Hydraulic filter element center joint gluing assembly line

Abstract

The invention relates to the technical field of filter element center joint gluing, in particular to a hydraulic filter element center joint gluing assembly line which comprises a rack and a bearing piece arranged on the rack and further comprises a fixed clamping piece, the fixed clamping piece comprises a fixed block arranged on the bearing piece, and a first deflection block is hinged to the top of the fixed block; the movable clamping piece comprises a sliding block arranged on the bearing piece, and a second deflection block is hinged to the top of the sliding block; pushing pieces are arranged in the fixed block and the sliding block, and abutting pieces are arranged below the pushing pieces. When the abutting piece axially moves, the abutting piece abuts against the pushing piece, so that the pushing piece pushes the first deflection block and the second deflection block and forces the first deflection block and the second deflection block to deflect. The included angle between the first deflection block and the second deflection block is changed through telescopic movement of the pushing piece, gap adjustment of the two free ends of the filter element is achieved, and the final bonding strength of the filter element is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of middle seam gluing of filter elements, and particularly relates to a middle seam gluing production line for hydraulic filter elements. Background Art

[0002] Filter elements are mainly used to separate solid particles in liquids or gases to protect the normal operation of equipment. When the fluid enters the filter element with a filter screen of a certain specification, its impurities are blocked, and the clean fluid flows out through the filter element.

[0003] During the production of hydraulic filter elements, glue injection operations are usually carried out at the joint of the filter element to make the filter element have good integrity and use reliability. However, in actual operation, the glue used for injection at the joint is usually a room temperature curing glue, but this glue has the defect of a long curing period. In addition, before the glue injection operation, it is difficult to effectively fix the filter materials (such as filter paper, filter cloth, etc.) at the joint position of the filter element, which brings many problems to the joint glue injection operation.

[0004] Chinese Patent with application number 202010989949.4 discloses a middle seam hydraulic glue injection tooling for filter elements, including a base; a clamping mechanism, the clamping mechanism includes a plurality of clamping components arranged side by side, each clamping component includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are parallel and opposite to each other; a linear reciprocating movement mechanism, including a driving component and a sliding table, the sliding table can slide relative to the base, the first clamping plate is fixed on the base, the second clamping plate is fixed on the sliding table, and the output end of the driving component can apply a driving force to the second clamping plate, and the driving force forces the second clamping plate to approach the first clamping plate in parallel. After bypassing the filter screen around the first clamping plate and the second clamping plate, the two free ends of the filter screen are placed between the first clamping plate and the second clamping plate, and by driving the second clamping plate to approach the first clamping plate through the driving component, the two free ends of the filter screen can be clamped and fixed, reducing the gap of its connection seam and making its connection tighter.

[0005] Although the foregoing patent technical solution achieves the effect of clamping and fixing the free ends of the filter screen through the coordinated cooperation of the first clamping plate and the second clamping plate, effectively reducing the gap at the connection seam. However, in the actual application scenario, the gap condition between the two free ends of the filter element has a crucial impact on the final bonding strength of the filter element.

[0006] Specifically, when the gap width between the two free ends of the filter element exceeds the reasonable range, a series of adverse consequences will occur. On the one hand, due to the too wide gap, during the bonding process, the amount of glue required will increase significantly. This will not only lead to an increase in material costs, but also the finally formed glue seam will appear unsightly in appearance, affecting the overall quality of the product. On the other hand, the too wide gap provides a large space for the flow of the glue, making it easy for the glue to penetrate into the fixture along the glue seam, resulting in the adhesion phenomenon between the filter element and the fixture.

[0007] Conversely, if the gap width between the two free ends of the filter element is too small, it is difficult for the adhesive to smoothly enter the joint, resulting in insufficient bonding strength at the joint, and further causing the phenomenon of loose joint. This joint defect will increase the bypass risk, that is, the filtered medium may bypass directly through the poorly sealed part around the filtering function of the filter material, thus reducing the filtering effect and affecting the performance of the entire filtering system.

