Punching device for punching sponge foaming pipe on vehicle door sealing strip
By designing a mechanized punching device, the expansion assembly and punching assembly are used to automatically cut the sponge foam tube on the door seal strip, solving the problems of low manual cutting efficiency and high cost, and achieving efficient and low-cost cutting effect.
Patent Information
- Application Number
- CN202422104296.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-29
AI Technical Summary
In the prior art, the removal of the excess sponge foam tube on the door seal strip depends on manual operation, which is inefficient and costly, and the quality of the cutout is difficult to guarantee.
A mechanized punching device including a base, a support base, a trigger assembly, an expansion assembly, a first punching assembly and a second punching assembly are designed. The end of the sponge foam tube is stretched through the expansion assembly, and the second punching assembly and the first punching assembly are used to realize automatic cutting, and the coordinated work of each component is controlled in combination with the control unit.
Efficient and low-cost sponge foam tube removal is achieved, ensuring the quality of the incision, simplifying manual operation and improving production efficiency.
Smart Images
Figure CN223071575U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of door seal strip processing devices, and particularly relates to a punching device for punching sponge foam tubes on a vehicle door seal strip. Background Art
[0002] A vehicle door seal strip is a seal fixed at the edge of a vehicle door. When the vehicle door is closed, the vehicle door seal strip is used to seal the gap between the vehicle door and the vehicle frame. After the vehicle door seal strip is produced, the redundant sponge foam tubes at the end of the vehicle door seal strip need to be cut off so that the vehicle door seal strip can fit the contour shape of the vehicle door. Currently, the process of cutting off the redundant sponge foam tubes at the end of the vehicle door seal strip is completed manually, that is, the staff needs to hold a cutter to cut off the redundant part of the sponge foam tube. Therefore, there are the disadvantages of low cutting efficiency and high labor cost. Moreover, since the sponge foam tube is flexible, there are the disadvantages of difficult cutting of the sponge foam tube and difficult guarantee of the cutting quality by manual cutting. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a punching device for punching sponge foam tubes on a vehicle door seal strip, which can realize the cutting of the redundant sponge foam tubes at the end of the vehicle door seal strip in a mechanized manner, thereby having the advantages of high cutting efficiency of the redundant sponge foam tubes and low labor cost.
[0004] The utility model provides a punching device for punching sponge foam tubes on a vehicle door seal strip, including a base, a support seat, a trigger assembly, an expansion assembly, a first punching assembly and a second punching assembly; the support seat is fixed on the base, and a cavity for horizontally inserting and passing through a vehicle door seal strip is arranged on the support seat. The trigger assembly, the expansion assembly and the first punching assembly are all connected to the base, and the second punching assembly is connected to the base and the support seat. The trigger assembly, the expansion assembly, the first punching assembly and the second punching assembly are all connected to a control unit; when the end of the vehicle door seal strip passes through the cavity and triggers the trigger assembly, the expansion end of the expansion assembly is used to insert into the end of the sponge foam tube located on the vehicle door seal strip, and then the second punching assembly and the first punching assembly sequentially punch the sponge foam tube located at the end of the vehicle door seal strip so that the sponge foam tube located at the end of the vehicle door seal strip is separated from the body part of the vehicle door seal strip.
[0005] The utility model can achieve the cutting of the excess sponge foam tube located on the end of the door sealing strip in a mechanized manner, thereby having the advantages of high efficiency in cutting the excess sponge foam tube and low labor cost. In addition, when the utility model cuts the excess sponge foam tube, the expansion component can play a role in opening and supporting the end of the sponge foam tube, thereby facilitating the second punching component and the first punching component to punch the excess sponge foam tube and ensuring the cutting quality of the sponge foam tube.
