conveying member 110 being a conveying belt 111 extending in a horizontal direction; and the needling machine 10 also includes vertical sidewalls 171 disposed beside the conveyor belt 111 extending in the conveying direction, and a retractable adjustment bar 180.

Wherein the first, second, third and fourth driving wheels 131, 141, 150, 160 are all disposed on the vertical sidewall 171.

Specifically, the first driving wheel 131 and the second driving wheel 141 are disposed on one side of the vertical sidewall 171 near the transmission component 110, the wheel centers of the first driving wheel 131 and the second driving wheel 141 are located on the same horizontal plane, a first adjusting hole 172 is disposed vertically below the wheel center of the first driving wheel 131, and a second adjusting hole 173 is disposed horizontally and adaptively with the first adjusting hole 172 below the wheel center of the second driving wheel 141; the first adjusting hole 172 and the second adjusting hole 173 are bar-shaped holes and extend along the vertical direction.

More specifically, when the first bar hole 136 coincides with the first adjustment hole 172 and the second bar hole 146 coincides with the second adjustment hole 173 as viewed in a direction perpendicular to the vertical sidewall 171, both ends of the adjustment lever 180 are detachably connected with one end of the first link 132 and one end of the second link 142, respectively, to associatively adjust positions of the first link 132 and the second link 142 within the first bar hole 136 and the second bar hole 146, respectively.

More specifically, in the needling machine 10, when the needling depth of the first and second needling members 130 and 140 is adjusted, first, the first bar-shaped hole 136 of the first driving wheel 131 is aligned with the first adjustment hole 172 of the vertical sidewall 171, the second bar-shaped hole 146 of the second driving wheel 141 is aligned with the second adjustment hole 173 of the vertical sidewall 171, and then the ends of the first and second links 132 and 142 are respectively connected by the adjustment rod 180, so that the needling depth of the second needling member 140 can be synchronously adjusted when the needling depth of the first needling member 130 is adjusted, so that the needling of the first and second needling members 130 and 140 is always performed according to the needling depth of the second predetermined ratio.

Still further, as shown in fig. 5, the embodiment of the present invention further discloses a needling machine 10 for carbon felt, wherein a guide hole 174 extending in a vertical direction is provided on a vertical sidewall 171 between a first adjustment hole 172 and a second adjustment hole 173, and a guide protrusion (not shown) adapted to the guide hole 174 is provided on an adjustment rod 180 at a position corresponding to the guide hole 174.

Specifically, when both ends of the adjustment lever 180 are detachably connected to one end of the first link 132 and one end of the second link 142, respectively, the guide protrusion of the adjustment lever 180 is slidably fitted into the guide hole 174 such that the adjustment lever 180 always translates in the vertical direction.

More specifically, when the first strip-shaped hole 136 is ensured to coincide with the first adjustment hole 172 and the second strip-shaped hole 146 is ensured to coincide with the second adjustment hole 173, the guide hole 174 is provided between the first adjustment hole 172 and the second adjustment hole 173, so that the adjustment rod 180 is ensured to translate in the vertical direction all the time when moving, thereby ensuring that the needling depths of the first needling member 130 and the second needling member 140 are always adjusted in accordance with the second predetermined ratio.

Still further, as shown in fig. 1, an embodiment of the present invention also discloses a needling machine 10 for carbon felt, the needling machine 10 further comprising a housing 170, the first needling member 130, the second needling member 140, the driving member 120, and the control member 190 are all disposed within the housing 170.

As shown in fig. 6, the vertical side wall 171 is a side wall of the housing 170 located at one side of the conveying direction, an arc groove 175 is disposed on the vertical side wall 171 and located at a position corresponding to a center of the second driving wheel 141, a rotating shaft of the second driving wheel 141 is rotatably disposed in the arc groove 175, and an outer side wall of the second guide member 143 is rotatably connected to the vertical side wall 171 and located at a position corresponding to the arc center of the arc groove 175.

Also, the needling machine 10 further includes a locking member (not shown) provided between the rotation shaft of the second driving wheel 141 and the arc-shaped groove 175 for locking the sliding of the rotation shaft with respect to the arc-shaped groove 175. It should be noted that the locking component may be a bolt, a nut, a collar or other locking components commonly used in the art, and those skilled in the art may design the locking component according to the actual situation and specific requirements, which is not limited in this embodiment.