[0008] Therefore, in view of the limitations of the current mid-seam gluing of filter elements, it is particularly urgent and important to develop a mid-seam gluing production line for hydraulic filter elements to promote the development of related technical fields. Summary of the Invention

[0009] The purpose of the present invention is to provide a mid-seam gluing production line for hydraulic filter elements to solve the technical problems proposed in the above background technology.

[0010] To achieve the above purpose, the present invention provides the following technical solutions: A mid-seam gluing production line for hydraulic filter elements includes a frame and a supporting member arranged on the frame. The frame includes upper and lower layers. A gluing device is provided on the upper layer of the frame, and a heating and curing device is provided on the lower layer of the frame; A load-carrying downward device and a load-carrying upward device are respectively provided at both ends of the frame; The supporting member is provided with a clamping part. The lower half area of the clamping part is used to fixedly clamp the filter element, and the upper half area of the clamping part is used to adjust the mid-seam width of the filter element; An adjusting component is provided in the lower half area of the clamping part. The adjusting component is used to adjust the state change of the lower half area of the clamping part in different areas of the frame to realize the adjustment of the mid-seam width of the filter element; When the supporting member moves to the gluing station, the upper half area of the clamping part expands the mid-seam width of the filter element; when the supporting member moves to the heating and curing station, the upper half area of the clamping part reduces the mid-seam width of the filter element.

[0011] Preferably, the clamping part includes: A fixed clamping member, which includes a fixed block arranged on the supporting member, and a first swing block is hinged to the top of the fixed block; A movable clamping member, which includes a sliding block arranged on the supporting member, and a second swing block is hinged to the top of the sliding block.

[0012] Preferably, the fixed block is fixedly connected to the supporting member, and the sliding block is connected to the supporting member with limited sliding; an array of elastic members is provided between the fixed block and the sliding block.

[0013] Preferably, the adjusting component includes: A pushing member, which is arranged inside the fixed block and the sliding block; A thrusting member, which is arranged inside the fixed block and the sliding block and is in contact with the bottom of the pushing member; When the thrusting member axially moves, it thrusts the pushing member, so that the pushing member thrusts the first yawing block and the second yawing block, and forces the first yawing block and the second yawing block to deflect.

[0014] Preferably, the thrusting member includes: A first movable block, which is arranged inside the fixed block and is in limit sliding connection with the fixed block; A second movable block, which is arranged inside the sliding block and is in limit sliding connection with the sliding block; A stepped groove, the first movable block and the second movable block are both provided with stepped grooves, and the pushing member is in contact with the stepped grooves.

[0015] Preferably, the pushing member includes mounting grooves opened on the fixed block and the sliding block, a push rod is arranged in the mounting grooves, an elastic part is arranged between the push rod and the mounting grooves, and one end of the push rod far away from the elastic part is in contact with the stepped grooves.

[0016] Preferably, grooves are provided on the smooth parts of the stepped grooves.

[0017] Preferably, a pressure-receiving block is arranged on the outer side of the supporting member, the pressure-receiving block is fixedly connected with the first movable block, and the pressure-receiving block is in limit sliding connection with the second movable block.

[0018] Preferably, a guiding member is arranged on the frame, and the guiding member is used for extruding the pressure-receiving block.

[0019] Preferably, a pushing part is arranged on the supporting member, the pushing part includes a rocker arm rotatably connected with the supporting member, a pushing block is arranged at the connecting end of the rocker arm and the supporting member, and by rotating the rocker arm, the pushing block pushes the movable clamping member to move towards the fixed clamping member.

[0020] The technical effects and advantages of the present invention: By arranging a fixed clamping member and a movable clamping member, through structures such as a pushing member and a thrusting member, and using the guiding member to extrude the pressure-receiving block, the present invention makes the yawing block deflect, realizing the change of the V-shaped area. When applying glue, the first yawing block and the second yawing block move away from each other, so that the V-shaped area between them expands, which is beneficial to the glue liquid to penetrate into the gap at the free end of the filter element, avoiding glue application problems, ensuring the quality and effect of glue application, and at the same time preventing the glue liquid from adhering to the fixture. When curing, the first yawing block and the second yawing block move closer to each other, so that the V-shaped area between them shrinks, extruding the glue liquid, reducing the glue seam interval, improving the aesthetics, increasing the bonding interval, reducing the bypass phenomenon, and also enabling the bonding of the redundant bending parts, reducing the rejection rate. Description of the Drawings