[0006] In a possible embodiment, the trigger assembly includes a proximity switch, a guide sleeve, a guide rod and a spring; the proximity switch is horizontally fixed on the base, the guide sleeve is horizontally fixed on the base between the support seat and the proximity switch, the guide rod is inserted into the guide sleeve and can move horizontally relative to the guide sleeve, a trigger head with an outer diameter larger than that of the guide rod is provided at one end of the guide rod facing the support seat, the spring sleeve is provided on the outside of the guide rod, two ends of the spring respectively abut against the trigger head and one end of the guide sleeve, a bolt is fixed at one end of the guide rod facing the proximity switch, the bolt is used to abut against the other end of the guide sleeve to prevent the guide rod from detaching from the guide sleeve; when the end of the vehicle sealing strip passes through the cavity and abuts against the trigger head and the vehicle sealing strip When the bolt continues to enter the cavity and pushes the guide rod to move toward one side of the proximity switch, the bolt is used to trigger the proximity switch; by adopting this trigger assembly, when the end of the vehicle sealing strip passes through the cavity and abuts against the trigger head and the vehicle sealing strip continues to be pushed into the cavity and causes the vehicle sealing strip to push the guide rod to move toward one side of the proximity switch, the bolt can trigger the proximity switch, and at this time, the trigger assembly can be triggered by the vehicle sealing strip inserted into the cavity; after the vehicle sealing strip is punched by the punching device and after the vehicle sealing strip is pulled out of the cavity, the spring can push the guide rod to move toward the side close to the support seat to reset, that is, the bolt can release the trigger state of the proximity switch.
[0007] In a possible embodiment, the expansion assembly includes a first cylinder, a first slider and an expansion rod; the first cylinder is fixed on the base, the first slider can be horizontally slidably arranged in the base, one end of the first slider is connected to the driving end of the first cylinder, one end of the expansion rod is fixed to the other end of the first slider, and the other end of the expansion rod forms the expansion end of the expansion assembly; by adopting this expansion assembly, when the first cylinder drives the first slider and the expansion rod to move toward the side close to the support seat, the other end of the expansion rod can be inserted into the end of the sponge foaming tube, at this time, the expansion rod can realize the expansion and support of the end of the sponge foaming tube, and when the first cylinder drives the first slider to move toward the side away from the support seat, the first slider can drive the expansion rod to move and reset.
[0008] In one possible embodiment, the other end of the expansion rod forms a conical head, which is used to cooperate and guide with the inner wall of the end of the sponge foaming tube to facilitate the insertion of the other end of the expansion rod into the end of the sponge foaming tube; by adopting this structure, when the first cylinder drives the first slider and the expansion rod to move toward the side close to the support seat, the conical head can cooperate and guide with the inner wall of the end of the sponge foaming tube to facilitate the insertion of the other end of the expansion rod into the end of the sponge foaming tube.
[0009] In a possible embodiment, the expansion component also includes a baffle, which is fixed on the support seat, and is provided with an opening for the other end of the expansion rod to pass horizontally, and the diameter of the opening is smaller than the outer diameter of the sponge foaming tube; when the first cylinder drives the expansion rod to move and reset via the first slider, the baffle located on the outside of the opening is used to abut against the end of the sponge foaming tube cut from the vehicle sealing strip to peel off the sponge foaming tube waste from the expansion rod; after adopting this structure, when the first cylinder drives the expansion rod to move and reset via the first slider, the baffle located on the outside of the opening can abut against the end of the sponge foaming tube cut from the vehicle sealing strip to peel off the sponge foaming tube waste from the expansion rod, that is, in the process of moving and resetting the expansion rod, the baffle can peel off the sponge foaming tube waste remaining on the expansion rod from the expansion rod, which makes it easy for the sponge foaming tube waste to detach from the expansion rod.
[0010] In a possible embodiment, a waste discharge channel is provided on the base, and the waste discharge channel is used for allowing the sponge foaming tube waste to vertically pass through and be discharged from the punching and cutting device; by adopting this structure, after the sponge foaming tube waste is peeled off from the expansion rod, the sponge foaming tube waste can pass through the waste discharge channel and be discharged from the punching and cutting device, which can facilitate the discharge of the sponge foaming tube waste.
[0011] In a possible embodiment, the second punching assembly includes a second cylinder, a second slider and a first cutter; the second cylinder is vertically fixed on the base, the second slider is vertically slidably connected to the upper end of the support seat, the upper end of the second slider is connected to the driving end of the second cylinder, the first cutter is vertically arranged and the upper end of the first cutter is fixed to the bottom of the second slider, and the lower end of the first cutter is vertically movably penetrated in the support seat; when the second cylinder drives the first cutter to move downward via the second slider, the first cutter is used to cut the sponge foam tube along the cross-sectional direction of the sponge foam tube; after adopting this second punching assembly, when the second cylinder drives the first cutter to move downward via the second slider, the first cutter can cut the sponge foam tube along the cross-sectional direction of the sponge foam tube; when the second cylinder drives the second slider to move upward, the second slider can drive the first cutter to move upward and reset.