Specifically, the first needling member 130, the second needling member 140, the driving member 120, and the control member 190 are all assembled therein through the housing 170, so that the plurality of members are protected, and foreign substances generated when needling the web are prevented from falling on the respective members as much as possible; noise generated during transmission of all parts during needling can be blocked to a certain extent.

And, the second driving wheel 141 is assembled by providing the arc-shaped groove 175 on the housing 170, and the second guide 143 is rotatably provided in the housing 170, and by adjusting the position of the second driving wheel 141 in the arc-shaped groove 175 and rotating the second guide 143, the inclination angle of the second guide 143 with respect to the vertical direction, that is, the needling direction of the second needling member 140 is changed.

Still further, as shown in fig. 1, the embodiment of the present invention further discloses a needling machine 10 for carbon felt, the needling machine 10 further includes a screen stripping plate 176 disposed below the first needling member 130 and the second needling member 140 and above the conveyor belt 111, for stripping the fiber filaments hanging on the needles when needling, and the specific structure of the screen stripping plate 176 can be designed by those skilled in the art according to the actual situation and specific requirements, and the embodiment is not limited thereto.

The foregoing describes embodiments of the present invention in terms of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The above description will contain numerous specific details in order to provide a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.

The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention with reference to specific embodiments, and it is not intended to limit the practice of the invention to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present invention.

Claims

1. A needling machine for carbon felt, characterized by comprising a transmission part for transmitting net-shaped carbon fibers in a horizontal direction, a driving part, a first needling part, a second needling part and a control part; the first needling component and the second needling component are arranged above the transmission component and can move repeatedly towards the reticular carbon fibers, and extension lines of the movement directions of the first needling component and the second needling component are mutually intersected;

The driving component is respectively in transmission connection with the first needling component and the second needling component; the first needling member includes a first needle plate, the second needling member includes a second needle plate, a first needling frequency of the first needling member and a second needling frequency of the second needling member satisfy a first predetermined ratio, and a needling depth of the first needling member and a needling depth of the second needling member satisfy a second predetermined ratio;

The control part is electrically connected with the driving part and the transmission part, and is preset with needling state condition-transmission speed related information which comprises different corresponding relations between the first needling frequency and the second needling frequency and the target transmission speed of the transmission part; wherein the method comprises the steps of

The control part compares the actual first needling frequency and the second needling frequency with corresponding frequencies in the needling state condition-transmission speed related information to obtain the target transmission speed, and controls the transmission part to transmit the netlike carbon fibers according to the target transmission speed, and the first needling part and the second needling part respectively complete needling according to needling frequencies meeting the first preset proportion and needling depths meeting the second preset proportion;

The needling status condition-conveying speed related information further includes needling densities of the first needle plate and the second needle plate, respectively, and is obtained by the following formula:

Wherein V is the target transport speed of the transport component in meters per minute; n ₁ is the planting needle density of the first needle plate, and the unit is one needle per meter; n ₂ is the planting needle density of the second needle plate, and the unit is one needle per meter; n ₁ is the needling frequency of the first needle board in units of thorns per minute; n ₂ is the needling frequency of the second needle board in units of needling per minute; d ₁ is the needling density of the first needle board in units of thorns per square centimeter; d ₂ is the needling density of the second needle board in units of thorns per square centimeter.

2. The needling machine for carbon felts of claim 1, wherein:

The first needling component comprises a first driving wheel in driving connection with the driving component, a first guide piece positioned below the first driving wheel, and a first connecting rod, a first driving piece and a first needle plate which are positioned in the first guide piece and are sequentially connected; one end of the first connecting rod is hinged to the side wall of the first driving wheel, the other end of the first connecting rod is hinged to the first driving part, the first needle plate is positioned at the lower end of the first driving part, and the first driving part is adapted to the first guiding part and can link the first needle plate to reciprocate along the vertical direction;

The second needling component comprises a second driving wheel in driving connection with the driving component, a second guide piece positioned below the second driving wheel, and a second connecting rod, a second driving piece and a second needle plate which are positioned in the second guide piece and are sequentially connected; one end of the second connecting rod is hinged to the side wall of the second driving wheel, the other end of the second connecting rod is hinged to the second driving part, the second needle plate is positioned on one side of the second driving part, which is away from the second connecting rod, and the second driving part is adapted to the second guiding part and can link the second needle plate to reciprocate along the direction inclined relative to the vertical direction; wherein the method comprises the steps of

The needling areas of the first needle plate and the second needle plate are arranged at intervals along the conveying direction of the conveying component.