[0021] Figure 1 Schematic diagram of the main structure of the production line of the present invention; Figure 2 Schematic diagram of the structure of the production line of the present invention from another perspective; Figure 3 Schematic diagram of the operation of the production line of the present invention; Figure 4 Schematic diagram of the structure of the glue application device of the present invention; Figure 5 Schematic diagram of the structure of the load ascending device of the present invention; Figure 6 Schematic diagram of the structure of the heating and curing device of the present invention; Figure 7 Schematic diagram of the structure of the supporting member of the present invention; Figure 8 Schematic diagram of the structure of the pushing member of the present invention; Figure 9 Schematic diagram of the structure of the stepped groove of the present invention; Figure 10 Schematic diagram of the structure of the guiding member of the present invention; Figure 11 Schematic diagram of the first state of the fixed clamping member and the movable clamping member of the present invention; Figure 12 Schematic diagram of the second state of the fixed clamping member and the movable clamping member of the present invention; Figure 13 Schematic diagram of the third state of the fixed clamping member and the movable clamping member of the present invention; Figure 14 Schematic diagram of the structure of the filter element of the present invention.

[0022] Reference signs are: 1, frame; 2, supporting member; 3, fixed clamping member; 301, fixed block; 302, first swing block; 4, movable clamping member; 401, sliding block; 402, second swing block; 5, elastic member; 6, pushing part; 601, crank; 602, pushing block; 7, pushing member; 8, pushing member; 801, first movable block; 802, second movable block; 803, stepped groove; 804, groove; 9, pressed block; 10, guiding member; 11, load descending device; 12, load ascending device; 13, heating and curing device; 14. Gluing device. Detailed implementation mode

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0024] Embodiment 1 Refer to Figures 1 to 14 As shown, the present invention provides a middle seam gluing production line for hydraulic filter elements, including a frame 1. The frame 1 is provided with two layers. A gluing device 14 is arranged on the upper layer of the frame 1, and a heating and curing device 13 is arranged on the lower layer of the frame 1.

[0025] When the middle seam of the filter element is glued, the gluing device 14 coats the glue on the middle seam formed by the docking of the two free ends of the filter element, and then the heating and curing device 13 heats and cures the glue coated on the middle seam of the filter element.

[0026] It should be noted that: the glue coated on the middle seam of the filter element in this application is a heat-curing glue, and the principle of heat curing of the heat-curing glue belongs to the prior art and will not be elaborated here.

[0027] Refer to Figures 1 to 6 As shown, a load-carrying downward device 11 and a load-carrying upward device 12 are respectively arranged at both ends of the frame 1.

[0028] The load-carrying downward device 11 is used to transport the glued filter element from the upper layer of the frame 1 to the lower layer.

[0029] The load-carrying upward device 12 is used to transport the filter element with the glue cured from the lower layer of the frame 1 to the upper layer.

[0030] Refer to Figures 1 to 7 As shown, a supporting member 2 is arranged on the frame 1; a clamping part is arranged on the supporting member 2. The lower half area of the clamping part is used to fixedly clamp the filter element, and the upper half area of the clamping part is used to adjust the width of the middle seam of the filter element.

[0031] The clamping part includes a fixed clamping member 3 fixedly installed on the supporting member 2, and a movable clamping member 4 slidably connected to the supporting member 2 is arranged outside the fixed clamping member 3.

[0032] A flow channel system is arranged on the frame 1, and the supporting member 2 is located inside the flow channel. During use, the flow channel system drives the supporting member 2 to move on the frame 1. The setting of the flow channel system belongs to the prior art and will not be elaborated here.

[0033] The fixed clamping member 3 and the movable clamping member 4 are used to fix the two free ends of the filter element, so as to facilitate subsequent gluing.

[0034] Referring to Figure 7 As shown, a pushing portion 6 is provided on the supporting member 2. The pushing portion 6 includes a rocking handle 601 rotatably connected to the supporting member 2. A pushing block 602 is provided at the connecting end of the rocking handle 601 and the supporting member 2. By rotating the rocking handle 601, the pushing block 602 pushes the movable clamping member 4 towards the fixed clamping member 3.