[0012] In a possible implementation manner, the second punching component further includes a plurality of guide posts circumferentially and spaced apart from each other. Each guide post extends in the vertical direction. The lower end of each guide post is fixed on the support base, and the upper end of each guide post vertically and movably penetrates through the second slider. After adopting this structure, during the process of the second cylinder driving the second slider to move up and down, the plurality of guide posts can play a guiding role for the second slider to improve the stability and reliability of the second slider during movement.
[0013] In a possible implementation manner, the first punching component includes a third cylinder, a third slider, and a second cutting tool. The third cylinder is horizontally fixed on the base. The third slider is horizontally slidably connected to the base. One end of the third slider is connected to the driving end of the third cylinder. The second cutting tool is fixed on the third slider. When the third cylinder drives the second cutting tool to approach the end of the vehicle sealing strip through the third slider, the second cutting tool is used to cut the vehicle sealing strip between the sponge foam tube and the body part so that the sponge foam tube is separated from the body part of the vehicle sealing strip. After adopting this first punching component, when the third cylinder drives the second cutting tool to approach the end of the vehicle sealing strip through the third slider, the second cutting tool can cut the vehicle sealing strip between the sponge foam tube and the body part so that the sponge foam tube is separated from the body part of the vehicle sealing strip. When the third cylinder drives the third slider to move away from the vehicle sealing strip, the third slider can drive the second cutting tool to move back to its original position. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is the first three-dimensional structural schematic diagram of the present utility model;
[0015] Figure 2 is Figure 1 the enlarged structural schematic diagram at A in
[0016] Figure 3 is the three-dimensional structural schematic diagram of the present utility model after removing the triggering component;
[0017] Figure 4 is Figure 3 the enlarged structural schematic diagram at B in
[0018] Figure 5 is the second three-dimensional structural schematic diagram of the present utility model;
[0019] Figure 6 is Figure 5 the enlarged structural schematic diagram at C in
[0020] Figure 7 is the third three-dimensional structural schematic diagram of the present utility model;
[0021] Figure 8 is Figure 7 the enlarged structural schematic diagram at D in
[0022] Figure 9 It is a schematic three-dimensional structure diagram of a vehicle sealing strip. Specific embodiments
[0023] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.
[0024] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.
[0025] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0026] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0027] See Figures 1-9As shown, the embodiment of the present application discloses a punching device for punching a sponge foaming tube on a door sealing strip, comprising a base 1, a support base 2, a trigger component 3, an expansion component 4, a first punching component 5 and a second punching component 6; the support base 2 is fixed on the base 1, and a cavity 21 for a vehicle sealing strip 7 to be horizontally inserted and passed through is provided on the support base 2, the trigger component 3, the expansion component 4 and the first punching component 5 are all connected to the base 1, and the second punching component 6 is connected to the base 1 and the support base 2, and the trigger component 3, the expansion component 4 and the first punching component 5 are connected to the base 1. The expansion component 4, the first punching component 5 and the second punching component 6 are all connected to the control unit; when the end of the vehicle sealing strip 7 passes through the cavity 21 and triggers the trigger component 3, the expansion end of the expansion component 4 is used to insert into the end of the sponge foaming tube 71 located on the vehicle sealing strip 7, and then the second punching component 6 and the first punching component 5 punch the sponge foaming tube 71 at the end of the vehicle sealing strip 7 in sequence to make the sponge foaming tube 71 at the end of the vehicle sealing strip 7 detach from the main body 72 of the vehicle sealing strip 7.
[0028] When cutting off the excess sponge foam tube on the vehicle door sealing strip, first insert the end of the vehicle sealing strip into the cavity and pass through the cavity. In the process of the vehicle sealing strip being continuously inserted into the cavity, the end of the vehicle sealing strip can eventually trigger the trigger component. At this time, the expansion end of the expansion component can be inserted into the end of the sponge foam tube on the vehicle sealing strip and realize the expansion and support of the end of the sponge foam tube. Then, the second punching component can cut the sponge foam tube along the cross-sectional direction of the sponge foam tube. Then, the first punching component can cut the vehicle sealing strip between the sponge foam tube and the main body to separate the sponge foam tube from the main body of the vehicle sealing strip. Subsequently, the expansion component is reset and takes away the excess sponge foam tube that has been cut off. Finally, the punched vehicle sealing strip can be pulled out of the cavity.