3. The needling machine for carbon felts of claim 2, wherein:

The needling machine also comprises a third driving wheel and a fourth driving wheel which are coaxially arranged; wherein the method comprises the steps of

The rotating shafts of the third driving wheel and the fourth driving wheel are fixedly connected with the output shaft of the driving part; and

The third driving wheel is in driving connection with the first driving wheel, and the fourth driving wheel is in driving connection with the second driving wheel.

4. A needling machine for carbon felts according to claim 3, wherein:

The side wall of the first driving wheel is provided with a first strip-shaped hole extending along the radial direction of the first driving wheel, and one end of the first connecting rod is hinged and matched in the first strip-shaped hole;

a second bar-shaped hole extending along the radial direction of the second driving wheel is formed on the side wall of the second driving wheel, and one end of the second connecting rod is hinged and matched in the second bar-shaped hole; and

The periphery side edges of the first strip-shaped hole and the second strip-shaped hole are provided with scale marks.

5. The needling machine for carbon felts according to claim 4, wherein said transport member is a transport belt extending in a horizontal direction; the needling machine further comprises a vertical side wall arranged beside the conveying belt and extending along the conveying direction, and a telescopic adjusting rod; wherein the method comprises the steps of

The first driving wheel, the second driving wheel, the third driving wheel and the fourth driving wheel are all arranged on the vertical side wall;

The first driving wheel and the second driving wheel are arranged on one side of the vertical side wall, close to the transmission part, and the wheel centers of the first driving wheel and the second driving wheel are positioned on the same horizontal plane, a first adjusting hole is formed vertically below the wheel center of the first driving wheel, and a second adjusting hole is formed horizontally and adaptively below the wheel center of the second driving wheel and the first adjusting hole; the first adjusting holes and the second adjusting holes are bar-shaped holes and extend in the vertical direction;

When the first strip-shaped hole coincides with the first adjustment hole and the second strip-shaped hole coincides with the second adjustment hole as seen in a direction perpendicular to the vertical side wall, both ends of the adjustment rod are detachably connected with one end of the first connecting rod and one end of the second connecting rod respectively to associatively adjust positions of the first connecting rod and the second connecting rod in the first strip-shaped hole and the second strip-shaped hole respectively.

6. The needling machine for carbon felts of claim 5, wherein:

the vertical side wall is positioned between the first adjusting hole and the second adjusting hole, a guide hole extending along the vertical direction is formed in the vertical side wall, and a guide protrusion matched with the guide hole is arranged at a position corresponding to the guide hole on the adjusting rod;

When the two ends of the adjusting rod are detachably connected with one end of the first connecting rod and one end of the second connecting rod respectively, the guide protrusion of the adjusting rod is slidably fit into the guide hole, so that the adjusting rod always translates along the vertical direction.

7. The needling machine for carbon felt according to claim 5, wherein the angle α between the moving direction of the second needle plate and the vertical direction is in the range of 30 ° to 60 °, and the angle α satisfies the following formula:

Wherein:

L is the vertical translation distance of the adjusting rod;

8. Needling machine for carbon mats according to any of claims 5-7, characterized in that:

The needling machine further comprises a housing, wherein the first needling component, the second needling component, the driving component and the control component are all arranged in the housing; wherein the method comprises the steps of

The vertical side wall is a side wall of the shell, which is positioned at one side of the transmission direction, an arc-shaped groove is formed in the vertical side wall and positioned at a position corresponding to the center of the second driving wheel, a rotating shaft of the second driving wheel is rotatably arranged in the arc-shaped groove, and the outer side wall of the second guide piece is rotatably connected to the vertical side wall and corresponds to the arc center of the arc-shaped groove;

The needling machine further comprises a locking part, wherein the locking part is arranged between the rotating shaft of the second driving wheel and the arc-shaped groove and used for locking the rotating shaft to slide relative to the arc-shaped groove.

9. The needling machine for carbon felts of claim 1, wherein said first predetermined ratio of said first needling frequency of said first needling member to said second needling frequency of said second needling member is in the range of 6 to 2:1, in the range of 1;