[0035] The pushing block 602 includes an eccentric cylinder. The rocking handle 601 is connected to the eccentric position of the eccentric cylinder. After rotating the rocking handle 601, the eccentric cylinder pushes against the movable clamping member 4, so that the fixed clamping member 3 and the movable clamping member 4 complete the clamping operation on the filter element.

[0036] Referring to Figures 11 to 13 As shown, an elastic member 5 is provided between the fixed clamping member 3 and the movable clamping member 4; specifically, the elastic member 5 can be a spring or a rubber block.

[0037] After the filter element returns from the lower layer of the rack 1 to the upper layer of the rack 1, rotate the rocking handle 601 in the reverse direction so that the pushing block 602 loses the pushing force on the movable clamping member 4. At this time, under the elastic recovery ability of the elastic member 5, the movable clamping member 4 moves in the direction away from the fixed clamping member 3 to release the clamping on the filter element.

[0038] During use, first place the two free ends of the filter element between the fixed clamping member 3 and the movable clamping member 4, and then rotate the rocking handle 601 to make the fixed clamping member 3 and the movable clamping member 4 complete the clamping and fixing of the free ends of the filter element.

[0039] After the clamping is completed, the filter element moves towards the area of the gluing device 14 under the action of the flow channel system. After the supporting member 2 runs to the lower part of the gluing device 14, the gluing device 14 performs the gluing operation on the filter element. Gluing the middle seam by the gluing device 14 belongs to the prior art and will not be elaborated here.

[0040] After the gluing operation is completed, the filter element is moved to the lower layer of the rack 1 by the load-carrying downward device 11, and the flow channel system on the lower layer of the rack 1 transports the filter element into the heating and curing device 13. The heating and curing device 13 heats the glue liquid by combining an oven and a fan to make it fully cured.

[0041] After the heating and curing is completed, it is moved to the upper layer of the rack 1 by the load-carrying upward device 12.

[0042] Finally, by reversing the pushing portion 6, the clamping of the movable clamping member 4 and the fixed clamping member 3 on the filter element is released, and the filter element can be removed from the supporting member 2.

[0043] It should be noted that in this application, a blocking cylinder, a lifting cylinder, and a sensor are provided at specific positions of the rack 1 to ensure the smooth operation of the filter element gluing work. The installation positions of these three components can be set according to actual needs.

[0044] Embodiment 2 Although the above embodiments ensure the smooth operation of the middle seam gluing operation of the filter element, in actual application, the gap condition at the two free ends of the filter element has a significant impact on the bonding strength. When the gap width exceeds the reasonable range, many adverse effects will occur: too wide a gap will significantly increase the amount of glue required for bonding, not only increasing the material cost, but also making the appearance of the glue seam unattractive and affecting the product quality; at the same time, the too wide gap provides space for the glue to flow, easily causing the glue to penetrate into the fixture, resulting in adhesion between the filter element and the fixture. If the gap is too small, the glue will be difficult to smoothly enter the joint, resulting in insufficient bonding strength at the joint, loose joint, increasing the bypass risk, reducing the filtration effect, and affecting the performance of the entire filtration system. In view of this, based on Embodiment 1, technical improvements are made, and the improved technical solution is as follows: Refer to Figures 1 to 14 As shown, the present invention also provides a middle seam gluing production line for hydraulic filter elements, including a rack 1 and a supporting member 2 arranged on the rack. The supporting member 2 is provided with a clamping portion. The lower half area of the clamping portion is used to fixedly clamp the filter element, and the upper half area of the clamping portion is used to adjust the middle seam width of the filter element; An adjusting member is provided in the lower half area of the clamping portion. The adjusting member is used to adjust the state change of the lower half area of the clamping portion in different areas of the rack to realize the adjustment of the middle seam width of the filter element; When the supporting member 2 moves to the gluing station, the upper half area of the clamping portion expands the middle seam width of the filter element; when the supporting member 2 moves to the heating and curing station, the upper half area of the clamping portion reduces the middle seam width of the filter element.