[0029] The trigger assembly 3 includes a proximity switch 31, a guide sleeve 32, a guide rod 33 and a spring 34; the proximity switch 31 is horizontally fixed on the base 1, the guide sleeve 32 is horizontally fixed on the base 1 between the support seat 2 and the proximity switch 31, the guide rod 33 is inserted into the guide sleeve 32 and can move horizontally relative to the guide sleeve 32, a trigger head 331 with an outer diameter larger than that of the guide rod 33 is arranged at one end of the guide rod 33 facing the support seat 2, the spring 34 is sleeved outside the guide rod 33, and the two ends of the spring 34 are respectively abutted against the trigger head 331 and one end of the guide sleeve 32. A bolt 35 is fixed at one end of the guide rod 33 facing the proximity switch 31, and the bolt 35 is used to abut against the other end of the guide sleeve 32 to prevent the guide rod 33 from detaching from the guide sleeve 32; when the end of the vehicle seal strip 7 passes through the cavity 21 and abuts against the trigger head 331, and when the vehicle seal strip 7 continuously enters the cavity 21 and pushes the guide rod 33 to move towards the proximity switch 31, the bolt 35 is used to trigger the proximity switch 31; by adopting such a trigger assembly, when the end of the vehicle seal strip passes through the cavity and abuts against the trigger head, and when the vehicle seal strip is continuously pushed into the cavity and the vehicle seal strip pushes the guide rod to move towards the proximity switch, the bolt can trigger the proximity switch. At this time, the trigger assembly can be triggered by the vehicle seal strip inserted into the cavity; after the vehicle seal strip is punched by the punching device and after the vehicle seal strip is withdrawn from the cavity, the spring can push the guide rod to move and reset towards the side close to the support seat, that is, the bolt can release the triggering state of the proximity switch.
[0030] The expansion assembly 4 includes a first cylinder 41, a first slider 42 and an expansion rod 43; the first cylinder 41 is fixed on the base 1, the first slider 42 is horizontally slidably inserted into the base 1, one end of the first slider 42 is connected to the driving end of the first cylinder 41, and one end of the expansion rod 43 is fixed to the other end of the first slider 42. The other end of the expansion rod 43 forms the expansion end of the expansion assembly 4; by adopting such an expansion assembly, when the first cylinder drives the first slider and the expansion rod to move towards the side close to the support seat, the other end of the expansion rod can be inserted into the end of the sponge foam tube. At this time, the expansion rod can realize the function of expanding and supporting the end of the sponge foam tube. When the first cylinder drives the first slider to move towards the side away from the support seat, the first slider can drive the expansion rod to move and reset.
[0031] The other end of the expansion rod 43 forms a conical head 431, and the conical head 431 is used to cooperate with the inner wall of the end of the sponge foam tube 71 for guiding so as to facilitate the insertion of the other end of the expansion rod 43 into the end of the sponge foam tube 71; by adopting such a structure, when the first cylinder drives the first slider and the expansion rod to move towards the side close to the support seat, the conical head can cooperate with the inner wall of the end of the sponge foam tube for guiding so as to facilitate the insertion of the other end of the expansion rod into the end of the sponge foam tube.
[0032] The expansion assembly 4 also includes a baffle 44, which is fixed on the support seat 2. The baffle 44 is provided with an opening 441 for the other end of the expansion rod 43 to pass horizontally, and the diameter of the opening 441 is smaller than the outer diameter of the sponge foaming tube 71; when the first cylinder 41 drives the expansion rod 43 to move and reset via the first slider 42, the baffle 44 located on the outside of the opening 441 is used to abut against the end of the sponge foaming tube 71 cut from the vehicle sealing strip 7 to peel off the waste sponge foaming tube 71 from the expansion rod 43; after adopting this structure, when the first cylinder drives the expansion rod to move and reset via the first slider, the baffle located on the outside of the opening can abut against the end of the sponge foaming tube cut from the vehicle sealing strip to peel off the waste sponge foaming tube from the expansion rod, that is, in the process of moving and resetting the expansion rod, the baffle can peel off the waste sponge foaming tube remaining on the expansion rod from the expansion rod, which makes it easy for the waste sponge foaming tube to separate from the expansion rod.
[0033] A waste discharge channel 11 is provided on the base 1, and the waste discharge channel 11 is used for allowing the waste of the sponge foaming tube 71 to vertically pass through and be discharged from the punching and cutting device; by adopting this structure, after the waste of the sponge foaming tube is peeled off from the expansion rod, the waste of the sponge foaming tube can pass through the waste discharge channel and be discharged from the punching and cutting device, which can facilitate the discharge of the waste of the sponge foaming tube.