[0045] Refer to Figures 7 to 13 As shown, the clamping portion includes a fixed clamping member 3, which includes a fixed block 301 arranged on the supporting member 2, and a first swing block 302 is hinged to the top of the fixed block 301; A movable clamping member 4, which includes a sliding block 401 arranged on the supporting member 2, and a second swing block 402 is hinged to the top of the sliding block 401; The fixed block 301 is hinged to the first swing block 302 through a torsion spring, and the hinged manner of the two is preferably a hinge-type hinged manner.

[0046] The sliding block 401 is hinged to the second swing block 402 through a torsion spring, and the hinged manner of the two is preferably a hinge-type hinged manner.

[0047] Refer to Figures 7 to 13 As shown, the adjusting member includes a pushing member 7, which is arranged inside the fixed block 301 and the sliding block 401; The pushing member 8 is arranged inside the fixed block 301 and the sliding block 401 and is in contact with the bottom of the pushing member 7; When the pushing member 8 moves axially, it pushes the pushing member 7, so that the pushing member 7 pushes the first yaw block 302 and the second yaw block 402 and forces them to deflect.

[0048] Refer to Figures 8 to 14 As shown, the pushing member 8 includes a first movable block 801, which is arranged inside the fixed block 301 and is in limit sliding connection with the fixed block 301; A second movable block 802, which is arranged inside the sliding block 401 and is in limit sliding connection with the sliding block 401; A stepped groove 803 is provided on both the first movable block 801 and the second movable block 802, and the pushing member 7 is in contact with the stepped groove 803.

[0049] The stepped groove 803 includes three intervals A, B, and C. When the pushing member 7 is in interval A, the included angle between the fixed block 301 and the first yaw block 302 is the largest; when the pushing member 7 is in interval C, the included angle between the fixed block 301 and the first yaw block 302 is the smallest.

[0050] It should be noted that: a first limit groove for the movement of the first movable block 801 is provided inside the fixed block 301. The length of the first limit groove is greater than the length of the first movable block 801, and the first limit groove communicates with the outside.

[0051] A second limit groove for the movement of the second movable block 802 is provided inside the sliding block 401. The length of the second limit groove is greater than the length of the second movable block 802, and the second limit groove communicates with the outside.

[0052] Refer to Figures 9 to 13 As shown, the pushing member 7 includes a mounting groove provided on the fixed block 301 and the sliding block 401. A push rod is provided in the mounting groove, and an elastic part is provided between the push rod and the mounting groove. One end of the push rod away from the elastic part is in contact with the stepped groove 803.

[0053] Refer to Figure 9 As shown, grooves 804 are provided on the smooth parts of the stepped groove 803.

[0054] The grooves 804 are used to engage with the bottom of the pushing member 7, just like a bolt, so as to realize the position positioning of the first movable block 801 and the second movable block 802 and prevent the moving distance of the first movable block 801 and the second movable block 802 from exceeding the set value.

[0055] Refer to Figures 8 to 10As shown, a pressure-receiving block 9 is provided on the outer side of the supporting member 2. The pressure-receiving block 9 is fixedly connected to the first movable block 801 and is in limiting sliding connection with the second movable block 802.

[0056] A limiting chute is provided inside the pressure-receiving block 9, and a limiting slider connected to the second movable block 802 is provided in the limiting chute (specifically refer to Figure 8 shown).

[0057] Refer to Figure 10 As shown, a guiding member 10 is provided on the frame 1, and the guiding member 10 is used to extrude the pressure-receiving block 9.

[0058] By extruding the two sides of the pressure-receiving block 9 to different degrees, the guiding member 10 enables the first movable block 801 to move inside the fixed block 301 and at the same time enables the second movable block 802 to move inside the sliding block 401; When the guiding member 10 extrudes the side of the pressure-receiving block 9 away from the supporting member 2, the first movable block 801 moves in the direction away from the connection between the fixed block 301 and the supporting member 2.

[0059] When the guiding member 10 extrudes the side of the pressure-receiving block 9 facing the supporting member 2, the first movable block 801 moves in the direction of the connection between the fixed block 301 and the supporting member 2.

[0060] It should be noted that the guiding member 10 in the present application is located at the top of the flow channel, and its setting will not block the operation of the supporting member 2 in the flow channel, but only realizes the extrusion of the pressure-receiving block 9.

[0061] In the present application, the number of the guiding members 10 is set to three, which are respectively located at the glue application station, the inlet of the heating and curing device 13, and the outlet of the heating and curing device 13.

[0062] It should be noted that: the specific shape and size of the guiding member 10 in the present application can be set by oneself to meet the moving distance requirements of the pressure-receiving block 9 at different positions.

[0063] Refer to Figures 11 to 13 As shown, the fixed block 301 is fixedly connected to the supporting member 2, and the sliding block 401 is in limiting sliding connection with the supporting member 2; an elastic member 5 is provided between the fixed block 301 and the sliding block 401 and is distributed in an array.

[0064] Refer to Figure 14 As shown, the filter element has a plurality of triangular bending regions. One side of the triangular bending region is set as the S1 region, and the other side is set as the S2 region; when the filter element does not perform the middle seam glue application operation, the two free ends are in a separated state.

[0065] In the initial state, the pushing member 7 is located in the B region of the stepped groove 803. At this time, the opposite surfaces of the first swing block 302 and the second swing block 402 are V-shaped (specifically refer toFigure 9 With Figure 11 as shown).

[0066] During the operation, the staff place the two free ends of the filter element into the space area defined by the fixed clamping member 3 and the movable clamping member 4. Given that the first swing block 302 and the second swing block 402 are in a V-shaped configuration at this time, this configuration enables the two free ends of the filter element to enter the gap between the fixed block 301 and the sliding block 401 more smoothly when placed. This design effectively avoids the problem that the two free ends of the filter element encounter too much obstruction during the process of entering the clamping mechanism due to the too small gap between the fixed block 301 and the sliding block 401.

[0067] After the placement of the filter element is completed, rotate the pushing part 6 to push against the sliding block 401 so that the fixed block 301 and the sliding block 401 clamp and fix the two free ends of the filter element, making the bottoms of the two free ends of the filter element fit together to prevent the filter element from falling off the clamping member during subsequent processes.

[0068] After the clamping operation of the free ends of the filter element is completed, the flow channel system configured on the frame 1 drives the support member 2 to move towards the working area where the gluing device 14 is located. During this movement, the guiding member 10 preset on the frame 1 exerts an extrusion force on the side of the pressure block 9 facing the support member 2, and this force causes the pressure block 9 to drive the first movable block 801 and the second movable block 802 to displace towards the connection between the fixed block 301 and the support member 2 (taking Figure 9 as an example, at this time the first movable block 801 should displace from right to left).

[0069] As the first movable block 801 and the second movable block 802 move, the push member 7 originally in the stepped groove 803B area gradually migrates towards the C area. Given that the height of the C area of the stepped groove 803 is lower than that of the B area, under the action of the elastic potential energy of the elastic part, one end of the push member 7 in contact with the stepped groove 803 gradually generates a downward displacement. At the same time, the pushing force exerted by the other end of the push member 7 on the swing block also gradually weakens.

[0070] In this case, under the action of the elastic restoring force of the torsion spring, the first swing block 302 deflects towards the direction where the fixed block 301 is located, and the second swing block 402 deflects towards the direction where the sliding block 401 is located. During the deflection process of the first swing block 302 and the second swing block 402, the opposite sides of the two continuously exert a pushing action on the S1 area of the filter element, and this pushing action causes the V-shaped area between the first swing block 302 and the second swing block 402 to gradually expand (specifically as Figure 12 shown).

[0071] When the gluing device 14 performs gluing operations on the middle seam of the filter element, the expansion of the V-shaped area is conducive to the more smooth penetration of the glue into the gap between the two free ends of the filter element. This effectively avoids gluing problems caused by slight deviations in the position where the support member 2 stays, such as the glue being unable to enter the middle seam of the filter element or entering incompletely, thus ensuring the quality and effect of the gluing operation. At the same time, since the fixed block 301 and the sliding block 401 fix the bottoms of the two free ends of the filter element, it is possible to avoid the phenomenon that the glue penetrates through the middle seam and adheres to the fixture due to the expansion of the V-shaped area.