[0034] The second punching assembly 6 includes a second cylinder 61, a second slider 62 and a first cutter 63; the second cylinder 61 is vertically fixed on the base 1, the second slider 62 is vertically slidably connected to the upper end of the support seat 2, the upper end of the second slider 62 is connected to the driving end of the second cylinder 61, the first cutter 63 is vertically arranged and the upper end of the first cutter 63 is fixed to the bottom of the second slider 62, and the lower end of the first cutter 63 is vertically movably penetrated in the support seat 2; when the second cylinder 61 drives the first cutter 63 to move downward via the second slider 62, the first cutter 63 is used to cut the sponge foaming tube 71 along the cross-sectional direction of the sponge foaming tube 71; after adopting this second punching assembly, when the second cylinder drives the first cutter to move downward via the second slider, the first cutter can cut the sponge foaming tube along the cross-sectional direction of the sponge foaming tube; when the second cylinder drives the second slider to move upward, the second slider can drive the first cutter to move upward and reset.
[0035] The second punching assembly 6 also includes a plurality of guide pillars 64 distributed at circumferential intervals, each of which extends in the vertical direction, and the lower end of each guide pillar 64 is fixed on the support seat 2, and the upper end of each guide pillar 64 is vertically movably arranged in the second slider 62; by adopting this structure, when the second cylinder drives the second slider to move up and down, the plurality of guide pillars can guide the second slider to improve the stability and reliability of the second slider during movement.
[0036] The first punching and cutting assembly 5 includes a third cylinder 51, a third slider 52 and a second cutter 53; the third cylinder 51 is horizontally fixed on the base 1, the third slider 52 is horizontally slidably connected to the base 1, one end of the third slider 52 is connected to the driving end of the third cylinder 51, and the second cutter 53 is fixed on the third slider 52; when the third cylinder 51 drives the second cutter 53 to approach the end of the vehicle sealing strip 7 through the third slider 52, the second cutter 53 is used to cut the vehicle sealing strip 7 between the sponge foam tube 71 and the body part 72 so that the sponge foam tube 71 is separated from the body part 72 of the vehicle sealing strip 7; by adopting such a first punching and cutting assembly, when the third cylinder drives the second cutter to approach the end of the vehicle sealing strip through the third slider, the second cutter can cut the vehicle sealing strip between the sponge foam tube and the body part so that the sponge foam tube is separated from the body part of the vehicle sealing strip; when the third cylinder drives the third slider to move away from the vehicle sealing strip, the third slider can drive the second cutter to move back to its original position.
[0037] As mentioned above, the above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A punching device for punching sponge foam tubes on a car door sealing strip, characterized in that: It includes a base (1), a support base (2), a trigger assembly (3), an expansion assembly (4), a first punching and cutting assembly (5) and a second punching and cutting assembly (6); the support base (2) is fixed on the base (1), a cavity (21) for horizontally inserting and passing through a vehicle seal strip (7) is provided on the support base (2), the trigger assembly (3), the expansion assembly (4) and the first punching and cutting assembly (5) are all connected to the base (1), the second punching and cutting assembly (6) is connected to the base (1) and the support base (2), and the trigger assembly (3), the expansion assembly (4), the first punching and cutting assembly (5) and the second punching and cutting assembly (6) are all connected to a control unit; when the end of the vehicle seal strip (7) passes through the cavity (21) and triggers the trigger assembly (3), the expansion end of the expansion assembly (4) is used to insert into the end of a sponge foam tube (71) on the vehicle seal strip (7), and then the second punching and cutting assembly (6) and the first punching and cutting assembly (5) sequentially punch and cut the sponge foam tube (71) at the end of the vehicle seal strip (7) so that the sponge foam tube (71) at the end of the vehicle seal strip (7) is separated from the main body part (72) of the vehicle seal strip (7).
2. The punching device for punching the sponge foam tube on the car door sealing strip according to claim 1, wherein: The trigger assembly (3) includes a proximity switch (31), a guide sleeve (32), a guide rod (33) and a spring (34); the proximity switch (31) is horizontally fixed on the base (1), the guide sleeve (32) is horizontally fixed on the base (1) between the support base (2) and the proximity switch (31), the guide rod (33) is inserted into the guide sleeve (32) and can move horizontally relative to the guide sleeve (32), a trigger head (331) with an outer diameter larger than that of the guide rod (33) is provided at one end of the guide rod (33) facing the support base (2), the spring (34) is sleeved outside the guide rod (33), and the two ends of the spring (34) are respectively abutted against the trigger head (331) and one end of the guide sleeve (32), a bolt (35) is fixed at one end of the guide rod (33) facing the proximity switch (31), and the bolt (35) is used to abut against the other end of the guide sleeve (32) to prevent the guide rod (33) from disengaging from the guide sleeve (32); when the end of the vehicle seal strip (7) passes through the cavity (21) and abuts against the trigger head (331) and the vehicle seal strip (7) continuously enters the cavity (21) and pushes the guide rod (33) to move towards the proximity switch (31), the bolt (35) is used to trigger the proximity switch (31).