[0072] After the gluing operation is completed, the flow channel system transfers the support member 2 to the load-carrying and descending device 11, and the load-carrying and descending device 11 transfers the support member 2 to the lower layer of the frame 1. The flow channel system on the lower layer of the frame 1 transports the support member 2 to the heating and curing device 13. During this process, the guide member 10 preset at the inlet of the heating and curing device 13 applies an extrusion force to the side of the pressure block 9 away from the support member 2, and this extrusion force causes the pressure block 9 to drive the first movable block 801 and the second movable block 802 to displace away from the connection between the fixed block 301 and the support member 2 ( Figure 9 taking... as an example, at this time, the first movable block 801 should displace from left to right).

[0073] As the first movable block 801 and the second movable block 802 move, the pusher 7 in the C area of the stepped groove 803 gradually migrates towards the A area. Given that the height of the A area of the stepped groove 803 is higher than that of the C area, one end of the pusher 7 in contact with the stepped groove 803 gradually generates an upward displacement. At the same time, the pushing force exerted by the other end of the pusher 7 on the swing block also gradually increases.

[0074] As the pusher 7 pushes the swing block, the first swing block 302 gradually deflects towards the second swing block 402, and the second swing block 402 also gradually deflects towards the first swing block 302. During the deflection process of the first swing block 302 and the second swing block 402, the opposite sides of the two continuously exert a pushing action on the S2 area of the filter element, and this pushing action causes the V-shaped area between the first swing block 302 and the second swing block 402 to gradually shrink.

[0075] The shrinkage of the V-shaped area causes the glue originally in the middle seam to be squeezed, and the squeezing causes the liquid level of the glue in the middle seam to gradually rise. On the one hand, it reduces the finally formed glue seam interval and improves the aesthetics of the filter element finished product; on the other hand, the shrinking V-shaped area significantly increases the depth of the glue in the middle seam, that is, it increases the bonding interval between the two free ends of the filter element and reduces the occurrence of bypass phenomena (specifically as Figure 13 shown).

[0076] Meanwhile, when there are excess bending parts entering between the fixed clamping member 3 and the movable clamping member 4, as the V-shaped area shrinks, part of the glue will enter above the bending parts, so as to form a bond between the multiple bending parts and reduce the generation of waste products.

[0077] It should be noted that when the glue coating device 14 of the present application coats the middle seam of the filter element, some areas at both ends of the filter element do not need to be coated with glue, so as to avoid the glue flowing out from both ends of the middle seam when the glue is extruded, and the subsequent process needs to coat and seal both ends of the filter element, that is, at this time, there is no need to perform the glue coating operation on the areas at both ends of the filter element.

[0078] After completing the heating and curing operation, the runner system transfers the carrier 2 to the carrier lifting device 12, and the carrier lifting device 12 transfers the carrier 2 to the upper layer of the frame 1. When the carrier 2 flows out of the heating and curing device 13, the guiding member 10 preset at the outlet of the heating and curing device 13 applies an extrusion force to the side of the pressing block 9 facing the carrier 2, and this force causes the pressing block 9 to drive the first movable block 801 and the second movable block 802 to displace towards the connection between the fixed block 301 and the carrier 2 ( Figure 9 taking this as an example, at this time, the first movable block 801 should displace from right to left).

[0079] As the first movable block 801 and the second movable block 802 move, the pusher 7 in the A area of the stepped groove 803 gradually migrates to the B area. In view of the fact that the height of the B area of the stepped groove 803 is lower than that of the A area, under the action of the elastic potential energy of the elastic part, one end of the pusher 7 in contact with the stepped groove 803 gradually generates a downward displacement. At the same time, the pushing force exerted by the other end of the pusher 7 on the swing block also gradually weakens.

[0080] In this case, under the action of the elastic restoring force of the torsion spring, the first swing block 302 deflects towards the direction of the fixed block 301, and the second swing block 402 deflects towards the direction of the sliding block 401. During the deflection process of the first swing block 302 and the second swing block 402, a V-shaped area is gradually formed on the opposite side of the two, so as to facilitate the placement of the filter element to be coated with glue in the future.

[0081] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A middle-seam gluing production line for hydraulic filters, comprising a frame (1) and a supporting member (2) arranged on the frame (1), characterized in that: The frame (1) includes upper and lower layers. A glue application device (14) is provided on the upper layer of the frame (1), and a heating and curing device (13) is provided on the lower layer of the frame (1). Carrying-down devices (11) and carrying-up devices (12) are respectively provided at both ends of the frame (1). The supporting member (2) is provided with a clamping portion. The lower half region of the clamping portion is used for fixedly clamping the filter element, and the upper half region of the clamping portion is used for adjusting the width of the middle seam of the filter element. An adjusting member is provided in the lower half region of the clamping portion. The adjusting member is used for adjusting the state change of the lower half region of the clamping portion in different regions of the frame (1) to realize the adjustment of the width of the middle seam of the filter element. When the supporting member (2) moves to the glue application station, the upper half region of the clamping portion widens the width of the middle seam of the filter element; when the supporting member (2) moves to the heating and curing station, the upper half region of the clamping portion narrows the width of the middle seam of the filter element.

2. The middle seam glue coating production line of the hydraulic filter element according to claim 1, wherein: The clamping portion includes: A fixed clamping member (3), which includes a fixed block (301) provided on the supporting member (2). A first swing block (302) is hinged to the top of the fixed block (301). A movable clamping member (4), which includes a sliding block (401) provided on the supporting member (2). A second swing block (402) is hinged to the top of the sliding block (401).

3. The in-seam gluing production line for hydraulic filter elements according to claim 2, characterized in that: The fixed block (301) is fixedly connected to the supporting member (2), and the sliding block (401) is connected to the supporting member (2) with limited sliding; elastic members (5) are arranged in an array between the fixed block (301) and the sliding block (401).

4. The in-seam gluing production line of the hydraulic filter element according to claim 1, wherein: The adjusting member includes: A pushing member (7), which is arranged inside the fixed block (301) and the sliding block (401). A pushing member (8), which is arranged inside the fixed block (301) and the sliding block (401) and is in contact with the bottom of the pushing member (7). When the pushing member (8) axially moves, it pushes the pushing member (7) so that the pushing member (7) pushes the first swing block (302) and the second swing block (402), and forces the first swing block (302) and the second swing block (402) to deflect.

5. The in-seam gluing production line of the hydraulic filter element according to claim 4, characterized in that: The pushing member (8) includes: A first movable block (801), which is arranged inside the fixed block (301) and is connected to the fixed block (301) with limited sliding. A second movable block (802), which is arranged inside the sliding block (401) and is connected to the sliding block (401) with limited sliding. A stepped groove (803). The first movable block (801) and the second movable block (802) are both provided with a stepped groove (803), and the pushing member (7) is in contact with the stepped groove (803).

6. The hydraulic filter element middle seam gluing production line according to claim 5, characterized in that: The pushing member (7) includes an installation groove opened on the fixed block (301) and the sliding block (401). A push rod is arranged in the installation groove. An elastic portion is arranged between the push rod and the installation groove. One end of the push rod away from the elastic portion is in contact with the stepped groove (803).

7. The hydraulic filter element middle seam glue coating production line according to claim 6, characterized in that: Grooves (804) are provided on the smooth portions of the stepped groove (803).

8. The hydraulic filter element middle seam glue coating production line according to claim 5, characterized in that: A pressure-receiving block (9) is provided on the outer side of the supporting member (2). The pressure-receiving block (9) is fixedly connected to the first movable block (801), and the pressure-receiving block (9) is connected to the second movable block (802) in a limited sliding manner.

9. The hydraulic filter element middle seam glue coating production line according to claim 8, wherein: A guiding member (10) is provided on the machine frame (1), and the guiding member (10) is used to extrude the pressure-receiving block (9).

10. The hydraulic filter element middle seam gluing production line according to claim 2, wherein: A pushing portion (6) is provided on the supporting member (2). The pushing portion (6) includes a rocking handle (601) rotatably connected to the supporting member (2). A pushing block (602) is provided at the connecting end of the rocking handle (601) and the supporting member (2). By rotating the rocking handle (601), the pushing block (602) pushes the movable clamping member (4) to move towards the fixed clamping member (3).

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