3. The punching device for punching the sponge foam tube on the car door sealing strip according to claim 1 or 2, characterized in that: The expansion assembly (4) includes a first cylinder (41), a first slider (42) and an expansion rod (43); the first cylinder (41) is fixed on the base (1), the first slider (42) is horizontally slidably inserted into the base (1), one end of the first slider (42) is connected to the driving end of the first cylinder (41), one end of the expansion rod (43) is fixed to the other end of the first slider (42), and the other end of the expansion rod (43) forms the expansion end of the expansion assembly (4).
4. The punching device for punching the sponge foam tube on the car door sealing strip according to claim 3, characterized in that: The other end of the expansion rod (43) forms a tapered head (431), and the tapered head (431) is used to cooperate with the inner wall of the end of the sponge foam tube (71) for guiding so that the other end of the expansion rod (43) can be inserted into the end of the sponge foam tube (71).
5. The punching device for punching the sponge foam tube on the car door sealing strip according to claim 3, wherein: The expansion assembly (4) further includes a baffle (44), the baffle (44) is fixed on the support base (2), and an opening (441) for the other end of the expansion rod (43) to horizontally pass through is provided on the baffle (44), and the diameter of the opening (441) is smaller than the outer diameter of the sponge foam tube (71); when the first cylinder (41) drives the expansion rod (43) to move and reset through the first slider (42), the baffle (44) located outside the opening (441) is used to abut against the end of the sponge foam tube (71) cut from the vehicle sealing strip (7) to strip the waste of the sponge foam tube (71) from the expansion rod (43).
6. The punching device for punching the sponge foam tube on the car door sealing strip according to claim 5, wherein: A waste discharge channel (11) is provided on the base (1), and the waste discharge channel (11) is used for the waste of the sponge foam tube (71) to vertically pass through and discharge from the punching device.
7. The punching device for punching the sponge foam tube on the car door sealing strip according to claim 1 or 2 or 4 or 5 or 6, characterized in that: The second punching assembly (6) includes a second cylinder (61), a second slider (62) and a first cutter (63); the second cylinder (61) is vertically fixed on the base (1), the second slider (62) is vertically slidably connected to the upper end of the support base (2), the upper end of the second slider (62) is connected to the driving end of the second cylinder (61), the first cutter (63) is vertically arranged and the upper end of the first cutter (63) is fixed to the bottom of the second slider (62), and the lower end of the first cutter (63) vertically passes through the support base (2) movably; when the second cylinder (61) drives the first cutter (63) to move downward through the second slider (62), the first cutter (63) is used to cut the sponge foam tube (71) along the cross-sectional direction of the sponge foam tube (71).
8. The punching device for punching the sponge foam tube on the car door sealing strip according to claim 7, wherein: The second punching assembly (6) further includes a plurality of guide posts (64) circumferentially and spaced apart from each other, each guide post (64) extends in the vertical direction, the lower end of each guide post (64) is fixed on the support base (2), and the upper end of each guide post (64) vertically passes through the second slider (62) movably.
9. The punching device for punching the sponge foam tube on the car door sealing strip according to claim 1 or 2 or 4 or 5 or 6, characterized in that: The first punching and cutting assembly (5) includes a third cylinder (51), a third slider (52) and a second cutting tool (53); the third cylinder (51) is horizontally fixed on the base (1), the third slider (52) is horizontally slidably connected to the base (1), one end of the third slider (52) is connected to the driving end of the third cylinder (51), and the second cutting tool (53) is fixed on the third slider (52); when the third cylinder (51) drives the second cutting tool (53) to approach the end of the vehicle sealing strip (7) through the third slider (52), the second cutting tool (53) is used to cut the vehicle sealing strip (7) between the sponge foam tube (71) and the body part (72) so that the sponge foam tube (71) is separated from the body part (72) of the vehicle sealing strip (7).